分析测试学报2012，Vol.31Issue(4)：379-382,4.DOI:10.3969/j.issn.1004-4957.2012.04.003
紫外分光光度计检测十二烷基苯磺酸钠鉴别潲水油的方法研究
Distinguishment of Hogwash Fat through Determination of Sodium Dodecylbenzene Suifnate by Ultraviolet- Visible Spectrophotometry
摘要
Abstract
A new method was established for the determination of sodium dodecylbenzene suifnate (SDBS) in hogwash fat by ultraviolet -visible spectrophotometry. SDBS was extracted with distilled water, and reextracted with trichloromethane. The SDBS was determined after the coloration by methylene blue in the hogwash fat. The experimental factors such as extraction temperature and time were investigated. The optimal conditions were as follows: extraction time: 2 h, extraction temperature : 50 ℃ and detection wavelength: 645 nm. Under the optimal conditions, the detection limit of SDBS was 0. 1 μg/kg. The recoveries of SDBS in oil sample at spiked levels of 1. 0, 5. 0, 10. 0, 20. 0 μg/kg were in the range of 94% -96% with RSDs less than 5% . The results of 5 groups of actual samples showed that the average of SDBS residues in hogwash fat was 19. 19 μg/kg while the SDBS content in high-quality edible oil was 0. 35 μg/kg. The testing results of actual samples showed that the SDBS contents in the hogwash fat were of big differences, but the contents were overall higher than those of the edible oil. The method could be used in the discrimination of hogwash fat.关键词
潲水油/食用植物油/紫外可见分光光度计/十二烷基苯磺酸钠Key words
hogwash fat/ edible oil/ ultraviolet - visible spectrophotometry/ sodium dodecylbenzene suifnate (SDBS)分类
化学化工引用本文复制引用
李占彬,谭红,谢锋,李荣华,朱平,饶琼娟,杨林,孙海达..紫外分光光度计检测十二烷基苯磺酸钠鉴别潲水油的方法研究[J].分析测试学报,2012,31(4):379-382,4.基金项目
贵州省社会发展科技攻关计划(黔科合SY字[2010]3022号) （黔科合SY字[2010]3022号）
贵州省科学技术基金(黔科合J字[2012]2220号) （黔科合J字[2012]2220号）
