ACS ES&T water最新文献_第4页

Assessing the Impact of Brahmapuram Landfill, Kochi, Kerala, India, on Groundwater Quality: A Physicochemical, Correlation, and Statistical Analysis Using WQI 评估印度喀拉拉邦高知Brahmapuram垃圾填埋场对地下水质量的影响：使用WQI进行物理化学、相关性和统计分析

IF 4.3

ACS ES&T water Pub Date : 2025-08-18 DOI: 10.1021/acsestwater.5c00470

Riya Joseph, Jeevan Mathew Tharayil, Prabhasankar V P, Kishore M S and Viswanath Parol*,

{"title":"Assessing the Impact of Brahmapuram Landfill, Kochi, Kerala, India, on Groundwater Quality: A Physicochemical, Correlation, and Statistical Analysis Using WQI","authors":"Riya Joseph, Jeevan Mathew Tharayil, Prabhasankar V P, Kishore M S and Viswanath Parol*, ","doi":"10.1021/acsestwater.5c00470","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00470","url":null,"abstract":"Groundwater contamination from industrial effluents, agricultural runoff, and landfill leachate threatens water quality and public health. Aligning with United Nations Sustainable Development Goal 6 (UN SDG 6) on clean water and sanitation, this study evaluates groundwater quality in and around the Brahmapuram landfill (Kochi, Kerala, India) with respect to Indian and World Health Organization (WHO) standards. Comprehensive physicochemical analysis, water quality index (WQI) assessment, correlation matrix, and statistical evaluations were conducted to analyze key water quality parameters. WQI analysis indicated that 40% of the samples exhibited poor to very poor quality, rendering them unsuitable for direct consumption without treatment. Spatial distribution maps for pH, temperature, color, total alkalinity, total hardness (TH), chloride, sulfate, dissolved oxygen, biochemical oxygen demand (BOD), and turbidity were developed using QGIS, contamination hotspots were identified. A strong correlation between TH and sulfate (r = 0.83) suggested common contamination sources. Significant variations in chloride and hardness levels were also observed. The findings highlight the urgent need for leachate control, sustainable water management, and stricter landfill regulations, particularly following incidents such as the Brahmapuram landfill fire outbreak. Beyond its regional significance, this study provides a replicable framework for assessing landfill-induced groundwater pollution and supports evidence-based governance.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"5377–5386"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036330","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

Determination of the Permanganate Index in High-Chlorine Water Bodies 高氯水体高锰酸盐指数的测定

IF 4.3

ACS ES&T water Pub Date : 2025-08-18 DOI: 10.1021/acsestwater.5c00498

Lin Wang, Jingjing Guo, Jing Li, Shuwei Pei, Yu Zhang, Zhengke Li, Yalcun Turlana, Xiaohong Zhou and Ruozhen Yu*,

{"title":"Determination of the Permanganate Index in High-Chlorine Water Bodies","authors":"Lin Wang, Jingjing Guo, Jing Li, Shuwei Pei, Yu Zhang, Zhengke Li, Yalcun Turlana, Xiaohong Zhou and Ruozhen Yu*, ","doi":"10.1021/acsestwater.5c00498","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00498","url":null,"abstract":"Despite the significant demand, accurate determination of the permanganate index in high-chloride bodies of water remains extremely limited. This study introduces an iodine-thiosulfate method that effectively eliminates the interference of chloride ions in the permanganate index determination. In this method, organic and inorganic substances in a water sample are oxidized with KMnO4 in an alkaline medium to mitigate chloride ion interference. To further minimize this interference during back-titration, the remaining KMnO4 is reduced using KI under adjusted acidic conditions. The released iodine is then titrated with standardized Na2S2O3 until the starch–iodine complex’s blue–black color disappears. The iodine-thiosulfate method demonstrated a method detection limit of 0.4 mg L–1 (n = 7) and a corresponding interlaboratory quantification limit of 1.6 mg L–1 in water samples with chloride concentrations of 5000 mg L–1. The method’s precision and accuracy ranged from 1.4% to 6.7% and −1.0% to 5.0%, respectively. The relative error in permanganate index determination remained below 20% even at chloride concentrations up to 60 g L–1, whereas the conventional oxalate-permanganate method exceeded a 20% relative error once the chloride concentration reached 10 g L–1 or higher. The sufficiently low detection limit along with excellent repeatability (intralaboratory precision), reproducibility (interlaboratory precision), and accuracy confirms its practical feasibility for routine analysis.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"5395–5404"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036381","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

