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Interaction of zinc oxide nanoparticles with soil colloidal suspensions.
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.144001
Veronika Cyprichová, Martin Urík, Sindy Csibriová, Marek Kolenčík, Marek Bujdoš, Peter Matúš, Martin Šebesta
{"title":"Interaction of zinc oxide nanoparticles with soil colloidal suspensions.","authors":"Veronika Cyprichová, Martin Urík, Sindy Csibriová, Marek Kolenčík, Marek Bujdoš, Peter Matúš, Martin Šebesta","doi":"10.1016/j.chemosphere.2024.144001","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.144001","url":null,"abstract":"<p><p>The properties of soil colloids determine the interaction with nanoparticles, their behavior, and destiny in the soil environment including soil solutions. This study examines how several properties of soil colloids, including pH, phosphorus content, clay minerals, and iron oxyhydroxides, influence the interaction with zinc oxide nanoparticles (ZnO-nps). For the experimental setup, four different soils were selected from the temperate climate of central Europe, in Slovakia, exhibiting pH values ranging from 4.6 to 8.0. Two concentrations of ZnO-nps suspended in water, 20 and 200 mg Zn∙L<sup>-1</sup> were applied to the colloidal suspensions extracted from the soils and shaken for 24 hours. Then the soil colloids were separated into three fractions, 100 to 1000 nm in size, 1 to 100 nm in size, and dissolved. Concentrations of Al, Si, Fe, Mn, P, and Zn were measured in these fractions, providing a comprehensive understanding of ZnO-NP distribution and interaction with soil colloids. The study reveals that soil pH significantly affects the distribution of Zn from ZnO-nps across different size fractions. However, the concentration of Fe, Al, and Si had an even greater impact on the concentration of dissolved Zn. Additionally, behavior of Zn following ZnO-NP application is associated with soil P content, where P may stabilize the ZnO-nps. These findings enhance the knowledge of nanoparticle behavior in various soil matrices and contribute to developing more stable, efficient, and easily usable nanoparticle-based applications in environmental science and agriculture.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"144001"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873151","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}
引用次数: 0
A Cyanobacterial outbreak in Lake Avernus: targeted and untargeted analyses and follow up actions for food safety.
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.144006
Ilaria Di Marco Pisciottano, Pasquale Gallo
{"title":"A Cyanobacterial outbreak in Lake Avernus: targeted and untargeted analyses and follow up actions for food safety.","authors":"Ilaria Di Marco Pisciottano, Pasquale Gallo","doi":"10.1016/j.chemosphere.2024.144006","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.144006","url":null,"abstract":"<p><p>A massive Planktothrix rubescens bloom was observed during 2022 in the Lake Avernus, a volcanic lake located in Campania Region (Southern Italy). The cyanobacterial mass migrated, through a channel, to the near Gulf of Pozzuoli, causing the contamination of two marine sites dedicated to mussel farming, thus posing a potential risk for consumers' health. Mussel and water samples, from both the sea and the lake were collected weekly and analyzed by liquid chromatography coupled to tandem mass spectrometry, for identification and quantification of 10 microcystins. Moreover, the samples were analyzed by high resolution mass spectrometry in untargeted mode to determine other cyanotoxins basing on the accurate mass of the precursor ions and their MS/MS spectra. The microcystins were not detected at all, whereas other bioactive peptides, such as anabaenopeptins and oscillamide Y, were detected according to the toxicological profiles described for Planktothrix rubescens in the scientific literature. The case reported represents a modern approach for rapid characterization of some environmental outbreaks, as well as an example regarding how the public Health Authority can manage the possible risk for food safety, due to unknown substances and to enforce legal follow up actions.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"144006"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873785","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}
引用次数: 0
Selective oxidation of ammonium to dinitrogen by a novel catalytic ozonation system: Regulating the N2 selectivity by sulfite.
