Environmental Chemistry and Ecotoxicology最新文献

{"title":"Ecotoxicological consequences of manganese mining pollutants and their biological remediation","authors":"Sudeshna Dey ,&nbsp;Banismita Tripathy ,&nbsp;M. Santosh Kumar ,&nbsp;Alok Prasad Das","doi":"10.1016/j.enceco.2023.01.001","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.01.001","url":null,"abstract":"<div><p>Over the years, mining and metallurgical activities have rapidly influenced the human population. The manufacturing process of manganese (Mn) compounds and their use in industries increased the negative effect on the environment. Therefore, the recovery process of Mn from metal-containing wastes has become very crucial. Mn is a trace mineral found in various forms in the earth's crust and is present abundantly in terrestrial and aquatic environments. Due to the presence of high-level toxicity in surface waters, aquatic organisms exhibit a high-level toxic response. Mn is composed of many minerals such as oxides, sulfates, carbonates, etc. found naturally in the earth. Chronic exposure to this metal pollutant can result in adverse effects and various symptoms related to neurotoxicity including cognitive, Parkinson's disease, manganism, dystonia, and in plants symptoms like chlorosis in leaves and necrotic leaf spots. Mn is released into water bodies, especially through soil erosion, mining activities, and many anthropogenic activities. The toxicity depends on several aspects including the dose, route of exposure, species, and nutritional status of the individual. This element can be considered a systemic toxicant that can damage the multiple organs of humans. These microorganisms will degrade and detoxify the pollutants in the soil, water, and other environments into a non-toxic form that is not harmful to the environment. This review aims to summarize the toxicity of Mn mining pollutants in the environment as well as in humans, plants, and animals and describes the biological remediation strategies. This review also focuses on the environmental Mn pollution and the future aspects to control the Mn pollutants through biological remediation approaches.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 55-61"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49890800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative toxicity of fresh and expired butachlor to earthworms Eisenia fetida in natural soil: Biomarker responses","authors":"Mehran Arabi,&nbsp;Fatemeh Mahmoodian","doi":"10.1016/j.enceco.2023.03.002","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.03.002","url":null,"abstract":"<div><p>Butachlor as a selective pre-emergent herbicide, is mainly used to control the growth and productivity of certain annual grass and broad-leaf weeds. As non-target soil creatures, earthworms are affected detrimentally due to direct contact with pesticides. Our purpose was to compare the changes in the oxidative stress biomarkers in earthworms <em>Eisenia fetida</em> under the exposure of fresh and expired butachlor in the natural soil. LC₅₀ of the fresh/unexpired and expired butachlor were determined by probit analysis amounting ≤440 and ≤ 471 mg/kg dry soil, respectively. Earthworms were then exposed to three sublethal concentrations (1/5th, 1/10th, and 1/20th of LC₅₀) of both fresh and expired butachlor for 4 and 8 days. The level of oxidative stress biomarkers namely lipid peroxidation, glutathione S-transferase, and carbonylated proteins were increased. Besides, the catalase activity and value of total antioxidant capacity in earthworm's caulomic fluid were found to be decreased. In addition, it was clearly showed that butachlor can cause tissue damages in earthworms. The fresh and expired butachlor trigger the onset of oxidative damages as illustrated by altered oxidative stress biomarkers and tissue damages, particularly at the end of 8 days and high concentrations. Contrary to expiration, we found evidence that expired BUC is acutely toxic to earthworms. The fresh BUC was more deleterious than expired one to earthworms. Meanwhile, it must be considered that the regulations towards disposal of expired toxicants must be strictly followed without impairing the soil ecosystem.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 108-119"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49890804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Phthalate metabolites in loggerhead marine turtles (Caretta caretta) from the Mediterranean Sea (East Spain region)","authors":"Olga Novillo Sanjuan ,&nbsp;Shannen Thora Lea Sait ,&nbsp;Susana V. Gonzalez ,&nbsp;Jesús Tomás ,&nbsp;Juan A. Raga ,&nbsp;Alexandros G. Asimakopoulos","doi":"10.1016/j.enceco.2023.08.003","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.08.003","url":null,"abstract":"<div><p>The exposure of marine reptiles to phthalates has received considerable attention due to the ubiquitous occurrence of these contaminants in the marine environment. The occurrence of phthalate metabolites is established in human populations and marine