{"title":"Extraction of low-level sulphide from groundwaters for sulphur isotope analysis","authors":"Stephen J. Moncaster , Simon H. Bottrell","doi":"10.1016/0168-9622(91)90042-U","DOIUrl":null,"url":null,"abstract":"<div><p>A method is described for the preparation of sulphide precipitates for sulphur isotope analysis from sub-ppm (< 1 mg 1<sup>−</sup> levels of sulphide in natural waters. Hydrogen sulphide is degassed from acidified water samples into a nitrogen stream and subsequently re-precipitated in a silver nitrate trap. Control experiments on model waters of known sulphur isotope composition show that the average fractionation of sulphide is small (0.069‰) but an uncertainty of ±0.6‰ is appropriate for this method.</p></div>","PeriodicalId":100231,"journal":{"name":"Chemical Geology: Isotope Geoscience section","volume":"94 1","pages":"Pages 79-82"},"PeriodicalIF":0.0000,"publicationDate":"1991-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-9622(91)90042-U","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Geology: Isotope Geoscience section","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/016896229190042U","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
A method is described for the preparation of sulphide precipitates for sulphur isotope analysis from sub-ppm (< 1 mg 1− levels of sulphide in natural waters. Hydrogen sulphide is degassed from acidified water samples into a nitrogen stream and subsequently re-precipitated in a silver nitrate trap. Control experiments on model waters of known sulphur isotope composition show that the average fractionation of sulphide is small (0.069‰) but an uncertainty of ±0.6‰ is appropriate for this method.
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