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.143999
Yuexinxi Wang, Yong Liu, Shizong Wang, Jingwen Wang, Jianlong Wang
{"title":"Selective oxidation of ammonium to dinitrogen by a novel catalytic ozonation system: Regulating the N<sub>2</sub> selectivity by sulfite.","authors":"Yuexinxi Wang, Yong Liu, Shizong Wang, Jingwen Wang, Jianlong Wang","doi":"10.1016/j.chemosphere.2024.143999","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143999","url":null,"abstract":"<p><p>The selective oxidation of NH<sub>4</sub><sup>+</sup>-N into dinitrogen (N<sub>2</sub>) is still a challenge. Currently, traditional advanced oxidation processes often involve in the chlorine free radicals to increase the selectivity of NH<sub>4</sub><sup>+</sup>-N oxidation products towards N<sub>2</sub> but is usually accompanied by the production of many toxic disinfection by-product. Herein, we reported a novel catalytic ozonation system (UV/O<sub>3</sub>/MgO/Na<sub>2</sub>SO<sub>3</sub>) for selective NH<sub>4</sub><sup>+</sup>-N oxidation based on the reducing capability and photochemical properties of Na<sub>2</sub>SO<sub>3</sub>. In the UV/O<sub>3</sub>/MgO/Na<sub>2</sub>SO<sub>3</sub>/NH<sub>4</sub><sup>+</sup>-N system, Na<sub>2</sub>SO<sub>3</sub> could not only reduce the intermediate of NO<sub>2</sub><sup>-</sup> or NO<sub>3</sub><sup>-</sup> to N<sub>2</sub> by inducing the generation of hydrated electrons under UV irradiation, but also reduce the gaseous intermediate of NO<sub>x</sub> to N<sub>2</sub>, thus achieving a high N<sub>2</sub> selectivity (>85 %). Based on the analyses of each component roles, the determination of reactive oxygen species and the evolution of NH<sub>4</sub><sup>+</sup>-N oxidation intermediates, the possible mechanisms of NH<sub>4</sub><sup>+</sup>-N selective oxidation by UV/O<sub>3</sub>/MgO/Na<sub>2</sub>SO<sub>3</sub> system were revealed. This system exhibits a great potential for the NH<sub>4</sub><sup>+</sup>-N removal from water/wastewater. This work provides a new strategy for NH<sub>4</sub><sup>+</sup>-N oxidation into N<sub>2</sub> by advanced oxidation processes independent of the action of chlorine free radicals.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143999"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873649","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}
引用次数: 0
Screening of priority antibiotics in Fenhe River Basin based on the environmental exposure, ecological effects, and human health risk.
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.143953
Ruimin Liu, Qingfeng Long, Yue Liu, Linfang Wang
{"title":"Screening of priority antibiotics in Fenhe River Basin based on the environmental exposure, ecological effects, and human health risk.","authors":"Ruimin Liu, Qingfeng Long, Yue Liu, Linfang Wang","doi":"10.1016/j.chemosphere.2024.143953","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143953","url":null,"abstract":"<p><p>Antibiotics in surface water have attracted increasing attention because of their potential threats to aquatic ecosystems and public health. Therefore, it is crucial to develop a priority antibiotic list and establish a regulatory framework for antibiotic control. Taking the Fenhe River Basin in North China as the study area, a method to rank priority antibiotics based on their environmental exposure, ecological effects, and human health risks was established. Twenty antibiotics were detected, with the highest average concentration (118.30ng/L) of sulfonamides. Among them, azithromycin had the lowest BioWIN3 value, and its logKow value was > 4, which means that it has poor biodegradability, is relatively easily adsorbed in the soil or sediment, and is persistent. Additionally, based on a survey of local species with different nutritional structures, the ecological risk thresholds of antibiotics were calculated. The results showed that quinolones had the lowest risk threshold of average value 287.23 ng/L, with a greater potential for a negative effect on the ecological environment. Based on the threshold, norfloxacin, ofloxacin, and erythromycin were identified as the pollutants of ecological risk, their peak concentrations were approximately 2.4 times, 2 times, and 9 times their risk thresholds, respectively, which mainly distributed in the middle reaches. Regarding human health risks, ciprofloxacin posed the highest health risk, with an average health risk entropy of 2.81. Finally, the calculated results of the priority rating of antibiotics showed that ciprofloxacin, enrofloxacin, erythromycin, and azithromycin were the highest- priority antibiotics and should be prioritized in risk management.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143953"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873224","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}
引用次数: 0
Polypropylene microplastics triggered mouse kidney lipidome reprogramming combined with ROS stress as revealed by lipidomics and Raman biospectra.
