Journal of hazardous materials letters最新文献_第2页

Per- and polyfluoroalkyl substances in rainfall runoff from an AFFF-impacted concrete pad: A field simulation study

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-28 DOI: 10.1016/j.hazl.2024.100137

Phong K. Thai , Jeffrey T. McDonough , Trent A. Key , Anita Thapalia , Scott Porman , Pritesh Prasad , Stephanie Fiorenza , Hirozumi Watanabe , Craig M. Barnes , Jochen F. Mueller

{"title":"Per- and polyfluoroalkyl substances in rainfall runoff from an AFFF-impacted concrete pad: A field simulation study","authors":"Phong K. Thai , Jeffrey T. McDonough , Trent A. Key , Anita Thapalia , Scott Porman , Pritesh Prasad , Stephanie Fiorenza , Hirozumi Watanabe , Craig M. Barnes , Jochen F. Mueller","doi":"10.1016/j.hazl.2024.100137","DOIUrl":"10.1016/j.hazl.2024.100137","url":null,"abstract":"<div><div>Per- and polyfluoroalkyl substances (PFAS) retained within hardscape have been observed to leach over time in numerous laboratory studies. The aim of this study was to measure the release of key PFAS in rainfall runoff from a concrete pad impacted by historical AFFF use at the field-scale. Rainfall simulations were conducted on a 5 m<sup>2</sup> (1 ×5 m) plot for 3 consecutive days. Runoff water was collected every 2 minutes and analyzed for 5 PFAS commonly associated with AFFF. Surface samples of the concrete were collected from the plot after the rainfall runoff experiment. Perfluorooctane sulfonate (PFOS) exhibited the highest concentrations within the concrete (up to ∼4000 μg kg<sup>−1</sup>) and runoff water (up to 500 μg L<sup>−1</sup>), followed by 6:2 fluorotelomer sulfonate (6:2 FTS). PFAS concentrations in runoff water were higher in the first sample and then decreased in the consecutive samples of each rainfall simulation. It is estimated that the percentage of the total PFAS mass within the surface of the concrete contributing to runoff samples ranged from 0.006 % (PFOS) to 0.031 % (PFHxA) per rainfall event. This suggests low but sustained PFAS leaching from AFFF-impacted concrete into runoff water. Our findings confirmed that concrete impacted by legacy use of AFFF is a likely secondary source of PFAS in runoff water and highlight some similarities and differences between laboratory- and field-scale rainfall simulations.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"6 ","pages":"Article 100137"},"PeriodicalIF":6.6,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143169645","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}

引用次数: 0

Effect of triclosan on phosphate solubilising bacteria in mangrove ecosystem: In-vitro and In-vivo 三氯生对红树林生态系统中磷酸盐增溶菌的体外和体内影响

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-19 DOI: 10.1016/j.hazl.2024.100136

R.K. Dash , K. Kumar , S.P. Shukla , S. Kumar , S. Kumar H , S. Karmakar , T. Paul

{"title":"Effect of triclosan on phosphate solubilising bacteria in mangrove ecosystem: In-vitro and In-vivo","authors":"R.K. Dash , K. Kumar , S.P. Shukla , S. Kumar , S. Kumar H , S. Karmakar , T. Paul","doi":"10.1016/j.hazl.2024.100136","DOIUrl":"10.1016/j.hazl.2024.100136","url":null,"abstract":"<div><div>Triclosan (TCS) is a widely used biocide found in medicinal, household, and personal care products, frequently detected in various environmental matrices, posing significant threats to microbial communities and overall ecosystem functioning. This study evaluates the <em>in vivo</em> and <em>in vitro</em> effects of triclosan (TCS) on phosphate-solubilising bacteria (PSB) in mangrove ecosystems. Two experimental approaches were employed: a microcosm (<em>in vivo</em>) study and a laboratory (in vitro) analysis. Five isolated PSB strains—<em>Sphingomonas paucimobilis</em>, <em>Rhizobium radiobacter</em>, <em>Serratia ficaria</em>, <em>Klebsiella oxytoca</em>, and <em>Klebsiella pneumoniae</em>—were selected from the mangrove ecosystem for investigation. The minimum inhibitory concentration (MIC) results revealed that <em>Klebsiella pneumoniae</em> exhibited the highest resistance to TCS among the tested strains. <em>In vivo</em> experiments demonstrated a significant reduction in soil-available phosphorus and enzymatic activities, including acid and alkaline phosphatase, dehydrogenase, and fluorescein diacetate (FDA) activity, in TCS-exposed samples throughout the exposure period. <em>In vitro</em> results showed that phosphate solubilisation decreased significantly with increasing TCS concentrations in all strains except <em>Klebsiella pneumoniae</em>. Overall, TCS effectively inhibited the growth of PSB in mangrove ecosystems. This study is the first to report the impact of TCS on PSB in mangroves and provides valuable data for future research on microbial communities in such environments.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"6 ","pages":"Article 100136"},"PeriodicalIF":6.6,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748804","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}

