Emerging Contaminants最新文献

{"title":"Arsenic variation in soil layers in Bandung Regency, Indonesia: A statistical approach for identifying potential sources","authors":"Nurul Fahimah ,&nbsp;Katharina Oginawati ,&nbsp;Indah Rachmatiah Siti Salami ,&nbsp;Dasapta Erwin Irawan ,&nbsp;Diyah Anggraeni ,&nbsp;Hirundini Rustica Absari ,&nbsp;Utriweni Mukhaiyar ,&nbsp;Udjianna Sekteria Pasaribu ,&nbsp;Kurnia Novita Sari ,&nbsp;Lira Adiyani","doi":"10.1016/j.emcon.2024.100311","DOIUrl":"https://doi.org/10.1016/j.emcon.2024.100311","url":null,"abstract":"<div><p>This research investigates the arsenic concentrations in 96 soil samples from a regency in Indonesia using a statistical approach. Soil samples were collected from three depth layers (topsoil [10–20 cm], subsoil [50–60 cm], and deep soil [90–100 cm]), with each layer consisting of 32 samples. Statistical analysis using SPSS was employed to analyze potential arsenic sources based on the proximity of study locations to geothermal system areas, land use, distance from industry, and the presence of study locations on fault lines.</p><p>The findings indicate that the potential source of arsenic contamination in the soil are suspected to be associated with geothermal system activities and the presence of soil samples on fault lines. The arsenic concentration in locations near to the geothermal system (5-10 km) was 45 times higher (OR = 45, 95% CI = 45–362.57, p &lt; 0.01). Arsenic was found to be 3.828 times higher in study areas situated on fault zones (OR = 3.828, 95% CI = 1.507–9.719, p &lt; 0.01). Additionally, the research suggests that arsenic in the soil may also originate from anthropogenic activities, such as agriculture and industry, as the highest concentrations were found in subsoil or topsoil layers compared to deep soil. The variation in arsenic concentration from highest to lowest in agricultural soil layers was subsoil &gt; topsoil &gt; deep soil, whereas in residential soil, it was subsoil &gt; deep soil &gt; topsoil. The arsenic concentration variation at near distances from industrial areas was topsoil &gt; subsoil &gt; deep soil, contrasting with medium to far distances from industry (subsoil &gt; deep soil &gt; topsoil). Therefore, these findings can be utilized to prioritize remediation efforts and provide input for future research on arsenic contamination in the region.</p></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S240566502400012X/pdfft?md5=148c4a9d5fd1ae418880b647230f5523&pid=1-s2.0-S240566502400012X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140062784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling and optimization of nonylphenol biosorption by novel low-cost magnetic Chlorella vulgaris","authors":"Fatemeh Rahmani ,&nbsp;Nooshin Sajjadi ,&nbsp;Mohammad Hadi Dehghani ,&nbsp;Mozhgan Zaeimdar","doi":"10.1016/j.emcon.2024.100310","DOIUrl":"10.1016/j.emcon.2024.100310","url":null,"abstract":"<div><p>Discharging untreated wastewater causes environmental pollution. This research examined the efficiency of removal and the adsorption process of Emerging Contaminant nonylphenol (NP) using magnetic Chlorella vulgaris (M-Chlorella vulgaris). The characterization of M-Chlorella vulgaris involved XRD, FESEM, EDS-Mapping, BET, FTIR, and VSM analyses. The impact of four different parameters—pH, M-Chlorella vulgaris dose, initial concentration of NP, and contact time on the biosorption process was investigated. To model and optimize the study while minimizing costs and the number of experiments, Response Surface Methodology (RSM) with Central Composite Design (CCD) was employed. According to the findings, the quadratic model with adjusted R² = 0.96 was the best fitted among the other models. With pH = 3.5, dosage = 2.5 g/l, NP concentration = 4 mg/l, and reaction time = 70 min, which are the optimal parameters, the maximum removal effectiveness was about 91%. The Langmuir model (R² = 0.998) and pseudo-second-order model (R² = 0.997) exhibited the best fits for the adsorption isotherm and kinetic studies, respectively. The characteristics of M-Chlorella vulgaris were determined to facilitate a spontaneous nature, and thermodynamic experiments indicated that the process of adsorption of nonylphenol is exothermic. The inexpensiveness and availability of adsorbent, suitable efficiency in the biosorption of pollutant and magnetic collection of pollutant from the aquatic environment can be mentioned as the advantages of this process.