Journal of hazardous materials advances最新文献

{"title":"Covalent organic polymers based on special dithioureas for efficient removal of Hg2+ from aqueous solutions","authors":"Haishan Zhu,&nbsp;Ye Tao,&nbsp;Cailing Ni,&nbsp;Yanqing Chen,&nbsp;Hualin Jiang,&nbsp;Yuancheng Qin","doi":"10.1016/j.hazadv.2024.100422","DOIUrl":"https://doi.org/10.1016/j.hazadv.2024.100422","url":null,"abstract":"<div><p>The damage caused by mercury ions (Hg²⁺) to human beings motivates the development of highly efficient technologies for the removal of Hg²⁺ from water. Here, based on the coordination theory between functional groups and Hg²⁺, two covalent organic polymers (COPs) materials were successfully prepared by a more environmentally friendly Michael addition elimination reaction, and the thiourea structure, which has a particularly strong affinity for Hg²⁺, was successfully introduced into the material framework. The introduction of the special dithiourea structure created a rich environment of S and N atoms within the COPs structure, which exhibited high adsorption performance for Hg²⁺. Adsorption experiments showed that the dithiourea-functionalized COPs exhibited high adsorption capacities for Hg²⁺, with the maximum adsorption capacities of 840.9 and 880 mg <em>g</em>⁻¹ for the two materials, respectively. The adsorption performance remained relatively good after four adsorption-desorption cycles, and the adsorption selectivity for Hg²⁺ was intense. Mechanistic studies by X-ray photoelectron spectroscopy and density flooding theory calculations suggest that it is the S atoms within the structure that chelate with the Hg²⁺ and contribute to the adsorption capacity of the Hg²⁺. Therefore, this study provides a new strategy for the development of COP adsorbents for efficient removal of Hg²⁺ in aqueous solutions during remediation activities.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000238/pdfft?md5=7fcf610c288aeb8077e068e93b5bd6e4&pid=1-s2.0-S2772416624000238-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140321136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigating pharmaceuticals and personal care products in Musi River: A exploratory study in Hyderabad, India","authors":"Satyanand Konda ,&nbsp;Narendra Kumar Nagendla ,&nbsp;Mike Williams ,&nbsp;Mohana Krishna Reddy Mudiam","doi":"10.1016/j.hazadv.2024.100420","DOIUrl":"https://doi.org/10.1016/j.hazadv.2024.100420","url":null,"abstract":"<div><p>This study investigated the presence of 46 pharmaceuticals and personal care products (PPCPs), including antibiotics, anti-inflammatory, antifungal, surfactant, antidepressants, and anticonvulsants, in wastewater samples collected from 11 sites along the Musi River in Hyderabad, India. These samples were obtained from diverse points along the river, representing urban, industrial, and hospital-related sources. This strategic selection ensures a comprehensive assessment of water quality, covering areas of varying population density and industrial activity. The samples were extracted for PPCPs using solid-phase extraction and quantified using ultra-performance liquid chromatography-tandem mass spectrometry in multiple reaction mode. Of the 46, 16 target analytes were detected at concentrations ranging from 0.01 ± 0.001 μg/L (for fluoxetine) to 19.295 ± 4.16 μg/L (for ciprofloxacin). An ecological risk assessment was conducted in terms of risk quotient (RQ) for acute and chronic effects for three trophic levels of aquatic organisms (algae, fish, and invertebrates) for each detected contaminant at every site. In the case of acute toxicity, high RQ values (&gt;&gt;1) were obtained for the antibiotics, naproxen, diclofenac, caffeine, fluconazole, propyl paraben, fluoxetine, and benzalkonium chloride C-12. In the case of chronic toxicity, high RQ values (&gt;&gt;1) were estimated for some of the commonly used PPCPs. This study aimed to investigate the contamination levels of PPCPs in various wastewater discharge points along the Musi River in Hyderabad, a densely populated urban center with a population density of up to 45,000/sq km. Additionally, the research conducted an ecotoxicological risk assessment to evaluate the risk posed by these pollutants to three trophic levels (algae, fish, and invertebrates) using RQ analysis. Notably, this study represents the first attempt to conduct such an assessment in this region, providing valuable insights into environmental health and pollution management.