摘要
为了建立低检出限、高精密度的甲醇检测方法，采用电感耦合等离子体质谱法（ICPMS）tin,0定甲醇中I^Na、K、Ca、A1、Mo、Sb、W等15种微量元素的含量。测试方法的线性相关系数在0．9998～1．000之间，甲醇样品中杂质含量较低，均小于0．5pg／L。各元素的加标回收率在92％～105％之间，相对标准偏差RSD小于4％，测试结果准确，精密度高，方法检出限低，可达0．0005～O．0100μg／L。该方法可快速、准确的测定高纯甲醇中15种微量元素。
In order to create the detection method o methyl alcohol with low detection limit and high precision, kinds of 15 trace elements including Li, Na, K, Ca, A1, Mo, Sb, W in methyl alcohol were determined by inductively coupled plasma-mass spectrometry （ICP- MS）. The results show that the linear correlative coefficients are in the range of 0. 999 8- 1. 000. The contents of impurity elements are lower than 0.5 μg/L in methyl alcohol. The results of testing are accurate, the recoveries of the elements are 92%-105%, the relative standard deviation（RSD） is less than 4% and the precision of testing is high. The detection limit of method is low, which is in the range of 0. 000 5-0. 010 0 μg/L. This method is rapid and accurate, which can determine 15 trace elements in high purity methyl alcohol.
出处
《质谱学报》
EI
CAS
CSCD
北大核心
2014年第1期85-89,共5页
Journal of Chinese Mass Spectrometry Society