</p></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405665024000118/pdfft?md5=138c0abaefb90559d5d27e60d187a210&pid=1-s2.0-S2405665024000118-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139884884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A systematic review of global occurrence of emerging mycotoxins in crops and animal feeds, and their toxicity in livestock","authors":"Oluwatobi Kolawole ,&nbsp;Wipada Siri-Anusornsak ,&nbsp;Awanwee Petchkongkaew ,&nbsp;Christopher Elliott","doi":"10.1016/j.emcon.2024.100305","DOIUrl":"10.1016/j.emcon.2024.100305","url":null,"abstract":"<div><p>Mycotoxins are the most frequently occurring natural contaminant in food and feed. Their occurrence in crops and animal feed represents an enormous challenge, particularly for livestock farmers in terms of increased production costs, reduced animal performance and profitability. This study investigates the scale of emerging mycotoxins contamination of crops and animal feeds globally, and evaluates their impacts on the health and performance of livestock, especially when they co-occur alongside regulated mycotoxins. Emerging mycotoxins including nivalenol, enniatins, beauvericin, diacetoxyscirpenol, fusaric acid, patulin, moniliformin and sterigmatocystin were found to be the most prevalent contaminants of cereals and other feed commodities worldwide. The pooled mean levels for beauvericin, nivalenol, enniatins, moniliformin, sterigmatocystin, diacetoxyscirpenol, fusaric acid, and patulin were 386, 421, 7,854, 204, 136, 126, 370 and 138 μg/kg, respectively. In terms of toxicity, co-occurrence of emerging mycotoxins with each other and also with regulated mycotoxins profoundly impacts livestock performance, even at low levels. Therefore, there is a need for cumulative risk assessments to evaluate the health risks associated with simultaneous exposure to emerging and regulated mycotoxins and also to develop effective mitigation strategies.</p></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405665024000064/pdfft?md5=66d7a53ad0ad3a88c0ed31d4e19240f3&pid=1-s2.0-S2405665024000064-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139886671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transport of graphene oxide in the capillary fringe: Insights from sandbox experiments and numerical simulation","authors":"Taotao Lu ,&nbsp;Feiyu Chen ,&nbsp;Xiaochen Liu ,&nbsp;Xue Bai ,&nbsp;Hao Peng ,&nbsp;Shuangcheng Tang","doi":"10.1016/j.emcon.2024.100308","DOIUrl":"https://doi.org/10.1016/j.emcon.2024.100308","url":null,"abstract":"<div><p>Studying contaminant transport in the capillary fringe (CF), a crucial part of the vadose zone, offers insights into the mechanisms controlling pollution in soils and groundwater aquifers. This paper investigated contaminant transport in the CF by continuously injecting a conservative tracer (NaCl) and graphene oxide nanoparticle (GONP), an adsorptive contaminant, into a sandbox. After entering the CF from the unsaturated zone, both NaCl and GONP underwent lateral transport. The breakthrough curves (BTCs) for NaCl and GONP were derived from water samples collected at predetermined sampling holes. Subsequently, contaminant transport in the CF was modeled using a one-dimensional–two-dimensional (1D-2D) coupled hydrodynamic model. This model incorporated lateral dispersivity (<em>α</em>_L = 1.198 cm) and longitudinal dispersivity (<em>α</em>_T = 0.286 cm), calculated using a point-by-point method. The hydrodynamic dispersion coefficients obtained were then applied to the Brooks and Corey (BC) and the van Genuchten (VG) parametric models. The BC model more accurately simulated the NaCl migration compared to the VG model, leading to its application in simulating GONP transport in the CF. However, the simulated BTCs for GONP showed a lag behind the measured data, especially at high ionic strengths. This discrepancy was attributed to the variable adsorption partition coefficient of GONP under different ionic conditions. During the experiment, GONP adsorption onto the porous media's surface altered the capillary dynamics, notably increasing capillary rise height, decreasing seepage velocity, and reducing GONP dispersion. Therefore, it is necessary to consider the adsorption capacity of the contaminants in order to accurately assess their transport within the vadose zone.