平台—石墨炉原子吸收法测定水系沉积物中的痕量银  

Determination of Trace Ag by Platform-Furnace AAS

作　　者：何铭慈 He Mingci

机构地区：[1]浙江省地质测试中心

出　　处：《岩矿测试》1988年第2期133-136,I0009,共5页Rock and Mineral Analysis

摘　　要：L′vov在论及原子吸收分析的绝对方法时提出了电热原子化器的理想模型,其中平台是原子化器的一个要重组成部分。以后,Slavin等做了大量工作,并结合Ediger的基体改进概念,提出了用石墨炉原子吸收作一系列元素的直接测定的稳温平台炉法(即STPF方法)。The method uses tellurium as matrix modifier to raise charring temperature of Ag.This is presumably effected through formation of a Hessite(Ag_(2)Te)-like compound.The platform was made from spectral pure graphite electrode and treated with Ta,its mass was approximately 65 mg.Instrumental parameters,acidity,foreign ion effects and background absorption have been studied.The method was checked by using the 8 GSD’s.A detection limit of 0.035μg/g was obtained,with relative standard deviation less than 20%.

关 键 词：原子吸收分析 石墨炉原子吸收 原子化器 理想模型 水系沉积物 痕量银 

分 类 号：G63[文化科学—教育学]