氢化物发生-原子荧光光谱法测定地球化学样品中砷含量  

Measurement of Arsenic in Geochemical Samples by Atomic Fluorescence Spectrometry

作　　者：段文 石友昌 DUAN Wen;SHI You-chang(Kunming Natural Resources Comprehensive Survey Center of China Geological Survey,Kunming 650100,China)

机构地区：[1]中国地质调查局昆明自然资源综合调查中心,云南昆明650100

出　　处：《化工管理》2022年第20期26-29,共4页Chemical Engineering Management

摘　　要：利用化探方法中的氢化物原子荧光光谱法对砷元素含量的测定,可以为寻找石油、金银等矿物提供重要的依据。为了更加准确快速地测定出地球化学样品中砷含量,通过氢化物原子荧光光谱法,对仪器和条件进行优化选择,确定出最佳实验条件。试验表明:As的浓度在0~50μg/L范围内,荧光强度与浓度成线性关系,相关系数为0.9994,方法检出限为0.021μg/g,国家一级标准物质对数偏差ΔlgC小于0.04,试验重复性达到相关规范要求。The determination of arsenic content by hydride generation atomic fluorescence spectrometry in geochemical exploration samples was studied,It can provide an important basis for oil,silver and other minerals.For more accurate and rapid determination of arsenic content in geochemical exploration samples,getting through hydride generation atomic fluorescence spectrometry,optimize the selection of instruments and conditions,determine the best experimental conditions.Tests showed:the arsenic concentration in 0-50μg/L range,fluorescence intensity and concentration is linear,correlation coeff icient of 0.9994,method detection limits of 0.021μg/g,ΔlgC of the national standard samples is within 0.04,the test repeatability meets the relevant specif ication requirements.

关 键 词：氢化物-原子荧光光谱法 地球化学样品 砷 

分 类 号：O657.31[理学—分析化学]