</p></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S240566502400009X/pdfft?md5=31c1c8da07ed7e5bcc5569a946402001&pid=1-s2.0-S240566502400009X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139743557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Foliar spraying of chlorpyrifos induces morphometric changes in Glycine max (L.) and shifts native soil microbiome","authors":"Aman Raj ,&nbsp;Muneer Ahmad Malla ,&nbsp;Ashwani Kumar ,&nbsp;Pramod Kumar Khare ,&nbsp;Sheena Kumari","doi":"10.1016/j.emcon.2024.100307","DOIUrl":"https://doi.org/10.1016/j.emcon.2024.100307","url":null,"abstract":"<div><p>Pesticide usage alters plant growth, and development and disturbs native soil microbiome. The present study was carried out to evaluate the effect of Chlorpyrifos (CP-20% EC) on the growth and development of soybean (<em>Glycine max</em>), soil fertility, and soil microbiome. We conducted a pot experiment to assess the impact of different concentrations of chlorpyrifos; recommended dose (RD) and higher dose rates (2× and 4× RD). Chlorpyrifos application significantly altered the growth parameters in soybean (p &lt; 0.05). At higher concentrations (2× and 4× RD) shoot length (17.16 ± 1.04; 14.33 ± 1.15, p &lt; 0.05), root length (3.40 ± 0.36; 2.66 ± 0.28, p &lt; 0.050), leaf count (6.33 ± 0.57; 2.66 ± 0.57; p &lt; 0.05) reduced significantly compared to RD and Control groups. Similarly at these concentrations (2× and 4× RD), significant reduction in fresh shoot weight (0.86 ± 0.008; 0.66 ± 0.002, p &lt; 0.05), dry shoot weight (0.14 ± 0.001; 0.13 ± 0.003, p &lt; 0.05) and root fresh weight (0.13 ± 0.001; 0.09 ± 0.003, p &lt; 0.05) and root dry weight (0.030 ± 0.0005, 0.037 ± 0.003, p &lt; 0.05) was observed compared to the RD and control group. Notably, a significant increase in root and shoot morphometric parameters was observed in RD compared to control (p &lt; 0.05). All the physio-chemical properties such as pH (8.51 ± 0.82), moisture content (33.73 ± 0.04), and electrical conductivity (3.44 ± 0.03) were higher in CP-treated soils compared to control. Similarly, nutrient content such as nitrogen, carbon, and hydrogen were significantly reduced in treated soils compared to control. Elemental analysis showed higher concentrations of As, Cd, and Pb in CP-treated soil (8.7 μg/g, 0.254 μg/g, and 16.477 μg/g, respectively) compared to untreated soil (8.09 μg/g, 0.228 μg/g, and 15.25 μg/g, respectively). We also assessed soil metabolic activity and diversity using Community-level Physiological Profiling (CLPP). CP-treated soil exhibited significantly lesser microbial diversity, with lesser metabolic activity. Metagenomic analysis revealed a shift in bacterial community composition, with Pseudomonadota and Bacteroidota dominating CP-treated soil, while Actinomycetota, Pseudomonadota, and Bacillota were prominent in the control group. Alpha diversity indices indicated higher abundance and species richness in the control sample compared to treatment groups. Functional analysis <em>via</em> PICRUSt2 identified 32 unique sub-classes of biodegrading genes in soil samples, including <em>atzD, tfdA, argB, GLDC, gcvP, glxR, and cpdB</em>. This suggests the potential of soil microbes for xenobiotic degradation, including pesticides. In summary, our study demonstrates that higher CP doses negatively impact soybean growth and alter soil composition, leading to reduced metabolic activity and changes in microbial communities. These findings underscore the importance of considering pesticide dosage and its ecological implications on plants, soil microbiome,","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405665024000088/pdfft?md5=f26c247899c190eb0f174bec002a7687&pid=1-s2.0-S2405665024000088-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139743556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-conventional sorption materials for the removal of legacy and emerging PFAS from water: A review","authors":"Francesco Calore ,&nbsp;Elena Badetti ,&nbsp;Alessandro Bonetto ,&nbsp;Anna Pozzobon ,&nbsp;Antonio Marcomini","doi":"10.1016/j.emcon.2024.100303","DOIUrl":"https://doi.org/10.1016/j.emcon.2024.100303","url":null,"abstract":"<div><p>Per- and polyfluoroalkyl substances (PFAS) are a class of ubiquitous, persistent, and hazardous pollutants that raise concerns for human health and the environment. Typically, PFAS removal from water relies on adsorption techniques using conventional sorption materials like activated carbons (ACs) and ion exchange resins (IERs). However, there