引用次数: 0

Hitchhikers on traveling microplastics: Three necessary steps for bacteria becoming dangerous invaders 微塑料旅行中的 "搭便车者"：细菌成为危险入侵者的三个必要步骤

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-01 DOI: 10.1016/j.hazl.2024.100133

Xiaohan Zhang , Ying Zhang , Yongzheng Ma , Zhiguang Niu

{"title":"Hitchhikers on traveling microplastics: Three necessary steps for bacteria becoming dangerous invaders","authors":"Xiaohan Zhang , Ying Zhang , Yongzheng Ma , Zhiguang Niu","doi":"10.1016/j.hazl.2024.100133","DOIUrl":"10.1016/j.hazl.2024.100133","url":null,"abstract":"<div><div>Microplastics (MPs) have received great concern in recent years, and whether the bacteria carried by traveling MPs would cause ecological risks is a hot topic for debate. The colonized bacteria (i.e., hitchhikers) on traveling MPs which become invasive species in the new environment, need to be completed in three steps: arriving, falling, and growing. However, most previous studies only focused on the first step, which we think is insufficient to discuss species invasion. Thus, in this frontier review, we reviewed the progress of the current research on the uniqueness of bacterial communities on MPs, and we summarized that the uniqueness of the plastisphere was not as high as previously thought. Moreover, we explained why the three steps were necessary to complete the bacterial species invasion. Furthermore, we analyzed the technical difficulties hindering discussing MPs as invasive species carriers, as well as the perspectives in future research. Therefore, this frontier review presents new insights into the role of MPs as bacterial carriers, and suggests study directions for future research.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100133"},"PeriodicalIF":6.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651888","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}

引用次数: 0

µ-X-ray fluorescence (XRF) and fluorine K-edge µ-X-ray absorption near-edge structure (XANES) spectroscopy for detection of PFAS distribution in the impacted concrete 用 µ-X 射线荧光 (XRF) 和氟 K 边 µ-X 射线吸收近边结构 (XANES) 光谱检测受影响混凝土中 PFAS 的分布情况

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-01 DOI: 10.1016/j.hazl.2024.100134

Phong H.N. Vo , Christian Vogel , Hong T.M. Nguyen , Brett R. Hamilton , Phong K. Thai , Philipp Roesch , Franz-Georg Simon , Jochen F. Mueller

{"title":"µ-X-ray fluorescence (XRF) and fluorine K-edge µ-X-ray absorption near-edge structure (XANES) spectroscopy for detection of PFAS distribution in the impacted concrete","authors":"Phong H.N. Vo , Christian Vogel , Hong T.M. Nguyen , Brett R. Hamilton , Phong K. Thai , Philipp Roesch , Franz-Georg Simon , Jochen F. Mueller","doi":"10.1016/j.hazl.2024.100134","DOIUrl":"10.1016/j.hazl.2024.100134","url":null,"abstract":"<div><div>An improved understanding of the distribution of per- and polyfluoroalkyl substances (PFAS) in PFAS-impacted concrete is important for risk management and decontamination of PFAS. This study incorporates µ-X-ray fluorescence (µ-XRF) and fluorine K-edge µ-X-ray absorption near-edge structure (µ-XANES) spectroscopy to gain non-destructive insights into PFAS distribution in the impacted concrete. The μ-XRF and μ-XANES spectroscopy provided additional details on the detection of PFAS, which were not detected by the desorption electrospray ionization (DESI) imaging method conducted previously. The shorter chain PFAS were found on the top part of the concrete core (0.5 cm), and longer chain PFAS were mostly at the bottom part of the concrete core (5 cm). The inorganic fluorine fraction was also detected, and it likely hampered the detection of organic fluorine such as PFAS in the concrete. Thus, this non-destructive technique is an complementary approach to detect PFAS in contaminated concrete.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100134"},"PeriodicalIF":6.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651892","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}

