摘要
本文研究食盐中矿物元素火焰原子吸收的分析干扰因素，讨论了背景干扰，氯离子干扰，钠离子干扰及其他共存离子干扰的问题。测定商品食盐中钾、钙、镁、铜、锰、锌、铁、铅、镉、铬。实验结果表明：铬不适合本法。背景吸收仅干扰钾和镁和测定；１％ 氯离子浓度（相当１．６％ 氯化钠）干扰钾的测定，１０％ 以上氯离子浓度干扰其他元素；２％ 钠离子浓度（相当５％ 氯化钠）可干扰元素的测定。经过技术处理，消除各种干扰后，用ＦＡＡＳ分析食盐中矿物元素，结果令人满意。
This paper studies interference factors in the analysis of mineral elements in salt by FAAS and discusses the problems of background interference,Cl - interference,Na + interference and other ion interferences.K,Na,Mg,Cu,Mn,Zn,Fe,Pb,Cr and Cd in commercial salt were determined.The results showed that this method did not suit Cr,background absorption only interfered with the determination of K,and Mg,1% Cl - interfered with the determination of K, and 10% Cl - or 2% Na + interfered with the other elements.After technical treatment and eliminating all sorts of interferences,the results of analysis for salt are satisfactory.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1999年第5期728-731,共4页
Spectroscopy and Spectral Analysis