mammals, but data is scarce for marine reptiles. In this study, concentrations of 18 phthalate metabolites were determined in liver samples from 79 loggerhead marine turtle (<em>Caretta caretta</em>) samples collected between 2016 and 2021 in the limits of the Valencian Community (East Spain). For this purpose, the phthalate metabolites were purified from the livers by solid phase extraction and were quantified by UPLC-MS/MS. Fifteen phthalate metabolites were detected in the samples. Monoethyl phthalate (mEP), monomethyl phthalate (mMP), mono-n-butyl phthalate (mBP), phthalic acid (PA) and mono-n-hexyl phthalate (mHxP) were the most abundant metabolites, accounting for detection rates &gt;85%. The highest median concentrations were found for PA (24.2 ng/g dry weight, d.w.) and mHxP (20.3 ng/g d.w.) followed by mMP (12.0 ng/g d.w.), mEP (5.76 ng/g d.w.) and mBP (4.26 ng/g d.w.). The sum of the medians of these five phthalate metabolites (Σ₅PhMet) indicated that concentrations were higher for turtles during year 2020, while a negative association was found between [Σ₅PhMet] and the turtle size. To our knowledge, this is the first study on the biomonitoring of 18 phthalate metabolites in loggerhead marine turtles, and results show that western Mediterranean loggerhead turtles are usually exposed to these contaminants.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 178-185"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49890806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effective removal of antibiotic resistance genes by high-frequency electromagnetic field combined with chlorine disinfection","authors":"Jingya Shi ,&nbsp;Chunxia Jiang ,&nbsp;Yuyi Yang","doi":"10.1016/j.enceco.2023.11.002","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.11.002","url":null,"abstract":"<div><p>The presence of antibiotic resistance genes (ARGs) and antibiotic-resistant bacteria (ARB) in the environment is of great concern to human health. This study developed a new combination of high-frequency electromagnetic field (HEMF) and low-dosage chlorine disinfection to reduce the abundance of extracellular ARG (eARG) <em>sul</em>2 and intracellular ARG (iARG) <em>ade</em>F. The removal efficiencies of <em>sul</em>2 and <em>ade</em>F from sulfamethoxazole- and multidrug-resistant <em>Acinetobacter junii</em> were measured by quantitative PCR (qPCR). Compared to chlorine disinfection alone, the combination of HEMF treatment exhibited significantly improved ARG removal efficiency. The highest removal efficiencies of <em>sul</em>2 and <em>ade</em>F under the combination were 75.7% and 91.4%, respectively. Treatment time and the dosage of chlorine played pivotal roles in the removal efficiency of ARGs via HEMF treatment and chlorine disinfection, respectively. Importantly, a combination of low-dose chlorine with HEMF treatment could serve as a viable alternative to high-dose chlorine disinfection. This work offers essential process parameters for optimizing the elimination of iARGs and eARGs and presents a viable solution for addressing the issue of ARG contamination.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 213-219"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259018262300019X/pdfft?md5=588ed33f224733413ca9461cf27c9936&pid=1-s2.0-S259018262300019X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"92115851","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":"Eco-toxicity of hexavalent chromium and its adverse impact on environment and human health in Sukinda Valley of India: A review on pollution and prevention strategies","authors":"Subhadarsini Mohanty ,&nbsp;Ankuri Benya ,&nbsp;Sujata Hota ,&nbsp;M. Santhosh Kumar ,&nbsp;Shikha Singh","doi":"10.1016/j.enceco.2023.01.002","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.01.002","url":null,"abstract":"<div><p>Sukinda Valley of Jajpur district, Odisha contributes about 98% of India's total chromite reserves with about 334 million tons annual production rate globally, which plays a colossal role to strengthen the economy of our country and leads to sustainable development. The consequences related to chromite mining and excessive production of chromium have entitled this valley a “Valley of Despair”. A far-reaching production of different forms of chromite ore has bowed this area into a contamination-prone region due to the deposition of an unacceptable amount of chromium in the soil, sediment, groundwater and air of Sukinda. Around 1.8 lakh mining workers and nearby village dwellers are getting affected due to the presence of the forbidden amount of chromium ions. The foremost roots of exposure by humans are inhalation of contaminated air, accidental ingestion and contact absorption by skin. In the environment, chromium occurs in different forms and its level of toxicity also varies in each state. Chromium in its hexavalent form is bio-leachable and water-soluble. Thereby easily contaminates the water body which in turn becomes accessible to human beings and reacts with the cellular components. Long-term