Comparative Evaluation of Hollow-Fiber Ultrafiltration and Syringe Microfiltration As Efficient Concentration Methods for Targeted and Comprehensive Detection of Bacterial, Viral, and Animal DNA in Water 中空纤维超滤和注射器微滤作为水中细菌、病毒和动物DNA靶向综合检测的高效浓缩方法的比较评价

IF 4.3

ACS ES&T water Pub Date : 2025-08-18 DOI: 10.1021/acsestwater.5c00385

Yuki Takamatsu, Seiya Hanamoto, Keisuke Kuroda, Kenshi Sankoda, Shuta Matsuoka and Akihiko Hata*,

{"title":"Comparative Evaluation of Hollow-Fiber Ultrafiltration and Syringe Microfiltration As Efficient Concentration Methods for Targeted and Comprehensive Detection of Bacterial, Viral, and Animal DNA in Water","authors":"Yuki Takamatsu, Seiya Hanamoto, Keisuke Kuroda, Kenshi Sankoda, Shuta Matsuoka and Akihiko Hata*, ","doi":"10.1021/acsestwater.5c00385","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00385","url":null,"abstract":"Environmental waters contain diverse microbial and macrobial DNA, necessitating methods capable of efficiently concentrating various organisms, cells, and free DNA. This study compared hollow fiber ultrafiltration (HFUF) and syringe microfiltration (MF) for recovering microbial and macrobial cells and DNA from surface water and stormwater runoff. Performance was assessed by quantifying a spiked virus (phiX174), naturally occurring E. coli, bacterial 16S rRNA genes, and crAssphage, along with metabarcoding of mitochondrial DNA and full-length 16S rRNA genes. The syringe MF method showed higher recovery and quantitative accuracy for bacterial and viral targets but suffered from membrane clogging, reducing DNA extraction efficiency. HFUF had higher sensitivity for low-abundance targets, particularly E. coli, due to its greater concentration factor. However, it was more prone to PCR inhibition, especially for long-fragment targets. Metabarcoding demonstrated that both methods captured microbial and macrobial community composition, although HFUF detected more fish DNA and a slightly greater number of bacterial genera. Overall, syringe MF is more suitable for accurate quantification, while HFUF is better for detecting low-abundance and small targets. The choice of method should be based on study objectives, target organisms, and trade-offs among recovery efficiency, DNA extraction, and PCR performance.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"5265–5274"},"PeriodicalIF":4.3,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036331","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

Study of the Synergistic Dynamics of Labile Phosphorus and Iron at the Water-Sediment Boundary of an Inland Reservoir 内陆水库水沙边界活性磷和活性铁协同动力学研究

IF 4.3

ACS ES&T water Pub Date : 2025-08-17 DOI: 10.1021/acsestwater.5c00341

Yiping Li*, Robert Bofah-Buoh, Eyram Norgbey, Ya Zhu, Patrick Banahene and Linda Akosua Nuamah,

{"title":"Study of the Synergistic Dynamics of Labile Phosphorus and Iron at the Water-Sediment Boundary of an Inland Reservoir","authors":"Yiping Li*, Robert Bofah-Buoh, Eyram Norgbey, Ya Zhu, Patrick Banahene and Linda Akosua Nuamah, ","doi":"10.1021/acsestwater.5c00341","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00341","url":null,"abstract":"ZrO-Chelex diffusion gradient in thin film (DGT) probes and high-resolution peepers were used in this study for the synergy between phosphorus (P) and iron (Fe) at the water-sediment boundary (WSB) of the reservoir. A negative oxidation–reduction potential (ORP) across all sampling areas (SA) was observed, indicating hypoxic bottom waters. Positive flux values of Fe (41.75–63.50 mg/m2/day) and P (0.04–0.39 mg/m2/day) indicate their release from sediments into the overlying water column. A strong positive Pearson correlation existed between labile Fe and P across all sampling areas (p < 0.05), highlighting their coupled mobilization through reductive dissolution of iron oxyhydroxides (FeOOH). Spatial variations in the labile Fe:P slope revealed notable variations in P corelease efficiency, signifying how sediment iron dynamics impact P mobility. Strong correlation between dissolved organic carbon (DOC) and both labile Fe and P (0.7 ≤ r ≤ 0.9 for Fe-DOC and 0.6 ≤ r ≤ 0.9 for P-DOC, p < 0.05) indicated that organic carbon was a key driver of Fe and P mobilization. Ca2+ concentrations influenced P mobility by facilitating competing immobilization pathways, revealed by its negative correlation with P flux (r = −0.6). These findings provide a comprehensive framework for predicting nutrient fluxes and guiding water quality strategies in similar monsoonal ecosystems prone to black water formation.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"5221–5232"},"PeriodicalIF":4.3,"publicationDate":"2025-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036328","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

