{"title":"Spectrophotometric determination of sulfite in food by silicon molybdenum heteropoly acid","authors":"Xin-rong Wen, C. Tu","doi":"10.1117/12.2673903","DOIUrl":null,"url":null,"abstract":"An accurate, simple, fast spectrophotometric method for the determination of sulfite in food by silicon molybdenum heteropoly acid has been established. The various effect factors on the spectrophotometric determination of sulfite by silicon molybdenum heteropoly acid are investigated in detail. Under the optimum reaction conditions, silicon molybdenum heteropoly acid [H4Si(Mo3O10)4] formed by SiO32- and Mo7O246- is reduced by sulfite to form silicomolybdenum blue [H4Si(Mo3O10)2(Mo3O9)2]. The absorbance of silicomolybdenum blue is measured at 735.8 nm, and the content of sulfite can be determined based on the absorbance of silicomolybdenum blue. This proposed method has been applied to determinate of sulfite in food, and the results are satisfactory.","PeriodicalId":231020,"journal":{"name":"Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health","volume":"14 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biophysical Society of Guang Dong Province Academic Forum - Precise Photons and Life Health","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1117/12.2673903","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
An accurate, simple, fast spectrophotometric method for the determination of sulfite in food by silicon molybdenum heteropoly acid has been established. The various effect factors on the spectrophotometric determination of sulfite by silicon molybdenum heteropoly acid are investigated in detail. Under the optimum reaction conditions, silicon molybdenum heteropoly acid [H4Si(Mo3O10)4] formed by SiO32- and Mo7O246- is reduced by sulfite to form silicomolybdenum blue [H4Si(Mo3O10)2(Mo3O9)2]. The absorbance of silicomolybdenum blue is measured at 735.8 nm, and the content of sulfite can be determined based on the absorbance of silicomolybdenum blue. This proposed method has been applied to determinate of sulfite in food, and the results are satisfactory.
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