Environmental Chemistry最新文献

{"title":"Validation of a calibration model able to estimate the concentration of pesticides in an alpine stream through passive sampling (POCIS) monitoring","authors":"Anna Casari, Loris Tonidandel, Guido Zolezzi, Alberto Bellin, Paolo Negri, Alice Barbero, Roberto Larcher","doi":"10.1071/en23052","DOIUrl":"https://doi.org/10.1071/en23052","url":null,"abstract":"Environmental context Pesticides and other contaminants released by agricultural activities negatively impact aquatic biota and water quality, but are not always measured. The Polar Organic Chemical Integrative Sampler (POCIS) is among the most suitable tools for identifying pesticides and other organic compounds in water bodies. However, determination of a mean concentration (over the duration of the deployment) is still a significant challenge, which is addressed in the present work using field observations and a computational model.Rationale The Polar Organic Chemical Integrative Sampler (POCIS) is a passive sampler composed of a receiving phase, Oasis HLB, enclosed between two polyethersulfone (PES) membranes. It is used for monitoring organic compounds in surface water and in groundwater. The measurement of pesticide concentrations by passive samplers in streams still represents an open challenge, which limits the samplers’ use in environmental monitoring of the quality status of water bodies in accordance with the EU Water Framework Directive.Methodology We addressed these limitations by calibrating a POCIS with concentration measurements performed on samples collected by means of an automatic sampler from the same section of a small alpine river where a passive sampler was deployed. In the majority of published studies, the analytes were extracted only from the receiving phase, but recent works show that some compounds were also adsorbed by the PES membrane, suggesting the importance of extracting the analytes from both the phase and the membrane.Results The POCIS was calibrated for 31 compounds, by a comparison between the total amount of pesticides adsorbed by POCIS (Ms) and the time-weighted average concentration (TWAc) obtained from several grab samples, and by estimation of the sampling rate (Rs), which allows linking the Ms with the TWAc over time. The data showed an increasing Rs trend with hydrophobicity for the most hydrophobic and hydrophilic compounds, while compounds with 1.5 ≤ log Kow ≤ 3.5 assumed a value of Rs independent of log Kow. The contribution of PES membranes allows expansion of the calibration of Rs to the most hydrophobic compounds and allows monitoring of pesticides that would hardly have been detected if they were extracted only from the Oasis HLB phase, such as fluazinam.Discussion The calibration was then verified on the same stream and the model extended to a different sampling site; in both cases, the calibration allowed estimation of a value of TWAc that fits with the reality within a factor of 5, and in the majority of cases within a factor of 2. If this level of accuracy is accepted, the Rs reported here can be used to estimate TWAc from sampling with POCIS.","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Cellular uptake and biotransformation of arsenate by freshwater phytoplankton under salinity gradient revealed by single-cell ICP-MS and CT-HG-AAS","authors":"Md Shah Alam, Shogo Fujisawa, Masahiko Zuka, Y. Zai, A. Mashio, I. Rahman, K. H. Wong, Hiroshi Hasegawa","doi":"10.1071/en23041","DOIUrl":"https://doi.org/10.1071/en23041","url":null,"abstract":"","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"74 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76601356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Arsenic speciation of commonly eaten mushrooms from central Europe","authors":"Martin Walenta, S. Braeuer, W. Goessler","doi":"10.1071/en22069","DOIUrl":"https://doi.org/10.1071/en22069","url":null,"abstract":"","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"41 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73892974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Iron dissolution and speciation from combustion particles under environmentally relevant conditions","authors":"Cecily Szady, Grace Picarillo, E. J. Davis, Donata Drapanauskaitė, Kristina Bunevičienė, J. Baltrusaitis, Juan G. Navea","doi":"10.1071/en23022","DOIUrl":"https://doi.org/10.1071/en23022","url":null,"abstract":"","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"69 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76165799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Determination of inorganic As, DMA and MMA in marine and terrestrial tissue samples: a consensus extraction approach","authors":"Z. Gajdosechova, P. Grinberg, Kevin M. Kubachka, M. Wolle, A. Raab, J. Feldmann, Rebecca Sim, Á. Pétursdóttir, Tomáš Matoušek, S. Musil, Ben J. Wozniak, Stephen D. Springer, N. Sadiq, H. Gurleyuk, C. H. Palmer, Indumathi Pihillagawa Gedara, Z. Mester","doi":"10.1071/en23006","DOIUrl":"https://doi.org/10.1071/en23006","url":null,"abstract":"","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"36 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75130862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"The Chemistry of Terrestrial Cold Environments","authors":"Jing Ming, A. Spolaor","doi":"10.1071/en22109","DOIUrl":"https://doi.org/10.1071/en22109","url":null,"abstract":"","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"7 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2022-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84576953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Examining the utility of existing chemical hazard paradigms to predict future global-scale environmental impacts from emerging chemicals","authors":"K. Bowles, J. Beyer","doi":"10.1071/en22046","DOIUrl":"https://doi.org/10.1071/en22046","url":null,"abstract":"Environmental context In previous instances of global impacts from chemicals, there were significant gaps between the onset of use and observations that triggered management. The lessons of the past have informed the development of strong paradigms for chemical management, but at some point, major impacts will again emerge, not covered by these paradigms. Holistic observation of the environment and collaborative reporting are needed to identify signals of future major issues. Abstract Increasing concern over per- and polyfluoroalkyl substances (PFAS) in the environment, in the last decade, has sparked an interest in emerging chemicals more broadly, leading to the development or strengthening of many useful programs for understanding and prioritising environmental hazards and risks for chemicals. While important and useful, such efforts mostly rely on comparing chemical properties with paradigms generated from previous environmental issues. The lessons of the past demonstrate that, at some point, major challenges to our existing paradigms will eventuate. Key to addressing