引用次数: 0

Per- and polyfluoroalkyl substances in feathers of waterbirds (Ardeidae) from Poyang Lake, China: Bioaccumulation, distribution, and environmental relevance 中国鄱阳湖水鸟羽毛中的全氟和多氟烷基物质：生物累积、分布和环境相关性

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-11-01 DOI: 10.1016/j.hazl.2024.100135

Nannan Wan , Bo Zhou , Limin Mo , Qiyu Wang , Shuai Liu , Miao Zhang , Yu Liu , Xiaojun Luo , Bixian Mai

{"title":"Per- and polyfluoroalkyl substances in feathers of waterbirds (Ardeidae) from Poyang Lake, China: Bioaccumulation, distribution, and environmental relevance","authors":"Nannan Wan , Bo Zhou , Limin Mo , Qiyu Wang , Shuai Liu , Miao Zhang , Yu Liu , Xiaojun Luo , Bixian Mai","doi":"10.1016/j.hazl.2024.100135","DOIUrl":"10.1016/j.hazl.2024.100135","url":null,"abstract":"<div><div>Studies on the distribution characteristics and environmental relevance of per- and polyfluoroalkyl substances (PFAS) in waterbird feathers are scarce. In the present study, the concentrations of twenty-three PFAS in the remiges, coverts, body, down, and tail feathers of three common species of Ardeidae (little egret, grey heron, and Chinese pond-heron) in Poyang Lake were investigated. The total PFAS concentrations in the pinna and scapus were 38 – 42 ng/g dry weight (dw) and 21 – 38 ng/g dw, respectively; long-chain C<sub>9–14</sub> perfluorocarboxylic acids were abundant in all feathers. Most PFAS accumulated in the pinna; however, perfluorohexane sulfonic acid and perfluorooctane sulfonamide were predominant in the scapus. The PFAS concentrations were higher in the tail and flight feathers than in the cover and body feathers. Furthermore, the concentrations of PFAS in waterbird feathers were comparable with those in fish and higher than those in benthic invertebrates, all of which originated from Poyang Lake. The PFAS profiles in feathers were significantly and positively correlated with those in fish (r > 0.71) and benthos (r > 0.43). These results suggest that waterbird feather is a suitable biomonitor of PFAS contamination in regional freshwater ecosystems.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100135"},"PeriodicalIF":6.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142651891","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}

引用次数: 0

Cyanide and chloroform detection through J-aggregates based aggregation induced emission probe with real sample applications 基于聚合诱导发射探针的氰化物和氯仿检测与实际样品应用

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-10-20 DOI: 10.1016/j.hazl.2024.100132

Aqsa Pervaiz , Sohail Anjum Shahzad , Mohammed A. Assiri , Tayyeba Javid , Hasher Irshad , Katrine Qvortrup

{"title":"Cyanide and chloroform detection through J-aggregates based aggregation induced emission probe with real sample applications","authors":"Aqsa Pervaiz , Sohail Anjum Shahzad , Mohammed A. Assiri , Tayyeba Javid , Hasher Irshad , Katrine Qvortrup","doi":"10.1016/j.hazl.2024.100132","DOIUrl":"10.1016/j.hazl.2024.100132","url":null,"abstract":"<div><div>Isopthalamide based probe <strong>DPI</strong> has been synthesized by an easy two-step substitution reaction. Unique fluorescence properties of probe <strong>DPI</strong> were exploited for sensing of CNˉ and chloroform. Various spectroscopic techniques such as NMR, LC-MS, SEM, DLS, UV-<em>Vis</em>. and fluorescence spectroscopy in combination with DFT studies were used to confirm efficient detection of CN‾ through a non-covalent interaction of cyanide with probe. Furthermore, probe showed fluorescence emission at 360 nm which shifted significantly to 415 nm upon addition of water exhibiting unique AIE characteristics and formation of desired J-aggregates. Mechanistically, CN‾ and chloroform were selectively detected through fluorescence quenching with 9 nM and 0.2 % v/v limit of detection (LOD), respectively. Photoinduced electron transfer (PET) was proven to be involved as a sensing mechanism. Moreover, <strong>DPI</strong> exhibited interesting solvatochromism properties. <strong>DPI</strong> was proven to be a highly sensitive probe which showed solid-state and vapor phase on-field detection of CN‾. Similar sensing behavior of <strong>DPI</strong> probe towards CN‾ was seen in food and water samples.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100132"},"PeriodicalIF":6.6,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529683","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}

