石墨炉原子吸收法测定生物样品中镉的几种基体改进剂的比较

Comparison of Several Matrix Modi-fiers in Determination of Cadmium In Bio-material by Graphite Furnace Atomic Ab-sorption Spectrometry

本文比较了磷酸二氢铵、氟化铵、硫酸铵、氯化钯、氯铂酸以及氯铂酸与多种有机酸的混合试剂在测定ＧＢＷ猪肝标准物质中镉时基体改进效果，其中，氯铂酸的基体改进能力最强，猪肝标准物质的回收率在９０％～１１５％之间。

Themodifiability of several matrixmodifiers including ammonium biphosphate,ammonium fluoride,ammonium sulphate,palladium chloride,chloro-platinic acid andthe mixed chemical agents of chloro-platinicacid with variOus organic acids have beencompared in the determination of cadmium inthe standard substance of GBW pig’s liver.Among these modifiers chloro-platinic acidis found to have the strongest modifiabilityfor determination.The recovery of cadmium1n standard substance of pig's liver is 90%～115%。