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.143926
Mingying Liu, Miao Wang, Xinglin Sun, Ju Mu, Tingting Teng, Naifu Jin, Jiaxuan Song, Bei Li, Dayi Zhang
{"title":"Polypropylene microplastics triggered mouse kidney lipidome reprogramming combined with ROS stress as revealed by lipidomics and Raman biospectra.","authors":"Mingying Liu, Miao Wang, Xinglin Sun, Ju Mu, Tingting Teng, Naifu Jin, Jiaxuan Song, Bei Li, Dayi Zhang","doi":"10.1016/j.chemosphere.2024.143926","DOIUrl":"10.1016/j.chemosphere.2024.143926","url":null,"abstract":"<p><p>Microplastics intrigue kidney toxicity such as mitochondrial dysfunction and inflammation promotion. However, as an organ relying heavily on fatty acid oxidation, how microplastics influence kidney lipidomes remain unclear. Hence, we performed Raman spectra and multidimensional mass spectrometry-based shotgun lipidomics to decode kidney lipidomics landscape under polypropylene microplastics exposure. Kidney functions and cellular redox homeostasis were remarkably disturbed as revealed by levels of biochemical renal function markers, malonaldehyde, hydrogen peroxide and antioxidants. Ultrastructure alterations including the foot process fusion implied the kidney injury associated with lipidomic changes. Raman spectra successfully further confirmed the cellular change of reactive oxygen species and lipid disorders. Lipidomics showed that polypropylene microplastics caused abnormal lipidome and irregular exchange by remodeling triglycerides and phospholipids. Genes involved in lipid metabolism such as Fads1 and Elovl5 exhibited highly diversified expression profiles responding to polypropylene microplastics stress and possessed significant correlations with ROS indicators. These results explained ultrastructure alterations and aggravation of kidney injuries. Our work revealed polypropylene microplastics inducing lipidomic detriment in mouse kidney by Raman spectra and lipidomics firstly, elucidating the significances of lipidomic remodeling coupled with ROS stress in the kidney damages. The findings provided reliable evidence on the health risks of polypropylene microplastics in kidney.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143926"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142820223","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}
引用次数: 0
Organophosphate flame retardants and their metabolites in paired dog food and urine: Pet exposure through food consumption.