is a continuous search for more efficient and performing adsorbent materials to better address the wide range of chemical structures of PFAS in the environment, to increase their selectivity, and to achieve an overall high adsorption capacity and faster uptake kinetics. In this context, results from the application of non-conventional sorption materials (i.e., readily available biological-based materials like proteins and advanced materials like nanocomposites and cyclodextrins) are reported and discussed in consideration of the following criteria: i) removal efficiency and kinetics of legacy PFAS (e.g., PFOA, PFBA) as well as newly-introduced and emerging PFAS (e.g., GenX), ii) representativity of environmental conditions in the experimental setup (e.g., use of environmentally relevant experimental concentrations), iii) regenerability, reusability and applicability of the materials, and iv) role of the material modifications on PFAS adsorption. From this review, it emerged that organic frameworks, nano(ligno)cellulosic-based materials, and layered double hydroxides are among the most promising materials herein investigated for PFAS adsorption, and it was also observed that the presence of fluorine- and amine-moieties in the material structure improve both the selectivity and PFAS uptake. However, the lack of data on their applicability in real environments and the costs involved means that this research is still in its infancy and need further investigation.</p></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405665024000040/pdfft?md5=e02413cfd0293d96a8b24de6c9881d78&pid=1-s2.0-S2405665024000040-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139743826","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pervasiveness of microplastics in the gastrointestinal tract of some selected fish species from Turag River alongside the capital city of Bangladesh","authors":"HM Shahnewaz Khan ,&nbsp;Jabed Hasan ,&nbsp;Mohammed Manik ,&nbsp;Murad Ahmed Farukh ,&nbsp;Md Shahjahan","doi":"10.1016/j.emcon.2024.100309","DOIUrl":"https://doi.org/10.1016/j.emcon.2024.100309","url":null,"abstract":"<div><p>Microplastics (MPs) are synthetic contaminants that have received global attention due to their ubiquitous occurrence, extreme durability, and capacity to harm ecosystems and human health. This study investigated the occurrence of MPs in three fish species (<em>Channa striata</em>, <em>Puntius sophore</em> and <em>Anabas testudineus</em>) collected from two locations (Ashulia Bridge and Mirpur Road) of the Turag River, which flows alongside the Dhaka city, Bangladesh. MPs abundance (items/individuals) was highest in <em>Channa striata</em> (3.8 ± 0.6) from the Ashulia Bridge area and lowest in <em>Puntius sophore</em> (1.8 ± 0.4) from the Mirpur Road area. Fiber was found to be the most dominant (89–93%) form of MPs followed by fragments (21–35%), films (0–26%) and foams (0–5%). The dominant color of MPs was blue (69–83%), then red (20–33%), black (11–14%), green (8–20%), and purple (6–8%). The majority (56–71%) of the MPs assessed were &lt;0.5 mm in size, followed by 0.5–1.0 mm (29–33%) and 1–5 mm (38–53%). ATR-FTIR examination revealed three specific polymer varieties - PP (40%), PS (30%) and LDPE (30%). The results of this study provided a baseline of MPs pollution in one of the major protein sources freshwater fishes and raised concern on public health particularly who consume fishes from the urban waterways.</p></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405665024000106/pdfft?md5=fa4c8909e6fc2f96457e21e3ff415d9d&pid=1-s2.0-S2405665024000106-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139738065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microplastic degradations in simulated UV light, natural light and natural water body: A comparison investigation","authors":"Bocheng Chen,&nbsp;Beibei He,&nbsp;Hao Wu,&nbsp;An Liu","doi":"10.1016/j.emcon.2024.100306","DOIUrl":"https://doi.org/10.1016/j.emcon.2024.100306","url":null,"abstract":"<div><p>Microplastics (MPs) degradation due to light radiation, weathering, water erosion and biodegradation might change MPs physical and chemical characteristics and thereby change MPs behaviors in natural environments. This study conducted a comparison investigation on polyvinyl chloride (PVC), polyethylene (PE) and polyamide (PA) degradation in three different environmental conditions, namely simulated UV light, natural light and