exposure to the human body may result in initiating several serious diseases like microcytic anaemia, mitochondrial and DNA damage of blood cells which in turn induces carcinogenicity, occupational asthma, airway hypersensitivity, nose, eye and skin irritation etc. The repercussion of chromium contamination at the terrestrial level is not endemic but also invades other sectors of the natural environment via the food chain and other means of transportation. Numerous on-going studies are yet to be carried out for the reduction and remediation of chromium from the contaminated environment. Nevertheless, this issue is worsening at a rapid rate making it difficult to tackle. The chromite mining activities in Sukinda Valley are creating difficulties for the livelihood as well as for the natural environment due to the discharge of massive amount of contaminants. The issue related to the chromium contamination is gigantic and needs urgent management and control strategies. Therefore, the present review focuses on the present scenario to combat deleterious effects initiated as a result of long-term exposure to metallic pollutant, Hexavalent Chromium [Cr(VI)] on the natural environment as well as on human health specifically on the health of mining workers and villagers residing near the Sukinda Valley, Odisha.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 46-54"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49906669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A review of activated carbon to counteract the effect of iron toxicity on the environment","authors":"Shilpi Das ,&nbsp;Susmita Mishra ,&nbsp;Himadri Sahu","doi":"10.1016/j.enceco.2023.02.002","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.02.002","url":null,"abstract":"<div><p>The increase in the level of iron concentration in drinking water due to natural and anthropogenic activities has become a major problem imposing a severe risk to human wellness. Mining and associated activities have qualitative and quantitative effects on the water regimes in and around the mines. People residing in the mining areas of Odisha, India, confronted a typical problem of iron contamination in water. Almost 60% of the surface water and 50% of the drinking water constitutes iron ions more than the permissible limit established by World Health Organization (W.H·O) i.e. 0.3 mg/L has been noted. Excessive iron accumulation may cause severe health problems such as hemochromatosis, diseases related to the heart and central nervous system, cirrhosis of the liver, diabetes, nausea, etc. Available literature has been incorporated on iron remediation by adsorption technology. This technology has been widely accepted because it offers economic and environmental benefits such as low cost, availability, profitability, ease of operation, and high removal efficacy. Thus the feasibility of activated carbon prepared from various agro-wastes for eradication of iron ions by batch and fixed-bed adsorption has been critically reviewed in this paper.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 86-97"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49890802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating PFHxS toxicity to invertebrates and microbial processes in soil","authors":"Samarasinghe Vidane Arachchige Chamila Samarasinghe ,&nbsp;Md Mezbaul Bahar ,&nbsp;Fangjie Qi ,&nbsp;Kaihong Yan ,&nbsp;Yanju Liu ,&nbsp;Ravi Naidu","doi":"10.1016/j.enceco.2023.03.003","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.03.003","url":null,"abstract":"<div><p><em>Per</em>- and poly-fluoroalkyl substances (PFAS) have raised global concerns regarding soil contamination and the subsequent adverse effects on soil organisms. PFOS, PFOA, and PFHxS are among the commonly detected PFAS in the environment with much attention directed to PFOS and PFOA and minimal information available on the toxicity of PFHxS for ecotoxicological assessments. Therefore, this study focuses on the toxic potential of PFHxS to soil biota. The effects of PFHxS to microbial processes and earthworms were assessed in a wide range of concentration (0–1000 mg/kg) in soil to define the safe concentration. The soil enzyme activities (dehydrogenase activity and soil respiration rate) were significantly reduced after exposure to PFHxS at concentrations exceeding 100 mg/kg. The bacterial community suffered more than the fungal community upon PFHxS exposure. Bacterial diversity and richness were inhibited due to PFHxS exposure. However, at taxonomic level, growth of some bacterial phyla was stimulated (e.g., <em>Actinobacteria</em>) while others were inhibited (e.g., <em>Acidobacteria)</em>. Earthworm survival was also significantly affected at concentrations exceeding 100 mg/kg. Our findings showed that exposure to PFHxS negatively affects the soil microbial processes and earthworm survival, potentially jeopardising their functions.