Jack A. Brand*, Jake M. Martin*, Marcus Michelangeli, Eli S.J. Thoré, Natalia Sandoval-Herrera, Erin S. McCallum, Drew Szabo, Damien L. Callahan, Timothy D. Clark, Michael G. Bertram and Tomas Brodin,
{"title":"Advancing the Spatiotemporal Dimension of Wildlife–Pollution Interactions","authors":"Jack A. Brand*, Jake M. Martin*, Marcus Michelangeli, Eli S.J. Thoré, Natalia Sandoval-Herrera, Erin S. McCallum, Drew Szabo, Damien L. Callahan, Timothy D. Clark, Michael G. Bertram and Tomas Brodin, ","doi":"10.1021/acs.estlett.5c0004210.1021/acs.estlett.5c00042","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00042https://doi.org/10.1021/acs.estlett.5c00042","url":null,"abstract":"<p >Chemical pollution is one of the fastest-growing agents of global change. Numerous pollutants are known to disrupt animal behavior, alter ecological interactions, and shift evolutionary trajectories. Crucially, both chemical pollutants and individual organisms are nonrandomly distributed throughout the environment. Despite this fact, the current evidence for chemical-induced impacts on wildlife largely stems from tests that restrict organism movement and force homogeneous exposures. While such approaches have provided pivotal ecotoxicological insights, they overlook the dynamic spatiotemporal interactions that shape wildlife–pollution relationships in nature. Indeed, the seemingly simple notion that pollutants and animals move nonrandomly in the environment creates a complex of dynamic interactions, many of which have never been theoretically modeled or experimentally tested. Here, we conceptualize dynamic interactions between spatiotemporal variation in pollutants and organisms and highlight their ecological and evolutionary implications. We propose a three-pronged approach─integrating <i>in silico</i> modeling, laboratory experiments that allow movement, and field-based tracking of free-ranging animals─to bridge the gap between controlled ecotoxicological studies and real-world wildlife exposures. Advances in telemetry, remote sensing, and computational models provide the necessary tools to quantify these interactions, paving the way for a new era of ecotoxicology that accounts for spatiotemporal complexity.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 4","pages":"358–370 358–370"},"PeriodicalIF":8.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.5c00042","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Historical Redlining and Cumulative Environmental Impacts across the United States","authors":"Abas Shkembi*, and , Richard L. Neitzel, ","doi":"10.1021/acs.estlett.4c0111110.1021/acs.estlett.4c01111","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01111https://doi.org/10.1021/acs.estlett.4c01111","url":null,"abstract":"<p >Environmental regulation of single pollutants likely underprotects communities disproportionately burdened by multiple, overlapping environmental hazards. We investigate whether historically redlined neighborhoods across the US are exposed to cumulative environmental inequities today. We overlaid 1930s-40s Home Owners’ Loan Corporation maps of 202 US cities from the Mapping Inequality project onto EPA EJScreen data to analyze whether a collective, simultaneous, IQR increase in 12 environmental hazards (various air pollutants and toxic facility proximities) was significantly associated with higher odds of a neighborhood having been historically redlined (D-grade) using a boosted regression tree model. Controlling for neighborhood socioeconomic status, a collective, simultaneous, IQR increase in 12 environmental hazards was associated with 1.30 (95%CI: 1.17–1.46) times higher odds of a neighborhood having been historically redlined. Proximity to hazardous waste and wastewater discharge sites, traffic volume, and diesel particulate matter were the most pervasive environmental hazards in historically redlined neighborhoods. Cumulative environmental inequities were largest in the Western US by region and in Oklahoma City, Cincinnati, and Detroit by city. We find that historically redlined neighborhoods may be disproportionately impacted by cumulative environmental impacts. Environmental regulation of single pollutants may not be sufficiently protective of historically marginalized communities, which may help us understand why contemporary environmental health disparities persist today.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 4","pages":"377–382 377–382"},"PeriodicalIF":8.9,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c01111","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zongzhe He, Merle Plassmann, Ian T. Cousins* and Jonathan P. Benskin*,