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000214/pdfft?md5=ad5ae840b6c3cc9b92478708037f5b7f&pid=1-s2.0-S2772416624000214-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140321188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exposure of polychlorinated biphenyls via indoor dust particles and their health risks in Dhaka City, Bangladesh","authors":"Md Rayhanul Islam Rayhan ,&nbsp;Md Ahedul Akbor ,&nbsp;Aynun Nahar ,&nbsp;Nushrat Jahan Chowdhury ,&nbsp;Md. Mostafizur Rahman ,&nbsp;A H M Saadat","doi":"10.1016/j.hazadv.2024.100421","DOIUrl":"https://doi.org/10.1016/j.hazadv.2024.100421","url":null,"abstract":"<div><p>This study is a pioneer evaluation of Polychlorinated Biphenyls (PCBs) within the indoor environment of the megacity Dhaka, Bangladesh. It assessed the occurrence, distribution and associated human health risks of selected 6 PCB congeners in four types of buildings (commercial, industrial, institutional, and residential). Dust samples were collected from the air conditioner filters and subsequently analyzed by Gas Chromatography- Electron Capture Detector (GC-ECD). ∑6 PCB concentrations in commercial, industrial, institutional, and residential buildings ranged from 168 ± 59.42 to 3419 ± 1307, 590 ± 217 to 4669 ± 1731, 244 ± 89.08 to 2538 ± 779, and 161 ± 60.54 to 5413 ± 2136 ng/g, respectively. Considering the total PCB loads from each building type, the industrial category revealed the maximum concentration (19176 ± 1141 ng/g), followed by commercial, residential, and institutional, meaning industrial buildings are more susceptible to PCBs exposure. The heavy PCBs (hexa- and hepta-CBs) were dominant over the light PCBs (di-, tri-, and tetra-CBs). All hazard index (HI) values, except PCB-180, were below 1, suggesting a lower risk of non-carcinogenic effect. The incremental lifetime cancer risk (CR) values were below 10⁻⁰³, indicating no high carcinogenic risk of the human population from PCB-contaminated dust through the exposure routes.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000226/pdfft?md5=bb592b71c3a323a6e3c1b230b572070e&pid=1-s2.0-S2772416624000226-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140190829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tackling the dust-microplastic nexus: Sources, fate, and detection","authors":"Haitham Elnakar ,&nbsp;Usman M. Ismail ,&nbsp;Muhammad Faizan Khan ,&nbsp;Sally Alnaimat","doi":"10.1016/j.hazadv.2024.100418","DOIUrl":"10.1016/j.hazadv.2024.100418","url":null,"abstract":"<div><p>Dust storms, increasingly prevalent due to anthropogenic climate change, pose a significant environmental hazard by facilitating the long-range transport of contaminants, including ubiquitous microplastics (MPs). These plastic particles, originating from diverse sources such as road dust and landfills, readily adsorb and transport other harmful substances during storm events, potentially amplifying their environmental and health impacts. This comprehensive review critically examines the multifaceted sources and exposure pathways of dust-associated MPs, elucidating their crucial role as vectors for pollutant dispersal. While preliminary studies on cell lines suggest potential carcinogenic effects, robust evidence linking MP exposure to cancer development in humans remains limited. Further research is essential to fully comprehend the long-term health implications of these ubiquitous contaminants. Recognizing the analytical challenges posed by the ubiquity and complex nature of MPs, the review meticulously evaluates current detection techniques in various environmental matrices, highlighting both advancements and limitations. While Fourier-Transform Infrared Spectroscopy (FTIR) emerges as the preeminent tool for its broad applicability and operational ease, alternative approaches like Laser Direct Infrared Imaging (LDIR), Raman micro-spectrometry, and niche techniques such as thermogravimetric analyzers coupled with mass spectrometers (TGA-MS) and hot needle tests demonstrate potential for specific applications. By comprehensively revealing the alarming rise of dust-associated MPs and the intricate complexities of their detection, this review aims to stimulate the development of effective mitigation strategies and inform further research into their multifaceted environmental and health consequences.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000196/pdfft?md5=b1cae2ab61c0397b1fab06fdd45af4e3&pid=1-s2.0-S2772416624000196-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140088994","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Emerging iron based porous metallopolymeric material with cross-linked networks for the separation of ultra-trace arsenic from aqueous environment and simulation with artificial neural network","authors":"Vipin C. Joshi ,&nbsp;Anil R. Gupta ,&nbsp;Manikavasagam Karthik ,&nbsp;Saroj Sharma","doi":"10.1016/j.hazadv.2024.100417","DOIUrl":"https://doi.org/10.1016/j.hazadv.2024.100417","url":null,"abstract":"<div><p>Numerous health problems caused by the aquatic environment's extreme arsenic poisoning influence millions of people, and in the case of prolong indigestion of arsenic containing drinking water, can be potentially fatal. Herein, a new porous polymeric network knitted with integrated iron moiety