冷原子无色散原子荧光法测定地球化学样品中的微量汞  

Determination of Trace Mercury by Cold Vapour Non-dispersive Atomic Fluorescence Spectrometry in Geochemical Samples

作　　者：张锦茂 张勤 Zhang Jin-mao;Zhang qin

机构地区：[1]地矿部物化探研究所

出　　处：《岩矿测试》1986年第1期37-40,I0010,共5页Rock and Mineral Analysis

摘　　要：本文阐述了用笔型低压汞灯为激发光源和氯化亚锡作还原剂的冷原子无色散原子荧光测汞方法。研究和比较了不同的激发光源,还原剂及载气。试验了38种共存元素的影响和干扰消除。对所报导的方法,在地球化学样品中含量低至9ppb的汞也得到良好的精密度。The highly selective cold vapour non-dispersive atomic fluorescence spect-rometry for determination of trace mercury is based on the reduction of mercuric salt solution with stannous chloride,a low pressure Hg-lamp was used as exciting sourse.The influences of 38 elements were tested,The detection limit of mercury is 4.2×10^(-11)g.The method has been used for the determination of of less than 9 ppb of Hg in geochemical samples with satisfactory precision.

关 键 词：冷原子 原子荧光 激发光源 荧光法测定 共存元素 低压汞灯 氯化亚锡 地球化学样品 

分 类 号：O65[理学—分析化学]