natural water body. The results showed that degradation of MPs in natural environments is more complex than the case in a controlled experimental condition (such as simulated UV light). In the conditions of natural light and natural water body, MPs are more easily covered by sediments/microorganisms. Particularly in the natural water body, biofilm development is an important factor for MPs degradation and this is dependent on where MPs are located. PVC in the water surface adsorbed more prokaryotes and eukaryotes than those in the water bottom while PE and PA showed the opposite. The research outcomes also show that a complex interaction between MPs and heavy metals in different environments. In simulated UV light, heavy metals tended to leach from MPs while in the natural light and natural water body, heavy metal concentrations of MPs had a higher variability caused by continuous leaching-adsorption behaviors. Those outcomes were expected to contribute to an in-depth understanding of MP degradations and their environmental behaviors.</p></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405665024000076/pdfft?md5=d48142000d73384fe1d81b695b38a5cf&pid=1-s2.0-S2405665024000076-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139715016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A new hydrophobic deep eutectic solvent composed of menthol and tris(2-ethylhexyl) phosphate for solvent bar microextraction of parabens from biological fluids","authors":"Nabil N. AL-Hashimi ,&nbsp;Husam Abed Alfattah ,&nbsp;Khaleel I. Assaf ,&nbsp;Asma A. Fakhoury ,&nbsp;Saja H. Hamed ,&nbsp;Amjad H. El-Sheikh ,&nbsp;Khairi M. Fahelelbom","doi":"10.1016/j.emcon.2024.100304","DOIUrl":"https://doi.org/10.1016/j.emcon.2024.100304","url":null,"abstract":"<div><p>Parabens are antimicrobial preservatives with extensive applications in cosmetics, toiletries, pharmaceuticals, and food. Considering the legitimate concerns relating to their potential to disrupt multiple endocrine functions, it becomes imperative to prioritize the development of innovative bioanalytical techniques for effectively monitoring their presence in biological samples. In this study, an efficient solvent bar microextraction (SBME) was established, utilizing new hydrophobic deep eutectic solvents (DEs) to determine methylparaben and propylparaben in urine and plasma samples. The DEs comprising menthol and tris(2-ethylhexyl) phosphate (M-TEHP) at various molar ratios were synthesized for the first time to enhance the extraction capacity and promote the eco-friendliness of the DE used as an extraction solvent. Fourier-transform infrared (FT-IR) and proton nuclear magnetic resonance (¹H NMR) spectroscopies were employed to confirm and investigate the properties of the successful synthesis (M-TEHP) DE at a molar ratio of 1:1. The synthesized DE exhibits low microbial toxicity and can be considered an eco-friendly solvent for extraction. Furthermore, quantum-chemical calculations were utilized to predict synthesized DE's structure and interaction energy with selected parabens. The influential operational factors of DE-SBME on the extraction efficiency (EE%) of both parabens were evaluated using response surface methodology based on central composite design, and a total of 30 extraction tests were conducted to determine the optimal conditions. The optimized DE-SBME, in combination with HPLC-DAD, exhibited low detection limits (0.54–0.91 μg L⁻¹), excellent linearity (R² ≥ 0.9993), precise results (RSDs ≤7.6 %), satisfactory recoveries (92–97 %) and negligible matrix effects. Hence, it had remarkable effectiveness and applicability in determining selected parabens in real urine and plasma samples.</p></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405665024000052/pdfft?md5=f12855eae4691ac2cb7538118796c0f3&pid=1-s2.0-S2405665024000052-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139714760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling and optimization of nonylphenol biosorption by novel low-cost magnetic Chlorella vulgaris","authors":"Fatemeh Rahmani, Nooshin Sajjadi, Mohammad Hadi Dehghani, M. Zaeimdar","doi":"10.1016/j.emcon.2024.100310","DOIUrl":"https://doi.org/10.1016/j.emcon.2024.100310","url":null,"abstract":"","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":null,"pages":null},"PeriodicalIF":6.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139825329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}