化学光谱测定天然水中超微量金属元素

来源期刊：中南大学学报(自然科学版)1984年第4期

论文作者：谭书香 沈汇

文章页码：61 - 70

关键词：微量金属元素； 天然水； 浓度范围； 标准偏差； 钙镁含量； 内标元素； 同时测定； 有害金属元素； 变动系数； 偏硼酸

摘    要：本文在薄炭圆盘技术的基础上,研究了天然水中钙镁对所测定十四个超微量金属元素的影响。采用外加基体的方法,可消除钙镁的影响。检测限对不同元素分别为n×10^-2—n×10^-4毫克/升,在n×10^-2毫克/升的浓度范围,十次测定的变动系数小于25%。

Abstract: In this paper, on the basis of thin carbon disc technique, the effects of calcium and magnesium in the natural water on the 14 kinds of metallic elements in sub-microgram which were measured have been studied. These effects can be eliminated by the adoption of additional matrix method. The detection limits for different elements are between n×10^-2-n×10^-4mg/litre respectively. When the concentration range is n×l0^-2mg/litre, the standard deviation in 10 tests is less than 5 and the coefficient of variation is less than 25%.