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.143960
So-Hwi Park, Pil Jun Yun, Youngmin Hong, Ki-Tae Kim, Gyojin Choo
{"title":"Organophosphate flame retardants and their metabolites in paired dog food and urine: Pet exposure through food consumption.","authors":"So-Hwi Park, Pil Jun Yun, Youngmin Hong, Ki-Tae Kim, Gyojin Choo","doi":"10.1016/j.chemosphere.2024.143960","DOIUrl":"10.1016/j.chemosphere.2024.143960","url":null,"abstract":"<p><p>Companion dogs are exposed to various chemicals. However, our understanding of the sources and pathways of chemical exposure in pets remains limited. In this study, we collected urine samples from 47 dogs and corresponding samples of the food they consumed to analyze the concentrations and dietary exposure to organophosphate flame retardants (OPFRs) and their metabolites (mOPFRs). Triphenyl phosphate (TPHP) and its metabolite, diphenyl phosphate (DHPH), were the predominant compounds detected in dog food and urine samples. The concentration of mOPFRs in urine decreased as body weight increased; however, neither sex nor age significantly influenced mOPFR levels in dog urine. The estimated daily intake of OPFRs (343 ng/kg bw/day) through food consumption (EDI<sub>food</sub>) was comparable to the previously reported levels of polycyclic aromatic hydrocarbons (324 ng/kg bw/day) and higher than those of pesticides (214 ng/kg bw/day), parabens (120 ng/kg bw/day), and polychlorinated biphenyls (103 ng/kg bw/day). By calculating the ratio of EDI<sub>food</sub> to the cumulative daily intake based on urinary mOPFR concentrations, it was found that dietary sources contributed to 66% of the total TPHP exposure in dogs. This finding was further supported by Spearman's correlation analysis between parent OPFR concentrations in dog food and mOPFR levels in urine (p < 0.01), indicating that dietary intake may be one of the most significant exposure pathways for OPFRs in dogs. To the best of our knowledge, this is the first study to investigate the levels of OPFR exposure in paired dog food and urine samples.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143960"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857343","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}
引用次数: 0
Effects of perfluorooctanoic acid and nano titanium dioxide on the immune response and energy allocation in Mytilus coruscus. 全氟辛酸和纳米二氧化钛对珊瑚贻贝免疫反应和能量分配的影响
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.143958
Bingyan Sun, Menghong Hu, Christian Bock, Ying Shao, Haodong Chen, Khor Waiho, Wei Liu, Kiran Khadka, Chaosong Xu, Youji Wang
{"title":"Effects of perfluorooctanoic acid and nano titanium dioxide on the immune response and energy allocation in Mytilus coruscus.","authors":"Bingyan Sun, Menghong Hu, Christian Bock, Ying Shao, Haodong Chen, Khor Waiho, Wei Liu, Kiran Khadka, Chaosong Xu, Youji Wang","doi":"10.1016/j.chemosphere.2024.143958","DOIUrl":"10.1016/j.chemosphere.2024.143958","url":null,"abstract":"<p><p>Perfluorooctanoic acid (PFOA) functions as a surfactant, while nano-titanium dioxide (nano-TiO<sub>2</sub>) serves as an antibacterial agent. These substances are extensively utilized in industrial production and, upon release into aquatic environments, pose significant threats to the viability and development of marine organisms. However, research into the effects of PFOA and nano-TiO<sub>2</sub> on the immune functions and cellular energy allocation (CEA) of bivalves remains limited. To investigate the impact of PFOA and nano-TiO<sub>2</sub> on immunity and cellular energy, we exposed Mytilus coruscus individuals to different concentrations of PFOA (2 and 200 μg/L), either alone or in combination with nano-TiO<sub>2</sub> (0.1 mg/L, particle size: 25 nm) for 14 days. We found that the co-exposure to PFOA and nano-TiO<sub>2</sub> had significant interactive effects on multiple immune function parameters of mussels. PFOA and nano-TiO<sub>2</sub> notably reduced the total hemocyte count (THC), esterase activity (EST), mitochondrial number (MN), lysosomal content (LYSO), and cell viability, while concurrently elevating hemocyte mortality (HM) and reactive oxygen species (ROS) levels. Some immune-related genes, such as Tumor Necrosis Factor-alpha (TNF-α) and Myeloid Differentiation Primary Response 88 (MyD88) were downregulated, while others such as Interleukin 17 (IL-17) and Transforming Growth Factor-beta (TGF-β) were upregulated after 14-day exposure to combined pollutant exposure. Furthermore, negative effects on CEA were observed under both individual and combined pollutant stress. Therefore, PFOA and nano-TiO<sub>2</sub> regulate cellular and humoral immunity through the regulation of immune genes as mediators, while simultaneously disrupting cellular energy metabolism. The immunotoxicity of organic and particulate pollutants, and their mixtures, thus poses a significant risk to the immune defense capabilities of mussel populations in polluted coastal environments.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143958"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142866736","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}
引用次数: 0
Base-catalyzed hydrolysis mechanism of polychlorinated dibenzo-p-dioxins based on quantitative structure-activity relationship.