{"title":"Correction to “A Novel Fluorine Mass Balance Method for Improved Characterization and Quantification of Extractable (Organo)fluorine in Drinking Water”","authors":"Zongzhe He, Merle Plassmann, Ian T. Cousins* and Jonathan P. Benskin*, ","doi":"10.1021/acs.estlett.5c0023310.1021/acs.estlett.5c00233","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00233https://doi.org/10.1021/acs.estlett.5c00233","url":null,"abstract":"","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 4","pages":"467 467"},"PeriodicalIF":8.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.5c00233","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xuri Wu, Liping Huang, Lina Zhou, Yan Fang and Feng Tan*,
{"title":"Predicting Protein Corona Formation on Polylactic Acid Microplastics Pre- and Post-Photoaging: The Importance of Optimal Imputation Methods","authors":"Xuri Wu, Liping Huang, Lina Zhou, Yan Fang and Feng Tan*, ","doi":"10.1021/acs.estlett.5c0018310.1021/acs.estlett.5c00183","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00183https://doi.org/10.1021/acs.estlett.5c00183","url":null,"abstract":"<p >Micro-nanoplastics (MNPs) enter biological systems, forming a protein corona (PC) by adsorbing proteins from bodily fluids, influencing their biological effects. Mass spectrometry-based proteomics characterizes PC composition, and recent advances have leveraged protein amino acid sequence-derived features to predict PC formation using a supervised random forest (RF) classifier. However, mass spectrometry often generates substantial missing values (MVs), which may hinder the model’s predictive performance and the understanding of protein–particle interactions. This study assessed the impact of 20 imputation methods on RF classifier performance in predicting human plasma PC formation on polylactic acid (PLA) and photoaged PLA microplastics (MPs), considering their rising ecological and health concerns. The results showed that five left-censored imputation methods (Zero, Half-min, Min, QRILC, GSimp) achieved the best performance, with high accuracy (0.80–0.82), AUC (0.78–0.84), precision (0.78–0.80), and recall (0.97–0.98). Protein spatial features, including secondary sheet structure (negative) and absolute solvent-accessible area (positive), were identified as key factors influencing protein adsorption onto MPs. Additionally, UV aging increased the importance ranking of features <i>frac_aa_S</i> and <i>fraction_exposed_exposed_S</i>, highlighting altered protein–MPs interactions, likely through hydrogen bonding and electrostatic forces. This study demonstrates the potential of left-censored imputation methods in enhancing RF classifier performance for predicting PC formation.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 4","pages":"413–418 413–418"},"PeriodicalIF":8.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Rallis Lougkovois, Georgios Gkotsis, Constantine Parinos*, Ioannis Hatzianestis, Maria-Christina Nika, Alexandra Pavlidou and Nikolaos Thomaidis*,
{"title":"Storm Daniel Extreme Flood Event in Thessaly, Greece: Assessing the Pollution Status of the Impacted Coastal Marine Areas through Extended Screening of Emerging Contaminants Using LC-TIMS-HRMS","authors":"Rallis Lougkovois, Georgios Gkotsis, Constantine Parinos*, Ioannis Hatzianestis, Maria-Christina Nika, Alexandra Pavlidou and Nikolaos Thomaidis*, ","doi":"10.1021/acs.estlett.5c0012210.1021/acs.estlett.5c00122","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00122https://doi.org/10.1021/acs.estlett.5c00122","url":null,"abstract":"<p >In this study, we investigate the pollution status in impacted seawaters and sediments of coastal areas in the region of Thessaly, central Greece, following the Storm Daniel