矿产品中有害金属汞含量的检测方法对比  

Comparison of Detection Methods for Harmful Metallic Mercury Content in Mineral Products

作　　者：宁红 江荆 黎香荣 魏雅娟 吴雪英 陆黎明 吴巧如 伍斯静 阮海琼 叶玲玲 

机构地区：[1]广西中科石油化工研究院检测有限公司,广西南宁530100 [2]中国检验认证集团广西有限公司,广西南宁530022 [3]防城海关综合技术服务中心,广西防城港538000 [4]广西中检检测技术服务有限公司,广西防城港538000

出　　处：《大众科技》2023年第7期81-84,108,共5页Popular Science & Technology

基　　金：防城港市科技基地和人才专项(防科AC20014012)。

摘　　要：矿产品中金属汞的检测方法有冷原子吸收光谱法、原子荧光光谱法、固体进样直接法,前两者的检测原理均为:采用湿法溶解试样,在还原剂的作用下将汞还原,在特征波长下测定汞含量;而固体进样直接法则是将试样直接在分解炉炉氧气环境下,高温灼烧及催化热分解后,汞被原子成汞蒸气,在特征波长下测定汞含量。文章就三种方法的检测原理、试样准备、检测步骤、检出范围以及精密度做相应的阐述,方便不同的需求者选择合适的方法进行检测。The detection methods of metallic mercury in mineral products include cold atomic absorption spectrometry, atomic fluorescence spectrometry, and direct method of solid sampling. The detection principles of the first two are: the sample is dissolved by digestion, the mercury is reduced under the action of the reducing agent, and the mercury content is measured at the characteristic wavelength;while the direct method of solid sampling is that the sample is directly placed in the oxygen environment of the calciner furnace. Under high temperature, after high-temperature burning and catalytic thermal decomposition, mercury is atomized into mercury vapor, and the mercury content is measured at the characteristic wavelength. In this paper, the detection principles, sample preparation, detection steps, detection range and precision of the three methods are explained accordingly, so as to facilitate different demanders to choose the appropriate method for detection.

关 键 词：矿产品 金属汞 检测方法 

分 类 号：P575[天文地球—矿物学]