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.143938
Kun Xie, Haiqin Zhang, Zhijian Wang
{"title":"Base-catalyzed hydrolysis mechanism of polychlorinated dibenzo-p-dioxins based on quantitative structure-activity relationship.","authors":"Kun Xie, Haiqin Zhang, Zhijian Wang","doi":"10.1016/j.chemosphere.2024.143938","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143938","url":null,"abstract":"<p><p>Polychlorinated dibenzo-p-dioxins (PCDDs) are persistent organic pollutants that pose considerable threats to ecological and human health owing to their high toxicity potential. Understanding the mechanisms for underlying the base-catalyzed hydrolysis of PCDDs in aquatic environments is essential for assessing their environmental behaviour and ecological risks. Herein, we combined quantitative structure-activity relationship (QSAR) models with density functional theory calculations to analyse the base-catalyzed hydrolysis mechanisms of PCDDs. Among the four developed QSAR models, the single-parameter QSAR model based on the lowest unoccupied molecular orbital energy (E<sub>LUMO</sub>) demonstrated the best performance, achieving a coefficient of determination of 0.89 and a root mean square error of 0.49, indicating superior overall performance. Results indicate that the second-order rate constants for base-catalyzed hydrolysis (k<sub>OH</sub>) of PCDDs are primarily influenced by E<sub>LUMO</sub>, molecular polarizability (α), molecular volume (V<sub>m</sub>), degree of chlorination (N<sub>Cl</sub>), and chlorine position. Specifically, increases in the α and V<sub>m</sub> values of PCDDs lead to higher logk<sub>OH</sub> values, while an increase in the E<sub>LUMO</sub> value results in a lower logk<sub>OH</sub> value. This study elucidates the relationship between the molecular structure and the rate of base-catalyzed hydrolysis of PCDDs for the first time, providing valuable insight into their environmental fate. Furthermore, this research offers a novel theoretical perspective on the base-catalyzed hydrolysis of PCDDs, which will aid in regulatory assessments and risk management.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143938"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873059","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}
引用次数: 0
Urinary concentrations of eighteen environmental phenols and the associations with feeding pattern in infants in the first 6 months of life. 出生后 6 个月婴儿尿液中 18 种环境酚的浓度及其与喂养模式的关系。
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.143954
Li Shu, Pianpian Fan, Yuanzhi Chen, Weifeng Tang, Zhiwei Liu, Zhong-Cheng Luo, Fengxiu Ouyang
{"title":"Urinary concentrations of eighteen environmental phenols and the associations with feeding pattern in infants in the first 6 months of life.","authors":"Li Shu, Pianpian Fan, Yuanzhi Chen, Weifeng Tang, Zhiwei Liu, Zhong-Cheng Luo, Fengxiu Ouyang","doi":"10.1016/j.chemosphere.2024.143954","DOIUrl":"10.1016/j.chemosphere.2024.143954","url":null,"abstract":"<p><p>Environmental phenols are a group of typical endocrine disruptors, and widely detectable in human breast milk and infant formulas. However, exposures data are scarce in early infancy, a particularly sensitive period to environmental pollutants exposures. We aimed to prospectively assess urinary concentrations of eighteen environmental phenols in infants from birth to 6 months of age and their associations with feeding patterns (breastfeeding, formula and mixed-feeding). This study included 197 mother-infant pairs. Urinary concentrations of six parabens (PBs), seven bisphenols, four benzophenones (BPs) and triclosan were measured in infants at the ages of 3 days, 42 days, 3 and 6 months by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Multivariable linear regression models were applied to evaluate the associations between infant feeding types and urinary phenol