Carbon Sequestration by Microalgae and Engineering of Microalgal Cells by CRISPR Technology for Efficient CO2 Capture for Carbon Neutral Bioproducts 微藻固碳及利用CRISPR技术对微藻细胞进行工程改造，用于碳中性生物制品的高效二氧化碳捕获

IF 4.3

ACS ES&T water Pub Date : 2025-08-15 DOI: 10.1021/acsestwater.5c00517

Sabeela Beevi Ummalyma*, Theivanayagam Maharajan, B. R. Sreelekshmy and Kaarunya Eswaran,

{"title":"Carbon Sequestration by Microalgae and Engineering of Microalgal Cells by CRISPR Technology for Efficient CO2 Capture for Carbon Neutral Bioproducts","authors":"Sabeela Beevi Ummalyma*, Theivanayagam Maharajan, B. R. Sreelekshmy and Kaarunya Eswaran, ","doi":"10.1021/acsestwater.5c00517","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00517","url":null,"abstract":"Excess CO2 emissions cause global warming, a catastrophic effect that leads to ocean acidification, agricultural losses, droughts, disrupted rainfall, and emerging diseases. This ultimately impacts biodiversity, human health, and environmental sustainability. Hence, it is essential to reduce CO2 emissions to keep the planet cooler. Several countries set a carbon-neutral target of 50% by 2030 and net zero by 2070. To achieve carbon neutrality, several research communities and policymakers have developed innovative and economic solutions for carbon capture and sequestration. Biological carbon sequestration offers a more eco-friendly and sustainable approach to carbon capture than conventional methods. Microalgae act as potent biocatalysts, capturing CO2 through photosynthesis and producing biomass. The produced biomass serves as a resource for producing carbon-neutral bioproducts. This Review focuses on advances in microalgae-mediated carbon capture, sequestration, various microalgae cultivation strategies, and underlying mechanisms. At the end of the paper, various CRISPR-Cas-based gene-editing strategies aimed at enhancing photosynthesis are discussed, with a focus on key enzymes involved in efficient carbon capture and sequestration. Additionally, we highlight how the biomass generated through carbon fixation can be utilized for diverse bioproducts and conclude by addressing the future research priorities needed to optimize microalgae-based carbon sequestration for economically and environmentally sustainable bioprocesses.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"4969–4984"},"PeriodicalIF":4.3,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036225","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 New Strategy for Tunable Pore Size Polyamide Nanofiltration Membranes during the Interfacial Polymerization by the Dynamic Hydrophilic Site Resistance Balance of 3-Aminobenzenesulfonamide in the Aqueous Phase 基于3-氨基苯磺酰胺在水相中动态亲水性位电阻平衡的界面聚合过程中可调孔径聚酰胺纳滤膜的新策略

IF 4.3

ACS ES&T water Pub Date : 2025-08-13 DOI: 10.1021/acsestwater.5c00737

Yuqian Yang, Tiansheng Gao, Wenzhong Ma*, Haicun Yang, Qiuyan Bi, Jing Zhong and Hideto Matsuyama,