i.e., poly(ferric tri methacrylate) (pFeM) is fabricated via the suspension polymerization technique. The relative reactants i.e., monomer, crosslinker, and porogen were varied to get a highly efficient pFeM adsorbent for arsenic. The prepared pFeM revealed a significant affinity for arsenic owing to a cohesive iron moiety in the polymeric chain. The prepared adsorbent was characterized by instrumental techniques such as, SEM, XRD, FTIR, BET, and XPS. The pFeM has exhibited high adsorption capacities (q_{e max exp}) of 41.39 mg g⁻¹ for As(V) and 37.35 mg g⁻¹ for As(III), which is close to the adsorption capacities (q_{e max theo}) of 45.10 mg g⁻¹ for As(V) and 40.88 mg g⁻¹ for As(III) achieved by Langmuir adsorption model. The high adsorption capacities of pFeM might be owing to its unique architecture of integrated iron with porous texture surface area (SA: 197 m² g⁻¹) and porosity (Pore size: 0.93–2.36 µm). The pFeM exhibited high arsenic adsorption capacity (&gt;94 % for both forms of arsenic) in the neutral water pH range of 6.0 to 8.0. The phosphate (PO₄³⁻), and bicarbonate (HCO₃⁻) ions negatively affect the adsorption of arsenic, as demonstrated by the effect of interfering ions in water. The pseudo-second-order kinetic model is best fitted with a high correlation coefficient (R²) of 0.9918 and 0.9789 for As(V) and As(III), respectively. The artificial neural network (ANN) was trained and validated using a three-layer back propagation network with the ideal structure of 4–10–1. The values of correlation coefficients (<em>R</em> &gt; 0.99) reveal the high accuracy of the ANN model.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000184/pdfft?md5=f6908ab27e93f771649b37867e86f8e8&pid=1-s2.0-S2772416624000184-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140014511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sampling, separation, and characterization methodology for quantification of microplastic from the environment","authors":"Prabhakar Sharma ,&nbsp;Prateek Sharma ,&nbsp;Kumar Abhishek","doi":"10.1016/j.hazadv.2024.100416","DOIUrl":"https://doi.org/10.1016/j.hazadv.2024.100416","url":null,"abstract":"<div><p>As millions of tonnes of plastics wind up in the environment, plastic pollution is a severe issue that worsens with time. In addition to primary plastic particles, large plastic items are fragmented due to ultraviolet radiation, degradation, and other environmental causes, resulting in minuscule compounds, known as microplastics or nanoplastics. They adsorb hazardous contaminants or easily get absorbed by organisms, for example, polychlorinated biphenyls, polycyclic aromatic hydrocarbons, or heavy metals get adhered to microplastic surfaces due to their tiny size and large surface area. Studies on their toxicity and environmental fate are crucial in light of these challenges, but their effectiveness depends on sampling procedure, sample preparation, characterization, analysis, and quantification techniques. The standard methods for the characterization of microplastics are performed using Fourier transform infrared resonance, Raman Spectroscopy, and pyrolysis Gas Chromatography Mass Spectrometry. Unfortunately, none of these techniques can achieve <em>in-situ</em> non-invasive characterization. These processes are complex, non-uniform across the studies, and different for specific sampling domains such as soil/sediment, surface water or groundwater, biota, and atmosphere. Thus, the current study highlights a specific methodology being used for sampling, sample preparation, characterization, and analysis from solid, aqueous, air, or biota samples. This review paper also specifies the characterization tool and quantification of microplastic concentration and types in the different environmental samples. Future studies on microplastics should prioritize the development of standardized sampling protocols to ensure comparability across diverse ecosystems. Additionally, employing advanced analytical techniques and collaborating across interdisciplinary fields can enhance the accuracy and reliability of microplastic separation and quantification methods.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000172/pdfft?md5=c3a0391430f38073e01f0d17a52206a7&pid=1-s2.0-S2772416624000172-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140024264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microplastic accumulation dynamics and risk assessment in dried fish processed with sea salt at different salting ratios","authors":"Sandhiya Venkatesh ,&nbsp;Bejawada Chanikya Naidu ,&nbsp;Suguna Palanisamy ,&nbsp;Soibam Ngasotter ,&nbsp;S.S. Shaju ,&nbsp;Layana Porayil ,&nbsp;Amjad Balange ,&nbsp;Binaya Bhusan Nayak ,&nbsp;K. A. Martin Xavier","doi":"10.1016/j.hazadv.2024.100415","DOIUrl":"https://doi.org/10.1016/j.hazadv.2024.100415","url":null,"abstract":"<div><p>Global food security, particularly in