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重金属盐硝酸钡为常用化学试剂。因其可溶于水而易发生误食和投毒等。钡盐中毒检验常采用化学反应和比色方法定性定量，但存在干扰和准确度等问题。本文结合硝酸钡中毒案例，以等离子体直读光谱仪（ICP—AES）分析，测试了人体硝酸初中毒生物检材中的毒物含量，介绍了刑事化验
Heavy metal salts of barium nitrate are commonly used chemical reagents. Because it is soluble in water and prone to eating and poisoning. Barium salt poisoning tests are often used qualitative and quantitative chemical reaction and colorimetric methods, but there are problems such as interference and accuracy. In this paper, combined with the case of barium nitrate poisoning, plasma to direct reading spectrometer (ICP-AES) analysis of the human body nitrite poisoning biological samples detected the content of poison, introduced the criminal test