extreme flood event in September 2023, a phenomenon classified as the deadliest Mediterranean tropical-like cyclone in recorded history and one of the costliest cyclones beyond the North Atlantic. For this, an ultra high-performance liquid-chromatography-based wide-scope target screening of more than 2300 LC-amenable emerging contaminants (ECs) was carried out utilizing the technique of TIMS-QTOF-MS. Our results highlight the fact that the extreme floodwater runoff resulted in an extensive transportation of terrestrial derived material from the impacted areas and a major transport of plant protection products, pharmaceuticals, including even illicit drugs, surfactants, industrial chemicals, and per- and polyfluorinated alkyl compounds (PFAS) at sea, as a result of the overflowing of local wastewater treatment plants and the destruction of agricultural, industrial, and port facilities. Overall, the phenomenon resulted in a major alteration of the classification of the determined ECs in seawaters and most importantly in sediments of the study area, with potential implications for their environmental quality status.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 4","pages":"432–439 432–439"},"PeriodicalIF":8.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.5c00122","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuna Kim, Ah-hyun Cho, Ye Eun Seo, Youglim Kho and Kyungho Choi*,
{"title":"Occurrence of Per- and Polyfluoroalkyl Substances (PFAS) in Potable Groundwater near Military Bases in South Korea","authors":"Yuna Kim, Ah-hyun Cho, Ye Eun Seo, Youglim Kho and Kyungho Choi*, ","doi":"10.1021/acs.estlett.5c0010510.1021/acs.estlett.5c00105","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00105https://doi.org/10.1021/acs.estlett.5c00105","url":null,"abstract":"<p >Aqueous film-forming foam (AFFF) has been identified as a major source of per- and polyfluoroalkyl substances (PFAS) contamination in the environment. We assessed the occurrence of major PFAS and their substitutes in the groundwater surrounding military bases in South Korea. Groundwater samples were collected from publicly accessible wells near four U.S. military installations in three cities between June and October 2023. In the wells closer to the military bases, more elevated PFAS levels were detected following the flow directions. The highest concentrations of PFOA (maximum of 125 ng/L), PFOS (maximum of 103.7 ng/L), and PFHxS (maximum of 127.8 ng/L) were observed in the wells near camps C and D. These levels are up to 222-fold higher than those detected in the wells far from the military bases, indicating that military activities could be linked to the elevated PFAS levels. Risks associated with groundwater consumption were deemed unacceptable, with several PFAS detected at levels exceeding the drinking water standards by orders of magnitude. Our observation underscores that groundwater in public wells near U.S. military bases in South Korea is heavily contaminated with PFAS and related chemicals at levels that could pose significant health risks, highlighting the urgent need for mitigation.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 4","pages":"440–446 440–446"},"PeriodicalIF":8.9,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143790728","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Corday R. Selden*, Kathrin Schilling, Anirban Basu, Jennifer Timm, Naomi Saunders and Nathan Yee,
{"title":"Amino Acid Complexation Fractionates Nickel Isotopes: Implications for Tracing Nickel Cycling in the Environment","authors":"Corday R. Selden*, Kathrin Schilling, Anirban Basu, Jennifer Timm, Naomi Saunders and Nathan Yee, ","doi":"10.1021/acs.estlett.4c0106010.1021/acs.estlett.4c01060","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01060https://doi.org/10.1021/acs.estlett.4c01060","url":null,"abstract":"<p >Nickel (Ni) is an essential cofactor in many proteins. Ni stable isotopes have been shown to undergo isotope fractionation in microorganisms and plants. However, the mechanisms driving this fractionation are poorly understood. Here, we present experimental data on Ni isotope fractionation during binding by common Ni-binding amino acids: glutamate (carboxylate side chain), histidine (imidazole side chain), and cysteine (sulfhydryl side chain). We used an equilibrium Donnan dialysis approach to separate free versus bound Ni and measured the isotopic composition of both pools via multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS). Our results reveal that the glutamate and cysteine favor heavy <sup>60</sup>Ni (Δ<sup>60/58</sup>Ni<sub>glutamate</sub> = +0.80 ± 0.08; Δ<sup>60/58</sup>Ni<sub>cysteine</sub> = +1.27 ± 0.08‰), while histidine causes little isotope shift (−0.12 ± 0.16‰). We then conducted experiments using a short peptide that is a structural analogue for acetyl-CoA synthetase and Ni-iron hydrogenase metal-binding sites. The peptide preferentially bound the heavy <sup>60</sup>Ni with a Δ<sup>60/58</sup>Ni<sub>peptide</sub> value of +0.74 ± 0.04‰. The Ni isotope effect associated with peptide binding corresponded directly to the fractionation expected based on the coordinating ligands. This work represents an important first step in understanding the mechanistic controls on Ni isotope fractionation and the drivers of Ni isotope fractionation in biological and environmental systems.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 3","pages":"283–288 283–288"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acs.estlett.4c01060","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Corday R Selden, Kathrin Schilling, Anirban Basu, Jennifer Timm, Naomi Saunders, Nathan Yee
{"title":"Amino Acid Complexation Fractionates Nickel Isotopes: Implications for Tracing Nickel Cycling in the Environment.","authors":"Corday R Selden, Kathrin Schilling, Anirban Basu, Jennifer Timm, Naomi Saunders, Nathan Yee","doi":"10.1021/acs.estlett.4c01060","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c01060","url":null,"abstract":"<p><p>Nickel (Ni) is an essential cofactor in many proteins. Ni stable isotopes have been shown to undergo isotope fractionation in microorganisms and plants. However, the mechanisms driving this fractionation are poorly understood. Here, we present experimental data on Ni isotope fractionation during binding by common Ni-binding amino acids: glutamate (carboxylate side chain), histidine (imidazole side chain), and cysteine (sulfhydryl side chain). We used an equilibrium Donnan dialysis approach to separate free versus bound Ni and measured the isotopic composition of both pools via multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS). Our results reveal that the glutamate and cysteine favor heavy <sup>60</sup>Ni (Δ<sup>60/58</sup>Ni<sub>glutamate</sub> = +0.80 ± 0.08; Δ<sup>60/58</sup>Ni<sub>cysteine</sub> = +1.27 ± 0.08‰), while histidine causes little isotope shift (-0.12 ± 0.16‰). We then conducted experiments using a short peptide that is a structural analogue for acetyl-CoA synthetase and Ni-iron hydrogenase metal-binding sites. The peptide preferentially bound the heavy <sup>60</sup>Ni with a Δ<sup>60/58</sup>Ni<sub>peptide</sub> value of +0.74 ± 0.04‰. The Ni isotope effect associated with peptide binding corresponded directly to the fractionation expected based on the coordinating ligands. This work represents an important first step in understanding the mechanistic controls on Ni isotope fractionation and the drivers of Ni isotope fractionation in biological and environmental systems.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 3","pages":"283-288"},"PeriodicalIF":8.9,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11905280/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143646352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kailun Chen, Jinglin Li, Li Lin, Weikai Qin, Yuchen Gao, Endian Hu, Jingwen Chang, Yukun Zhao and Jianguo Jiang*,