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 120-128"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49890805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Why is the Biotic ligand model so scarcely applied in Brazil? A review","authors":"Nikolas Gomes Silveira de Souza ,&nbsp;Laura Isabel Weber ,&nbsp;Victor Barbosa Saraiva ,&nbsp;Maria Inês Paes Ferreira ,&nbsp;Vicente de Paulo Santos de Oliveira ,&nbsp;Jader Lugon Júnior ,&nbsp;Rachel Ann Hauser-Davis ,&nbsp;Renato Matos Lopes ,&nbsp;Samantha Eslava Martins ,&nbsp;Manildo Marcião de Oliveira","doi":"10.1016/j.enceco.2023.05.001","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.05.001","url":null,"abstract":"<div><p>Brazil boasts of large hydrographic basins, numerous lentic environments, and an extensive coastal region. These aquatic environments are susceptible to the presence of metals originated from both natural and anthropic activities, so methods to assess the ecological risk to these environments, such as the Biotic Ligand Model (BLM), are of immense value. This study comprises a systematic review of selected articles published from 2008 to 2020 to answer the following question: Why is BLM so scarcely applied in Brazil? Data was compiled to identify the origin, tests, methods, journal impact factor, and year of publication of all included papers retrieved from the Scopus database. The BLM was shown as efficient in predicting metal toxicity in both seawater and freshwater considering both organisms and environmental factors (speciation in water). Copper, cadmium, nickel, zinc, lead, and silver were the most reported throughout the years, with copper ranking first, reported in 133 publications. Other metals were also reported, but in a lower number of published papers. <em>Daphnia magna</em> was the most evaluated test organism. Several BLM papers were published in relatively high impact factor journals (4,93 on average), reinforcing the importance of the subject. Brazil ranked 7th in BLM publishing, participating with 4% of the published articles from the retrieved total, with most studies published by research groups in the South region. Some recommendations are raised in this review, such as the need for more interactions between research groups in Brazil, deeper connectivity between legislation and BLM studies and further BLM applications in the country, as each waterbody displays its own specific particularities.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 135-144"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49891324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum regarding missing ethics approval statements in previously published articles","authors":"","doi":"10.1016/j.enceco.2022.12.001","DOIUrl":"https://doi.org/10.1016/j.enceco.2022.12.001","url":null,"abstract":"","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Page 45"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49843816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient removal of hexavalent chromium ions from simulated wastewater by functionalized anion exchange resin: Process optimization, isotherm and kinetic studies","authors":"J. Leonard ,&nbsp;Sivamani Sivalingam ,&nbsp;Rejeti Venkata Srinadh ,&nbsp;Susmita Mishra","doi":"10.1016/j.enceco.2023.03.001","DOIUrl":"https://doi.org/10.1016/j.enceco.2023.03.001","url":null,"abstract":"<div><p>In the present study, hazardous heavy metal ion hexavalent chromium (Cr(VI)) was removed from aqueous solution by using Indion GS-300 (IGS-300), strong base anion exchange resin. The process parameters for the removal of Cr(VI) were optimized using response surface methodology (RSM) approach. Procured resin was analyzed by various techniques like FTIR, and FESEM associated with elemental analysis which provided functional groups and surface structure of the adsorbents. Various batch adsorption experiments were conducted by varying parameters such as Cr(VI) concentrations from 5 mg/L to 45 mg/L, 2 to 10 pH, IGS-300 resin dosage between 0.38 and 1.88 g/L, and temperature of 20–40 °C with 90 min fixed contact time. Fixed time was determined from preliminary study of the present work. The maximum adsorption capacity of IGS-300 resin was found 294.11 mg/g and 98.20% of removal achieved with optimum conditions of 4 pH, 1.50 g/L adsorbent dosage, 15 mg/L Cr(VI) concentration and 35 °C temperature. The experimental data was found with best fitted Freundlich Isotherm and pseudo second order kinetic model. Regeneration study was also done on the adsorbed resins using different solution includes water, 0.1 M HCl, and 0.1 M NaOH. Up to 3 cycles of 0.1 M NaOH treatment, resin showed &gt;50% Cr(VI) removal in aqueous solution whereas water and HCl were found less effective on third cycle. Therefore, this study found that IGS-300 resin is more efficient adsorbent for the removal of Cr(VI) from aqueous solutions and possessing highly significant regeneration capacity.</p></div>","PeriodicalId":100480,"journal":{"name":"Environmental Chemistry and Ecotoxicology","volume":"5 ","pages":"Pages 98-107"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49890803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}