South Asia and low-income coastal regions like India, relies on seafood consumption, both fresh and dried. Seafood, encompassing small pelagic fish, dried varieties, and salt-cured fish, absorbs xenobiotics like micro/nanoplastics and their associated contaminants during processing. This occurs due to factors such as processing conditions, the status of fish muscle biochemistry, and the additives used, presenting largely unexplored health risks that have received minimal study attention. This study investigates the impact of salting on microplastics (MPs) contamination in cured fish, exploring the intricate relationship between salting, muscle biochemistry, and MPs under controlled conditions. Commercial solar salt used for curing contained an average of 40.72 ± 5.97 MPs/g. Microplastic abundance in cured fish decreased significantly, from 65.7 ± 6 to 3.36 ± 1.5 MPs items/g, with a lower salt-to-fish ratio of 1:10. Characteristics of MPs such as morphotype, size, colour and polymer type in both cured fish and curing salt exhibited similar trends. Protein content and MPs showed a strong negative correlation, while the lipid content correlation with MPs presence was weak. Various MPs indices such as contamination factor, load index and polymer induced risk index emphasized salt's significant role in enhancing contamination in cured fish, posing safety risks to consumers. Given the limited number of studies conducted on comprehending the uptake of microplastics in processed seafood, a critical aspect of food safety, the present study aims to illuminate the intricate interplay between fish biochemistry and microplastic characteristics. Additionally, it explores the role of salt in this dynamic, highlighting implications for both food safety and human health<strong>.</strong></p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000160/pdfft?md5=0bc3c8c6e42b7b5d36901af9eb2edab9&pid=1-s2.0-S2772416624000160-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139986758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and theoretical investigations of photolytic and photocatalysed degradations of crystal violet dye (CVD) in water by oyster shells derived CaO nanoparticles (CaONP)","authors":"Nnabuk Okon Eddy ,&nbsp;Juliet Iye Jibrin ,&nbsp;Richard Alexis Ukpe ,&nbsp;Anduang Odiongenyi ,&nbsp;Amjad Iqbal ,&nbsp;Amos Modeter Kasiemobi ,&nbsp;Joseph Olusola Oladele ,&nbsp;Musa Runde","doi":"10.1016/j.hazadv.2024.100413","DOIUrl":"https://doi.org/10.1016/j.hazadv.2024.100413","url":null,"abstract":"<div><p>Crystal violet dye (CVD) is one of the most stable and toxic dyes, whose adverse consequencus in the aquatic and hence other components of the environment are well documented. Consequently, th remediation of water contaminated by this dye, has several advantages to industries that discharge dye rich-wastes to the aquatic environment. In this study, advantages of using nanoparticles that are ecofriendly and cost effective was implemented by converting CaCO₃ in oyster shells to calcium oxide nanoparticles (CaO<img>NP). The synthesized CaO<img>NP were characterized using UV–visible, XRD, FTIR, SEM, EDX, DLS and XPS techniques.The XRD profile indicated peaks typical to CaO<img>NP with principal peak observed at 2θ= 34.19° and crystalline size equal to 27.70 nm. Information deduced from EDX and XPS also confirmed the composition and electron releasing profile of the CaO<img>NP. The DLS measurement indicated the average diameter of the CaO<img>NP as 50.24 nm, which confirms its fitness as a mesoporous nanoparticles. The application of the CaO<img>NP as a catalyst for the photodegradation of CVD in water showed a strong dependency on some physicochemical parameters but showed an optimum efficiency of 99 % at initial dye concentration of 50 ppm, catalyst dosage of 1.5 g and pH of 11. The degradation kinetics showed a good degree of fitness for the Langmuir-Hinshelwood, modified Freundlich, first order and parabolic diffusion models. The theoretically evaluated bandgap (≈ 4.4 eV) for the nanoparticles agrees with the experimental value and indicates that the material is a semiconductor that absorb in the UV region. The observation of the XPS of the CaO<img>NP before and after photocatalysis indicated that electrons were consumed during the photodegradation process. Also, the conduction band potential of the CaO<img>NP (<span><math><mrow><msubsup><mi>E</mi><mrow><mi>C</mi><mi>o</mi><mi>n</mi><mi>d</mi></mrow><mrow><mo>(</mo><mi>p</mi><mo>)</mo></mrow></msubsup><mrow><mo>=</mo><mspace></mspace><mo>−</mo><mn>1.7</mn><mspace></mspace><mi>e</mi><mi>V</mi><mo>)</mo></mrow></mrow></math></span> was found to be more negative than that of <span><math><mrow><msub><mi>O</mi><mn>2</mn></msub><mo>/</mo><msubsup><mi>O</mi><mn>2</mn><mo>−</mo></msubsup></mrow></math></span> (-0.282 eV), which indicated that the photodegradation reaction is limited by the ability of electrons to reduce the O₂ in the dye solution to superoxide <span><math><msubsup><mi>O</mi><mn>2</mn><mo>−</mo></msubsup></math></span>.