{"title":"Tripropylamine-Assisted Leaching/Regeneration-Mineralization Process for CO2 Sequestration with Concurrent High-Purity CaCO3 Production","authors":"Kailun Chen, Jinglin Li, Li Lin, Weikai Qin, Yuchen Gao, Endian Hu, Jingwen Chang, Yukun Zhao and Jianguo Jiang*, ","doi":"10.1021/acs.estlett.4c0096210.1021/acs.estlett.4c00962","DOIUrl":"https://doi.org/10.1021/acs.estlett.4c00962https://doi.org/10.1021/acs.estlett.4c00962","url":null,"abstract":"<p >The combined process of treating alkaline solid wastes and obtaining CO<sub>2</sub> sequestration has recently garnered significant attention. However, studies focusing on low chemical consumption alongside high-purity CaCO<sub>3</sub> production are still limited. Herein, a leaching/regeneration-mineralization process for CO<sub>2</sub> mineralization to concurrently produce CaCO<sub>3</sub> was proposed. First, selective leaching of Ca from municipal solid waste incineration fly ash (MSWI FA) was conducted with the assistance of protonated tripropylamine (TPA) at pH = 10.5, with a concentration of 23,500 mg/L. Concurrently, the protonated TPA was regenerated for subsequent mineralization, completing the mineralization kinetics within 30 min. Temperature had no significant effect on mineralization efficiency or product purity. As the temperature increased, the crystal form transitioned from vaterite to pure calcite. The amount of TPA added significantly influenced mineralization performance, exceeding the stoichiometric ratio allowed for nearly 100% of mineralization efficiency and promoted the transformation of the product’s crystal form toward pure vaterite. Based on experimental results and product characterization, a potential proton transfer-based leaching/regeneration-mineralization mechanism was proposed. Under optimal conditions, the CO<sub>2</sub> sequestration reached 77.5 g/kgFA, yielding 176 g/kgFA of pure CaCO<sub>3</sub>. This work offers a promising option for waste disposal, CO<sub>2</sub> sequestration, and CaCO<sub>3</sub> production in a reagent-saving manner.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 3","pages":"348–355 348–355"},"PeriodicalIF":8.9,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Boyan Xu, Zihao Li, Yuxin Yang, Guanlan Wu, Chengzhi Wang, Xiongpeng Tang, Yu Li, Zihao Wu, Qingxian Su, Xueqing Shi, Yue Yang, Rui Tong, Liang Wen* and How Yong Ng*,
{"title":"Evaluating and Advancing Large Language Models for Water Knowledge Tasks in Engineering and Research","authors":"Boyan Xu, Zihao Li, Yuxin Yang, Guanlan Wu, Chengzhi Wang, Xiongpeng Tang, Yu Li, Zihao Wu, Qingxian Su, Xueqing Shi, Yue Yang, Rui Tong, Liang Wen* and How Yong Ng*, ","doi":"10.1021/acs.estlett.5c0003810.1021/acs.estlett.5c00038","DOIUrl":"https://doi.org/10.1021/acs.estlett.5c00038https://doi.org/10.1021/acs.estlett.5c00038","url":null,"abstract":"<p >Although large language models (LLMs) have demonstrated significant value in numerous fields, there remains limited research on evaluating their performance or enhancing their capabilities within water science and technology. This study initially assessed the performance of eight foundational models (i.e., GPT-4, GPT-3.5, Gemini, GLM-4, ERNIE, QWEN, Llama3-8B, and Llama3-70B) on a wide range of water knowledge tasks in engineering and research by developing an evaluation suite called WaterER (i.e., 1043 tasks). GPT-4 was demonstrated to excel in diverse water knowledge tasks in engineering and research. Llama3-70B was best for Chinese engineering queries, while Chinese-oriented models outperformed GPT-3.5 in English engineering tasks. Gemini demonstrated specialized academic capabilities in wastewater treatment, environmental restoration, drinking water treatment, sanitation, anaerobic digestion, and contaminants. To further advance LLMs, we employed prompt engineering (i.e., five-shot learning) and fine-tuned open-sourced Llama3-8B into a specialized model, namely, WaterGPT. WaterGPT exhibited enhanced reasoning capabilities, outperforming Llama3-8B by over 135.4% on English engineering tasks and 18.8% on research tasks. Additionally, fine-tuning proved to be more reliable and effective than prompt engineering. Collectively, this study established various LLMs’ baseline performance in water sectors while highlighting the robust evaluation frameworks and augmentation techniques to ensure the effective and reliable use of LLMs.</p>","PeriodicalId":37,"journal":{"name":"Environmental Science & Technology Letters Environ.","volume":"12 3","pages":"289–296 289–296"},"PeriodicalIF":8.9,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143590741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}