Simple Method for Determination of Sodium Hydrosulfite by Spectrophotometric Technique
Abstract
In this research, the samples preparation method for Sodium hydrosulfite analysis by spectrophotometric technique based on the decreasing absorbance signal decreased of copper sulfate and utilized with ultrasonic was studied. The optimum conditions were 1.0 M of copper sulfate, 0.15 M Sulfuric acid as catalyst, temperature of 70๐C, reaction time of 45 minute, and detected at 815 nm. Under optimum conditions, Calibration graph was in range of 0.2-1.0 g/L (R2 0.9949). The limit of detection and limit of quantification were 0.05 and 0.16 g/L, respectively. The relative standard deviations were 6.18 - 9.01 %. Percent recoveries were 93.0 - 103.1. The proposed method was applied to determination of sodium hydrosulfite in 3 types of food samples as bamboo shoots, bean sprouts, and chicken feet. The sodium hydrosulfite found in bean sprouts was 0.27 g/kg Keywords: sodium hydrosulfite, spectrophotometry, copper sulfateReferences
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Ter Maat, H., Hogendoorn J..A., and Versteeg, G.F. (2005). The removal of hydrogen sulfide from gas streams using an aqueous metal sulfate absorbent: Part I. The absorption of H2S in metalsulfate solutions, Sep. Pur. Tech., 43, 183–97.
Toxicology center. (n.d.). Be careful of bleaching agents hazards from consuming raw sprouts.. Retrieved April 13, 2015, from
Carvalho, L., and Schwedt, G. (2002). Spectrophotometric determination in household commercial formulations using Napthol yellow S. MiKrochim. Acta., 138, 83-87.
Danehy, J. P., and Zubritsky, C. W. (1974). Iodometric method for the determination of dithionite, bisulfite, and thiosulfate in the presence of each other and its use in following the decomposition of aqueous solution of sodium dithionite. Anal. Chem., 46(3), 391–395.
De Groot, D. C. (1997). Titrimetric determination of sodium dithionite with potassium hexacyanoferrate (III) as reagent and methylene blue as indicator. Journal Fresenius Zeitschrift fur analytische Chemie,
229 (5), 335-339.
Food Standards Australia New Zealand (FSANZ). (2014). Sodium Hydrosulphite as a Food Additive. Retrieved April 16, 2015, from https://www.foodstandards.gov.au/code/applications/Documents/ A1088-AppR.pdf
Institute for the Promotion of Teaching Science and Technology. (2011). Sodiumhydrosulfite food bleaching agents. Retrieved April 13, 2015, from http://fieldtrip.ipst.ac.th/intro_sub_content.php?content_id=21 &content_folder_id=205 (in Thai)
James, T., Apblett, A. and Materer, N. F. (2012). Rapid Quantification of Sodium Dithionite by Ion Chromatography. Chem. Res, 51, 7742-7746.
Jintana, K., and Yuparaid, U. (2014). The Exposure Assessment of Sulfur Dioxide Intake from Imported Dried Vegetable and Fruit in Thai Populations 2005 - 2014. Department of Medical Sciences Journal,
57(1), 58-68. (in Thai)
Ministry of Public Health. (2005). Food Act BE 2522 (1979) Food Additives Regulations No. 2. Nonthaburi: Food and Drug Administration. (in Thai)
Pratt, L. A. (1924). The Manufacture of Sodium Hyposulfite. Industrial & Engineering Chemistry. 16 (7),
676 –677.
Ter Maat, H., Hogendoorn J..A., and Versteeg, G.F. (2005). The removal of hydrogen sulfide from gas streams using an aqueous metal sulfate absorbent: Part I. The absorption of H2S in metalsulfate solutions, Sep. Pur. Tech., 43, 183–97.
Toxicology center. (n.d.). Be careful of bleaching agents hazards from consuming raw sprouts.. Retrieved April 13, 2015, from
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2017-07-20
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บทความวิจัยจากการประชุมวิชาการระดับชาติ"วิทยาศาสตร์วิจัย"ครั้งที่ 9