{"title":"A New Strategy for Tunable Pore Size Polyamide Nanofiltration Membranes during the Interfacial Polymerization by the Dynamic Hydrophilic Site Resistance Balance of 3-Aminobenzenesulfonamide in the Aqueous Phase","authors":"Yuqian Yang, Tiansheng Gao, Wenzhong Ma*, Haicun Yang, Qiuyan Bi, Jing Zhong and Hideto Matsuyama, ","doi":"10.1021/acsestwater.5c00737","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00737","url":null,"abstract":"The growing demand for lithium-based materials stems predominantly from the rapid proliferation of renewable energy technologies. Given the growing demand for lithium, extracting the metal from salt lake brines has gained significant research attention. While positively charged nanofiltration (NF) membranes exhibit promising Mg2+/Li+ separation efficacy, the interfacial polymerization technique remains constrained by the inherent permeability-selectivity trade-off. This study optimized the microstructure and surface properties of the polyamide (PA) separation layer by regulating the additional amount of 3-aminobenzenesulfonamide (ABSA) based on the principle of hydrophilic steric dynamic equilibrium. The best-performing membrane, with 0.05 ABSA added, was the polyethylenimine (PEI)/trimesoyl chloride (TMC) NF membrane sample (PEI/ABSA-0.05-TMC), which retained 93.7% of Mg2+ and 28.4% of Li+. Compared to the PEI-TMC NF membrane without ABSA addition, water flux was increased from 12.5 L·m–2·h–1·bar–1 to 17.7 L·m–2·h–1·bar–1, MWCO was adjusted from 584 to 487 Da, and the corresponding separating factor of SLi,Mg increased from 8.51 to 13.3. Throughout prolonged experimental trials, the PEI/ABSA-0.05-TMC NF membrane demonstrated sustained separation stability. This work establishes a robust framework for optimizing NF membranes, providing a strategic pathway toward Mg2+/Li+ separation technologies.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"5739–5748"},"PeriodicalIF":4.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036611","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

Speciation of Aqueous Iron and Arsenic for Assessing Mechanisms of Arsenic Attenuation in Groundwater 水中铁和砷形态对地下水中砷衰减机制的评价

IF 4.3

ACS ES&T water Pub Date : 2025-08-13 DOI: 10.1021/acsestwater.5c00566

Tao Li*,

{"title":"Speciation of Aqueous Iron and Arsenic for Assessing Mechanisms of Arsenic Attenuation in Groundwater","authors":"Tao Li*, ","doi":"10.1021/acsestwater.5c00566","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00566","url":null,"abstract":"Groundwater pollution by natural arsenic can be induced by the reduction of subsurface iron oxides that host arsenic. Characterization of the chemical species of arsenic and iron in groundwater is critical to diagnosing the cause of arsenic mobilization and assessing the potential for downgradient attenuation. A streamlined plan is reported to preserve and analyze aqueous Fe(II), Fe(III), As(III), and As(V). In succinic acid, both Fe(II) and As(III) are stable for 9 days, allowing adequate time for the analyses. The revised Fe speciation is based on the o-phenanthroline (o-phen) method, with limits of quantitation (LOQ) of 0.2 and 0.07 μM for Fe(II) and Fe(III), respectively. This method can tolerate 100× of Ca2+, 100× of Mg2+, 100× of Mn2+, and 500× of F–. The revised As speciation is based on the analysis of As(V) with mixed mode LC-ESI-MS. The LOQ for As(V) is 0.13 μM. A generic protocol has been developed to prepare synthetic groundwater with the desired compositions of 11 major ions. These methods have been applied to characterize the oxidation and sequestration of Fe(II) and As(III) in synthetic groundwater when exposed to air over 16 h.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"5523–5530"},"PeriodicalIF":4.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036633","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

Correction to “Occurrence, Temporal Variation (2010–2018), Distribution, and Source Appointment of Per- and Polyfluoroalkyl Substances (PFAS) in Mollusks from the Bohai Sea, China” 对“中国渤海软体动物中全氟烷基和多氟烷基物质（PFAS）的发生、时间变化（2010-2018）、分布和来源确定”的更正

IF 4.3

ACS ES&T water Pub Date : 2025-08-13 DOI: 10.1021/acsestwater.5c00821

Lingyi Meng, Yao Lu, Yingjun Wang, Xindong Ma, Juan Li, Jitao Lv*, Yawei Wang and Guibin Jiang,

引用次数: 0

Enhanced Denitrification and Microbial Mechanism in Secondary Effluent Treatment Using Combined Iron–Carbon Microelectrolysis and Deep Bed Filters 铁炭微电解与深床滤池联合处理二级出水的强化反硝化及微生物机理