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000147/pdfft?md5=c497f4435c78624f4724e4bdbc5e0dc1&pid=1-s2.0-S2772416624000147-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139709777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Why Nigeria should ban single-use plastics: Excessive microplastic pollution of the water, sediments and fish species in Osun River, Nigeria","authors":"Gideon Aina Idowu ,&nbsp;Adewumi Yetunde Oriji ,&nbsp;Kehinde Oluwasiji Olorunfemi ,&nbsp;Michael Oluwatoyin Sunday ,&nbsp;Temitope Olawunmi Sogbanmu ,&nbsp;Oluwatoyin Kikelomo Bodunwa ,&nbsp;Oluwatosin Sarah Shokunbi ,&nbsp;Ademola Festus Aiyesanmi","doi":"10.1016/j.hazadv.2024.100409","DOIUrl":"https://doi.org/10.1016/j.hazadv.2024.100409","url":null,"abstract":"<div><p>The Osun River serves as a source of drinking and domestic water for some communities in Osun State Nigeria, in addition to providing a source of “healing water” for the worshippers of the Osun goddess. The sacred river has earned the status of a UNESCO world heritage centre for the worldwide attention it receives, as a result of the yearly Osun-Oshogbo worship festival. In this study, an initial investigation of microplastic pollution of the river water, sediments and fish species was conducted. Abundance of microplastics in the river water samples, at a maximum of 22,079 ± 134 particles/litre, represents the highest reported so far for a river water globally. FTIR analyses revealed seven polymer materials, including acrylonitrile butadiene styrene (ABS) and ethylene vinyl acetate (EVA), that have not been commonly reported for river environments. Microplastics ranged from 407 ± 244 to 1691.7 ± 443 particles in the gastro-intestinal tract (GIT) of six fish species analysed, with silver catfish (<em>Chrysichthys nigrodigitatus</em>) having the highest concentration. Levels in the fishes are higher than those reported for fishes in Asia and Europe, but similar to some other plastic pollution hotspots in Africa. This study recognizes the uncontrolled and indiscriminate disposal of single-use plastics as a key factor in the level of microplastic pollution of the Osun river. We emphasize the need by Nigerian government to ban certain single-use plastics, as a step towards reducing plastic pollution of Nigerian rivers, that shelter important fish species and provide water for religious and domestic purposes.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S277241662400010X/pdfft?md5=c53f128ff1fac958f0b7424697df84ed&pid=1-s2.0-S277241662400010X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139653539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of passive sampling and high-resolution mass spectrometry for screening emerging pesticides of concern within surface waters","authors":"Pulasthi Serasinghe ,&nbsp;Hao T．K Nguyen ,&nbsp;Caryn Hepburn ,&nbsp;Dayanthi Nugegoda ,&nbsp;Vincent Pettigrove","doi":"10.1016/j.hazadv.2024.100408","DOIUrl":"10.1016/j.hazadv.2024.100408","url":null,"abstract":"<div><p>This study addresses the challenges for environmental monitoring of the increasing number of pesticides used. A novel approach for regional monitoring is proposed, utilizing local pesticide registration data, non-target aquatic organism toxicity, and non-routine pesticides. A suspect screening method, combining passive sampling and high-resolution mass spectrometry was developed. In Greater Melbourne, Australia, 181 priority pesticides were investigated across 32 waterway sites with diverse land uses. Liquid chromatography and quadrupole-time-of-flight mass spectrometry were employed for pesticide detection in a data-independent acquisition mode. Of the 181 pesticides, 21 were tentatively detected at 22 sites, with 5 confirmed using certified reference materials. Notably, newly emerging pesticides not previously identified in Australian waterways were detected. Confirming priority pesticides before routine screening is vital for monitoring program efficiency. The study demonstrates the efficacy of combining regional screening and broad-field sampling with suspect screening using high-resolution mass spectrometry. This approach enhances understanding of emerging pesticide levels, aiding in prioritizing compounds for routine screening programs, thus providing a comprehensive strategy for updating pesticide monitoring in specific regions.</p></div>","PeriodicalId":73763,"journal":{"name":"Journal of hazardous materials advances","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2772416624000093/pdfft?md5=b318e1c4e5269dc60c16201517dd5c00&pid=1-s2.0-S2772416624000093-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139633915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}