these challenges is our ability for early identification of ‘blind spots’ not covered by our existing paradigms. Furthermore, if we only look for gross observable changes in the environment, we will only ever be able to respond with reactive measures. We suggest that while various relevant monitoring programs are in place and have been proposed, encouraging those processes to look beyond existing hazard paradigms and look for more subtle environmental signals will improve the ability to respond proactively when harm is still limited.","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"2 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81763620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Foreword to the tribute issue for Dr Graeme Batley","authors":"S. Apte","doi":"10.1071/en22105","DOIUrl":"https://doi.org/10.1071/en22105","url":null,"abstract":"Environmental context This special issue is a tribute to Graeme Batley’s career and his many contributions to the field of environmental chemistry.","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"2 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83671923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"Investigation of diffusion and binding properties of uranium in the diffusive gradients in thin-films technique","authors":"Hao Cheng, Yanying Li, H. Pouran, W. Davison, Hao Zhang","doi":"10.1071/en22078","DOIUrl":"https://doi.org/10.1071/en22078","url":null,"abstract":"Environmental context Monitoring uranium concentrations and speciation in aquatic systems is important for pollution control and for environmental studies. Although an in situ speciation technique based on diffusion and uptake of uranium has been developed, known as DGT, there were uncertainties over some parameters affecting the accuracy of the measurements. This study resolved those uncertainties by investigating diffusion and binding properties of uranium in DGT and provided confidence in monitoring uranium in the environment. Rationale Diffusive gradients in thin-films (DGT) ha been used for uranium speciation measurements since 2006, but interpretational difficulties have arisen due to uncertainties in the pH dependence of U diffusion coefficients (D) within the diffusive gel. This work tested the hypothesis that differences in measured D values between laboratories are due to methodological artifacts. Methodology The properties of uranium binding and diffusion of U within DGT were systematically investigated at different conditions between pH 3–8 and ionic strength from 1 to 500 mmol L−1. Previous uncertainties were attributed to loss of U by adsorption within the diffusion cell, identified by mass balance calculations, and a binding efficiency dependent on the type of binding gel. Results The diffusion coefficient in an agarose cross-linked polyacrylamide gel measured using Metsorb DGT of 5.26 ± 0.17 × 10−6 cm2 s−1 agreed well with both values obtained using a pre-conditioned diffusion cell (< 7% difference) and by modelling. The binding efficiencies for Chelex DGT (BChelex = 0.86–0.89) and Fe-oxide DGT (BFe-oxide = 0.64 were smaller than for Metsorb DGT (BMetsorb = 1). No significant differences were found for BChelex at different pH. Discussion This work demonstrated that the diffusion coefficient of uranium is independent of pH and the binding gel used, provided the binding efficiency (B) is taken into account. These findings indicate that DGT equipped with either Metsorb or Chelex binding gels should be capable of measuring U for a wide range of environmental conditions provided the appropriate diffusion coefficients and binding efficiencies are used.","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"120 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2022-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81783699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

{"title":"A review of the potential risks associated with mercury in subsea oil and gas pipelines in Australia","authors":"F. Gissi, Darren J. Koppel, Alexandria N. Boyd, Fenny Kho, Rebecca von Hellfeld, Stuart Higgins, S. Apte, T. Cresswell","doi":"10.1071/en22048","DOIUrl":"https://doi.org/10.1071/en22048","url":null,"abstract":"Environmental context The oil and gas industry has a significant liability in decommissioning offshore infrastructure. Following decommissioning, subsea pipelines could be left on the seabed to provide artificial reefs. Mercury is a contaminant of concern which could remain within pipelines. There are gaps in our knowledge on how mercury moves through the marine environment. We review the current science and identify future research needs to understand potential impacts from mercury in subsea pipelines which will better inform decommissioning activities globally. Abstract In the coming years, the oil and gas industry will have a significant liability in decommissioning offshore infrastructure such as subsea pipelines. The policies around decommissioning vary depending on regional policies and laws. In Australia, the ‘base case’ for decommissioning is removal of all property and the plugging and abandonment of wells in line with the Offshore Petroleum and Greenhouse Gas Storage (OPGGS) Act 2006. Options other than complete removal may be considered where the titleholder can demonstrate that the alternative decommissioning activity delivers equal or better environmental outcomes compared to complete removal and meets all requirements under the OPGGS Act and regulations. Recent research has demonstrated that decommissioning in situ can have significant environmental benefits by forming artificial reefs, increasing marine biodiversity, and providing a potential fishery location. An issue, which has been given less attention, is around contaminants remaining within decommissioned infrastructure and their potential risks to the marine environment. Mercury is a contaminant of concern known to be present in some oil and gas pipelines, but the potential long-term impacts on marine ecosystems are poorly understood. We present a synthesis of information on mercury cycling in the marine environment including key drivers of methylation in sediments and ocean waters, existing models to predict methylmercury concentrations in sediments, and toxicological effects to marine biota. We discuss the applicability of existing water and sediment quality guidelines, and the associated risk assessment frameworks to decommissioning offshore infrastructure contaminated with mercury. Globally, research is needed to provide a comprehensive risk assessment framework for offshore infrastructure decommissioning. We recommend future areas of research to improve our understanding of the potential risks associated with mercury in subsea oil and gas pipelines.","PeriodicalId":11714,"journal":{"name":"Environmental Chemistry","volume":"32 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76335892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}