IF 4.3

ACS ES&T water Pub Date : 2025-08-13 DOI: 10.1021/acsestwater.5c00653

Zhihao Zheng, Kai Cao, Guorun Zhou, Shuai Zhang, Xingdong Teng and Xiao Huang*,

{"title":"Enhanced Denitrification and Microbial Mechanism in Secondary Effluent Treatment Using Combined Iron–Carbon Microelectrolysis and Deep Bed Filters","authors":"Zhihao Zheng, Kai Cao, Guorun Zhou, Shuai Zhang, Xingdong Teng and Xiao Huang*, ","doi":"10.1021/acsestwater.5c00653","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00653","url":null,"abstract":"This study developed an innovative system coupling iron–carbon microelectrolysis with a deep bed denitrification filter (DBDF) for the advanced treatment of secondary effluent. The key innovation lay in revealing the synergistic pollutant removal mechanisms through microbial community succession and metabolism pathway enhancement. Results showed that the effluent concentrations of total nitrogen, nitrate, and total phosphorus were stabilized below 2.5, 0.55, and 0.25 mg/L, and 41.05% of chemical oxygen demand was removed. Microorganisms in the microelectrolysis column (MEC) and DBDF all varied with the change of reactors height. The dominant genera in the MEC were Dechloromonas, Dechlorosoma, and uncultured_bacterium_f_Rhodocyclaceae, and the abundance of NO3– dependent Fe oxidizing Dechloromonas reached 20.15% at sampling point I. Acinetobacter, Hydrogenophaga, uncultured_bacterium_f_Rhodocyclaceae, Flavobacterium, and Thauera were the dominant genera in the DBDF. The pathways of N metabolic, carbohydrate metabolism, and energy metabolism all maintained high abundance in the combined process.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"5648–5660"},"PeriodicalIF":4.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036614","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

Microbiological and Chemical Contaminants in Single-Use and Multipackage Bottled Water: Inter- and Intra-analyses of 26 Bottled Water Brands in the USA 一次性和多包装瓶装水中的微生物和化学污染物：美国26个瓶装水品牌的内部和内部分析

IF 4.3

ACS ES&T water Pub Date : 2025-08-13 DOI: 10.1021/acsestwater.5c00536

Md Rasheduzzaman, Breanna Lytton, Emily Wilcox, Arpita Das, Margaret Wirth, Alvaro Hurtado, Leigh-Anne Krometis and Alasdair Cohen*,

{"title":"Microbiological and Chemical Contaminants in Single-Use and Multipackage Bottled Water: Inter- and Intra-analyses of 26 Bottled Water Brands in the USA","authors":"Md Rasheduzzaman, Breanna Lytton, Emily Wilcox, Arpita Das, Margaret Wirth, Alvaro Hurtado, Leigh-Anne Krometis and Alasdair Cohen*, ","doi":"10.1021/acsestwater.5c00536","DOIUrl":"https://doi.org/10.1021/acsestwater.5c00536","url":null,"abstract":"Relatively few published studies have assessed the microbiological or chemical quality of bottled water in the USA. We purchased all single and multipackage bottled water sold in grocery and retail stores in one county in Virginia. 107 samples, across 26 brands, were tested for pH, conductivity, dissolved oxygen, total coliform, E. coli, nitrate, sulfate, free chlorine, total trihalomethanes (THMs, a component of disinfection byproducts), fluoride, and heavy metals. 64.5% (n = 69) of samples were purified water and 35.5% (n = 38) were spring water. Contaminant concentrations were higher overall in spring water samples. Total coliforms and E. coli were not detected in any samples. 1.4% (n = 1) of purified bottled water samples exceeded regulatory standards for THM (80 ppb), and 7.2% (n = 5) and 10.5% (n = 4) of purified and spring samples exceeded 1/2 the THM standard, respectively. No spring water samples exceeded standards for heavy metals, but one purified bottled water sample exceeded the standard for cadmium. We observed considerable within-brand variability in concentrations for a number of parameters including THMs, calcium, silicon, and strontium. This is the first study we are aware of to analyze contaminant variability within bottled water brands. Our results indicate that monitoring and reporting requirements for bottled water should be improved.Almost all tested bottled water samples complied with regulatory standards; however, a few did not, and we observed considerable within-brand variability for some parameters.","PeriodicalId":93847,"journal":{"name":"ACS ES&T water","volume":"5 9","pages":"5471–5481"},"PeriodicalIF":4.3,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsestwater.5c00536","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145036634","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