concentrations in log<sub>10</sub>-transformed scale. The detection rates of bisphenol A and S, methyl 4-hydroxybenzoate (MeP), ethyl 4-hydroxybenzoate (EtP), and propyl 4-hydroxybenzoate (PrP) were persistently high (ranged 48.7%-100.0%) across all ages (3 days, 42 days, 3 and 6 months). The detection rates of bisphenol P, B and AP were high (ranged 76.9%-95.9%) at age 3 days, and lower (14.4%-88.0%) at later ages. Compared to exclusive breastfeeding, mixed feeding was associated with 0.32 (95% CI: 0.01, 0.62, p < 0.05) higher log (BPA) (μg/g creatinine) at 42 days, 0.69 (0.03, 1.35) higher log (TCS) (μg/g creatinine) at 3 months, 0.54 (0.08, 1.00) higher log (EtP) (μg/g creatinine) at 6 months; formula feeding was associated with 1.30 (0.59, 2.00) and 0.91 (0.22, 1.60) higher log (BPB) (μg/g creatinine) at the age of 42 days and 3 months respectively, 1.19 (0.003-2.37) higher log (BPP) and 0.95 (0.27-1.64) higher log (BPS) (μg/g creatinine) at 3 months. In conclusion, exposures to BPA and its analogs, and parabens (MeP, EtP, and PrP) were extensive in early postnatal life of infants. Breastfeeding might be a safer form of feeding for infants against exposure to some phenols.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143954"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142831224","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}
引用次数: 0
MXene-rGO Nanocomposite based Electrochemical Immunosensor for detection of Endosulfan- an organochlorine pesticide.
Chemosphere Pub Date : 2024-12-19 DOI: 10.1016/j.chemosphere.2024.143997
Riya Sharma, G Pratheeth Bhat, Sonu Gandhi
{"title":"MXene-rGO Nanocomposite based Electrochemical Immunosensor for detection of Endosulfan- an organochlorine pesticide.","authors":"Riya Sharma, G Pratheeth Bhat, Sonu Gandhi","doi":"10.1016/j.chemosphere.2024.143997","DOIUrl":"https://doi.org/10.1016/j.chemosphere.2024.143997","url":null,"abstract":"<p><p>Endosulfan (Ed), a widely used organochlorine pesticide, is classified as a persistent organic pollutant (POP). Its long half-life, resistance to degradation, and bioaccumulation in the food chain contaminates soil, water, and air. Such widespread environmental damage triggers monitoring its levels for ensuring compliance with safety regulations and protecting public health. In the current work, Ed was chemically altered and coupled with a carrier protein to elicit an immunological response. The purified in-house generated antibodies against Ed (Ed-Ab) were characterized by sodium dodecyl-sulfate polyacrylamide gel electrophoresis (SDS-PAGE). MXene, a class of 2D inorganic compounds, is known to depict significant optoelectrical potential. Herein, we have synthesized a novel nanocomposite of MXene and reduced graphene oxide (rGO). For designing the MXene-rGO biosensor, Ed-Ab were combined with the nanocomposite post characterization by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDAX), X-ray photoelectron spectroscopy (XPS) and Fourier Transform infrared spectroscopy (FTIR). Using the differential pulse voltammetry (DPV), electrochemical parameters such as pH, temperature, scan rate and response time of the electrode were evaluated. The fabricated electro-immunosensor was employed for the detection of endosulfan wherein the limit of detection (LOD) for Ed was determined to be 0.497 ppt with a linear range of 0.1 ppt to 1 ppm. The composed electrode's working efficacy and sensitivity against similar cross-reactive pesticides was also determined. The MXene-rGO based nanocomposite depicted potential for determination of Ed traces in environmental samples.</p>","PeriodicalId":93933,"journal":{"name":"Chemosphere","volume":" ","pages":"143997"},"PeriodicalIF":0.0,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873215","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}
引用次数: 0
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