Pub Date : 2025-06-30DOI: 10.1021/acsmeasuresciau.5c00055
Xinyi Chen, Qing-Long Fu* and Ziyong Sun,
The drying treatment of dissolved organic matter (DOM) eluate was often used to prepare DOM solutions for chemodiversity analysis using Fourier transform ion cyclotron resonance mass spectrometry. However, the effects of drying treatment on the chemodiversity of DOM have not been thoroughly investigated. In this study, vacuum freeze-drying and vacuum centrifuge drying resulted in approximately half and 10% loss of DOM mass loss, respectively. Although the overall values of molecular functional diversity indices and main DOM fractions were insignificantly affected by both drying treatments, the Cl-containing molecules (Cl-OM) and saturated compounds were significantly affected by the drying treatments, particularly for vacuum centrifuge drying. Therefore, the DOM eluate was strongly recommended for the measurement of Fourier transform ion cyclotron resonance mass spectrometry only after dilution by desired folds when the minor DOM fractions, such as Cl-OM and saturated compounds, were of interest. The findings of this study have provided valuable evidence of sample preparation for the accurate elucidation of DOM chemodiversity from various sources.
{"title":"Effects of Eluate Drying on the Chemodiversity of Dissolved Organic Matter Revealed by Ultrahigh-Resolution Mass Spectrometry","authors":"Xinyi Chen, Qing-Long Fu* and Ziyong Sun, ","doi":"10.1021/acsmeasuresciau.5c00055","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.5c00055","url":null,"abstract":"<p >The drying treatment of dissolved organic matter (DOM) eluate was often used to prepare DOM solutions for chemodiversity analysis using Fourier transform ion cyclotron resonance mass spectrometry. However, the effects of drying treatment on the chemodiversity of DOM have not been thoroughly investigated. In this study, vacuum freeze-drying and vacuum centrifuge drying resulted in approximately half and 10% loss of DOM mass loss, respectively. Although the overall values of molecular functional diversity indices and main DOM fractions were insignificantly affected by both drying treatments, the Cl-containing molecules (Cl-OM) and saturated compounds were significantly affected by the drying treatments, particularly for vacuum centrifuge drying. Therefore, the DOM eluate was strongly recommended for the measurement of Fourier transform ion cyclotron resonance mass spectrometry only after dilution by desired folds when the minor DOM fractions, such as Cl-OM and saturated compounds, were of interest. The findings of this study have provided valuable evidence of sample preparation for the accurate elucidation of DOM chemodiversity from various sources.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 4","pages":"461–468"},"PeriodicalIF":4.6,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmeasuresciau.5c00055","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863072","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}
Pub Date : 2025-06-20DOI: 10.1021/acsmeasuresciau.5c00021
Boris Droz, Christopher G. Heron, Mitchell L. Kim-Fu, Patrick N. Reardon, Mireia Roig-Paul and Jennifer A. Field*,
The focus of this review is to provide an overview of the nomenclature, structure, and properties of perfluoroalkyl and polyfluoroalkyl substances (PFAS) that dictate the selection of analytical methods for analyzing PFAS in treated semiconductor wastewater. The review is organized by introducing the fundamental concepts of how structure dictates the physical-chemical properties of PFAS and how these properties determine the suitability and applicability of standardized analytical methods for individual PFAS as well as methods for total fluorine. Structures for PFAS measured in semiconductor wastewater or known to be in use by industry are given with tables intended as guidance for method selection. This review includes current guidance on sample collection, storage, and handling along with a comparison of U.S. Environmental Protection Agency and American Society for Testing and Materials analytical methods for target PFAS as well as methods for ultrashort PFAS. Methods are reviewed for volatile PFAS in wastewater as well as workflows for suspect and nontarget nonvolatile and volatile PFAS. Nonspecific methods for PFAS including the total oxidizable precursor assay, total fluorine analyses, and extractable and adsorbable organic fluorine assays are reviewed. Alternative detectors for total fluorine are reviewed along with nuclear magnetic resonance spectroscopy and sensors for online wastewater monitoring.
{"title":"Practical Guidance on Selecting Analytical Methods for PFAS in Semiconductor Manufacturing Wastewater","authors":"Boris Droz, Christopher G. Heron, Mitchell L. Kim-Fu, Patrick N. Reardon, Mireia Roig-Paul and Jennifer A. Field*, ","doi":"10.1021/acsmeasuresciau.5c00021","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.5c00021","url":null,"abstract":"<p >The focus of this review is to provide an overview of the nomenclature, structure, and properties of perfluoroalkyl and polyfluoroalkyl substances (PFAS) that dictate the selection of analytical methods for analyzing PFAS in treated semiconductor wastewater. The review is organized by introducing the fundamental concepts of how structure dictates the physical-chemical properties of PFAS and how these properties determine the suitability and applicability of standardized analytical methods for individual PFAS as well as methods for total fluorine. Structures for PFAS measured in semiconductor wastewater or known to be in use by industry are given with tables intended as guidance for method selection. This review includes current guidance on sample collection, storage, and handling along with a comparison of U.S. Environmental Protection Agency and American Society for Testing and Materials analytical methods for target PFAS as well as methods for ultrashort PFAS. Methods are reviewed for volatile PFAS in wastewater as well as workflows for suspect and nontarget nonvolatile and volatile PFAS. Nonspecific methods for PFAS including the total oxidizable precursor assay, total fluorine analyses, and extractable and adsorbable organic fluorine assays are reviewed. Alternative detectors for total fluorine are reviewed along with nuclear magnetic resonance spectroscopy and sensors for online wastewater monitoring.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 4","pages":"399–423"},"PeriodicalIF":4.6,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmeasuresciau.5c00021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863057","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}
Yunong Wang, Malavika Shashishekar, Dana M. Spence* and Lane A. Baker*,
{"title":"","authors":"Yunong Wang, Malavika Shashishekar, Dana M. Spence* and Lane A. Baker*, ","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 3","pages":"XXX-XXX XXX-XXX"},"PeriodicalIF":4.6,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/pdf/10.1021/acsmeasuresciau.5c00019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144429490","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}
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