植酸中无机磷的极谱测定  

Polarographic Determination of Inorganic Phosphorus in Phytic Acid

作　　者：陆光汉[1] 梁红[2] 姚磊明[3] 

机构地区：[1]华中师范大学化学系,武汉430070 [2]华中师范大学 [3]湖北教育学院

出　　处：《分析化学》1993年第9期1043-1045,共3页Chinese Journal of Analytical Chemistry

摘　　要：本文研究了W-Sb-P三元杂多酸的极谱行为,并建立了微量磷的极谱测定方法。该方法有较高的灵敏度,可应用于植酸中无机磷的分析,可以不经分离直接测定。A polarographic method is proposed for the determination of inorganic phosphorus. The procedure is based on the formation of ternary heteropoly acid complex. The polarographic behaviour of W-Sb-P heteropoly acid has been stu-died. The linear concentration range of phosphorus is 2×10-8-7×10-6g/ml.the detection limit is 8 ×10-9g/ml. The method has been applied to the determination of trace phosphorus in phytic acid.

关 键 词：无机磷 植酸 极谱 

分 类 号：O624.31[理学—有机化学]