食品科学 ›› 1999, Vol. 20 ›› Issue (11): 54-57.
• 分析检测 • 上一篇 下一篇
汤鲁宏, 张浩
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TANG Lu-Hong, ZHANG Hao
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摘要: 研究了L-抗坏血酸棕榈酸酯(AP)在硅钼杂多兰形成反应中的影响,优选了测定条件,建立了测定其含量的硅铂兰分光光度法。本法显色体系的最大吸收波长在720mm,检测范围为0.25~2.0mg/50ml,相对标准偏差为0.43%,回收率为99.4%~100.4%。
关键词: L-抗坏血酸棕榈酸酯, 硅钼杂多兰, 分光光度法
Abstract: Anew method is presented for spectrophotometric determination of ascorbyl palmitate with silica- molybdenum heteropoly bine.The method is hased on the reaction of molybdenum heteropoly acid with ascorbyl pnlmitate.Optimum experimental conditions have been established.The apparent absorptivity is at 720nm.The de- terminatiom range is 0.25 ~ 2.0mg/50ml.the recovery is 99.4% ~ 100.4%,and the variation coelhcient is 0.43%.
Key words: L-Ascorbyl Palmitate Silica-Molybdenum Heteropoly Blue Spectrophotometry
汤鲁宏, 张浩. 硅钼兰分光光度法测定微量L-抗坏血酸棕榈酸酯[J]. 食品科学, 1999, 20(11): 54-57.
TANG Lu-Hong, ZHANG Hao. Sepectrophotometric Determination of Micro Quantity L- Ascorbyl Palmitate with Silica-molybdenum Heteropoly Blue[J]. FOOD SCIENCE, 1999, 20(11): 54-57.
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