引用次数: 0

Dissolved elemental mercury accumulation by freshwater phytoplankton species: A pilot study 淡水浮游植物物种的溶解元素汞积累：试点研究

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-10-05 DOI: 10.1016/j.hazl.2024.100128

João Pereira Santos , David Amouroux , Vera I. Slaveykova

{"title":"Dissolved elemental mercury accumulation by freshwater phytoplankton species: A pilot study","authors":"João Pereira Santos , David Amouroux , Vera I. Slaveykova","doi":"10.1016/j.hazl.2024.100128","DOIUrl":"10.1016/j.hazl.2024.100128","url":null,"abstract":"<div><div>Bioaccumulation of dissolved elemental mercury (DGM) by various organisms has been demonstrated, but no study has shown its uptake and sequestration by phytoplankton species. The present study aims to investigate the accumulation of mercury by phytoplankton species exposed to DGM. Diatoms (<em>Cyclotella meneghiniana</em> and <em>Navicula pelliculosa</em>) and green algae (<em>Chlamydomonas reinhardtii</em> and <em>Haematococcus pluvialis</em>) were exposed to constant high level of atmospheric gaseous Hg (∼7.7 µg m<sup>−3</sup>). Total mercury concentrations (THg) in the medium (dissolved fraction) and algae cells (cellular fraction) were determined using cold vapor atomic fluorescence spectroscopy. Results revealed a partitioning of Hg(0) between the atmosphere and phytoplankton cultures, with THg predominantly found in the algae cells. THg in the algae cultures decreased in the order: <em>C. reinhardtii</em> > <em>H. pluvialis</em> > <em>N. pelliculosa</em> > <em>C. meneghiniana</em>. However, the cellular concentration (mol cell<sup>−1</sup>) decreased in the order: <em>H. pluvialis</em> > <em>C. reinhardtii</em> > <em>C. meneghiniana</em> > <em>N. pelliculosa.</em> These results highlight species specificity in Hg accumulation upon exposure to DGM, further linked to the phytoplankton surface area. Our findings reveal for the first time that phytoplankton species significantly influence the partitioning of atmospheric Hg(0) in aquatic environments, with important implications for the understanding of the aquatic mercury cycle.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100128"},"PeriodicalIF":6.6,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417205","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}

引用次数: 0

Kinetic modeling and optimization of triclosan adsorption onto coconut shell activated carbon 椰壳活性炭对三氯生的吸附动力学建模与优化

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-10-05 DOI: 10.1016/j.hazl.2024.100131

Liane Carmen Ruszczyk , Gabriel Tochetto , Adriana Dervanoski , Gean Delise Leal Pasquali

引用次数: 0

First evidence of microplastic-associated extended-spectrum beta-lactamase (ESBL)-producing bacteria in the Red River Delta, Vietnam 越南红河三角洲与微塑料相关的产广谱β-内酰胺酶（ESBL）细菌的首次证据

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-10-02 DOI: 10.1016/j.hazl.2024.100129

Le Thanh Thao , Vu Thi Thu Hien , Nguyen Thuy Tram , Vo Hoai Hieu , Tony Gutierrez , Hoang Thi Thu Ha , Pham My Dung , Ngo Thi Thuy Huong

