摘要
研究提出Ｃｕ（Ⅱ）－ＰＤＣ在溶液ｐＨ２～１１时定量共沉淀碱土金属盐中的痕量铅，用ＦＡＡＳ测定，检出限可达１．５×１０－２ｍｇ／ＬＰｂ（Ⅱ），标准加入回收率在９８％～１０４％之间，克服了基体干扰，取得了较为满意的结果。同时对共沉淀机理进行了初步的研究探讨，结果表明其属于吸附共沉淀类型。
A method has
been developed for the determination of trace lead in alkaline earth salts by FAAS after
quantitative coprecipitation with Cu(Ⅱ) PDC at the pH range of 2～11.The determination limit
is 1.5×10 -2 mg/L Pb(Ⅱ).The standard percent recovery is between 98～104%.The method
has overcome the effect of matrix and proved to be satisfactory.The coprecipitation mechanism
has also been studied.The results have shown that it belongs to adsorption coprecipitation.
出处
《分析试验室》
CAS
CSCD
1999年第2期47-50,共4页
Chinese Journal of Analysis Laboratory
关键词
铅
分离
共沉淀
碱土金属盐
试剂
测定
FAAS
Lead
Atomic absorption spectrometry
isolation method
coprecipitation
alkali earth
metal salts
