摘要
建立了电感耦合等离子体质谱法同时测定地下水中B、Br、I的方法。选定φ=2％（体积分数）的稀NH3·H2O介质消除碘的记忆效应。采用干扰较少的^10B和^79Br同位素。B、Br,I在0～10000ng／mL呈良好的线性关系。方法的检出限为^10B 0．176ng／mL，^79Br 0．876ng／mL，^127I 0．132ng／mL；精密度（RSD，n=12）为^10B 2．86％，^79Br 3.36％，^127I 2．69％；^10B的阶梯加标回收率为94．6％～101．5％，^79Br为98．3％～104．9％，^127I为96．5％～102.0％。
A method for the determination of boron, bromine and iodine in groundwater samples by inductively coupled plasma-mass spectrometry （ICP-MS） was proposed. Weak ammonia solution （φ =2% ） was selected to eliminate the memory effect from iodine. The isotopes of ^10B and ^79Br were chosen as determination isotopes for the less interference from coexistent elements. Linearity of boron, bromine and iodine are in 0 - 10000 ng/mL The detection limits of the method for ^10B, ^79Br and ^127I are 0. 176 ng/mL, 0. 876 ng/mL and 0. 132 ng/mL respectively. The recoveries of the method are 94.6% - 101.5% for B, 98.3% - 104.9% for Br and 96.5% 102.0% for I with precision （RSD,n = 12） of 2.86% for B, 3.36% for Br and 2.69% for I.
出处
《岩矿测试》
CAS
CSCD
2008年第1期25-28,共4页
Rock and Mineral Analysis
关键词
电感耦合等离子体质谱法
硼
溴
碘
地下水
inductively coupled plasma-mass spectrometry
boron
bromine
iodine
groundwater