{"title":"First evidence of microplastic-associated extended-spectrum beta-lactamase (ESBL)-producing bacteria in the Red River Delta, Vietnam","authors":"Le Thanh Thao , Vu Thi Thu Hien , Nguyen Thuy Tram , Vo Hoai Hieu , Tony Gutierrez , Hoang Thi Thu Ha , Pham My Dung , Ngo Thi Thuy Huong","doi":"10.1016/j.hazl.2024.100129","DOIUrl":"10.1016/j.hazl.2024.100129","url":null,"abstract":"<div><div>This study investigated the relationship between MiPs, antibiotic resistance genes (ARGs), and water quality in the Red River Delta. MiPs were collected from water samples at four locations: Hanoi, Ha Nam, Nam Dinh, and Cat Ba Island. Bacteria isolated from MiPs and the surrounding water were analyzed for β-lactamase genes. Polyethylene terephthalate (PET) and polytridecanolactone (PTDL) exhibited notable correlations with coefficients with microbial abundance on MiPs. <em>Aeromonas</em> (99.2 % of all isolates) were the most common bacteria isolated from MiPs, with a fewer <em>Escherichia coli</em> (0.83 %). Of 207 bacterial strains isolated from microplastic, 23 (~11 % of total) were found to carry antibiotic resistance genes, mostly <em>bla</em><sub>TEM</sub> (13/23; 56.5 %), <em>bla</em><sub>SHV</sub> (9/23; 39.1 %) and <em>bla</em><sub>CTXM</sub>-9 (1/23; 4.3 %). All seven environmental factors measured were found to affect the distribution of ARGs and ARBs on MiP surfaces. Chlorophyll-a showed a strong positive correlation with ARB abundance, suggesting a potential link between primary productivity and bacterial colonization. This study is one of the first to report the association of MPs with antibiotic-resistant microbiota and genes. The presence of ARGs on MiPs in areas with high human population highlights the need for effective pollution management strategies to mitigate the risks associated with AMR.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100129"},"PeriodicalIF":6.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142529682","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}

引用次数: 0

The role of environmentally relevant concentrations of oxytetracycline in the emergence of antimicrobial resistance in Aeromonas hydrophila and Edwardsiella tarda 环境相关浓度的土霉素在嗜水气单胞菌和塔氏爱德华氏菌产生抗菌药耐药性中的作用

IF 6.6

Journal of hazardous materials letters Pub Date : 2024-10-02 DOI: 10.1016/j.hazl.2024.100130

Sutanu Karmakar , Kundan Kumar , T.J. Abraham , Saurav Kumar , Sanath Kumar , S.P. Shukla , Biswadeep Dey

{"title":"The role of environmentally relevant concentrations of oxytetracycline in the emergence of antimicrobial resistance in Aeromonas hydrophila and Edwardsiella tarda","authors":"Sutanu Karmakar , Kundan Kumar , T.J. Abraham , Saurav Kumar , Sanath Kumar , S.P. Shukla , Biswadeep Dey","doi":"10.1016/j.hazl.2024.100130","DOIUrl":"10.1016/j.hazl.2024.100130","url":null,"abstract":"<div><div>The study assessed the efficiency of <em>in-vitro</em> oxytetracycline (OTC) exposure on antimicrobial resistance (AMR) development in aquatic bacteria. <em>Aeromonas hydrophila</em> ATCC 49140 and <em>Edwardsiella tarda</em> ATCC 15947 were serially passaged to OTC for short and long durations. Short duration OTC exposure (30 min) at 0, 0.097 (0.25× Minimum Inhibitory Concentration: MIC), 0.195 (0.5× MIC) and 0.39 µg mL<sup>−1</sup> (1× MIC) elicited high mutation rate in <em>A. hydrophila</em> (10<sup>−4</sup>) and <em>E. tarda</em> (10<sup>−2</sup>). Serial passage exposure to inhibitory concentration of OTC (0.39 µg mL<sup>−1</sup>) reduced the zone of inhibition of nitrofurantoin (NIT) for <em>A. hydrophila</em> and of tetracycline, NIT and gentamicin for <em>E. tarda</em> to a clinically significant level. The upsurge in MICs of OTC was 4-folds (1.56 µg mL<sup>−1</sup>) and 8-folds (3.12 µg mL<sup>−1</sup>) in <em>A. hydrophila</em> and <em>E. tarda,</em> respectively during serial passage exposure to 0.097, 0.195 and 0.39 µg mL<sup>−1</sup> OTC. OTC exposure also increased the MICs of biocide triclosan (TCS) >4-folds (>100 µg mL<sup>−1</sup>) in <em>A. hydrophila</em> without any concentration-dependent pattern. This study shows that environmental OTC levels can drive bacterial mutation and AMR, potentially leading to cross-resistance to biocides like TCS. Reducing OTC use and improving disposal could help limit AMR spread through better antimicrobial management.</div></div>","PeriodicalId":93463,"journal":{"name":"Journal of hazardous materials letters","volume":"5 ","pages":"Article 100130"},"PeriodicalIF":6.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142417204","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}

引用次数: 0