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硅钼兰分光光度法测定微量L-抗坏血酸棕榈酸酯

作  者:
汤鲁宏;张浩
单  位:
无锡轻工大学食品学院
关键词:
L-抗坏血酸棕榈酸酯;硅钼杂多兰;分光光度法
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%。
译  名:
Sepectrophotometric Determination of Micro Quantity L- Ascorbyl Palmitate with Silica-molybdenum Heteropoly Blue
作  者:
Tang Luhong et al
关键词:
L-Ascorbyl Palmitate Silica-Molybdenum Heteropoly Blue Spectrophotometry
摘  要:
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%.

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