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近年来,在一些资本主义国家中,由于“公害”问题严重,多次发生汞污染食品的中毒事件,因而人们迫切要求了解生活环境中汞的污染情况,从而促进了痕量汞测定方法向着高灵敏、准确、简单、快速的方向速迅发展。无焰原子吸收分光光度法由于灵敏、快速、简单、准确,目前已被认为是测汞的最好方法,已广泛应用于空气、水、河流沉积物、血、尿、鱼、蛋、谷物、金属、岩石和土壤中痕量汞的分析。无焰法测汞的基本原理是利用金属汞在常温下具有足够大的蒸汽压和在空气中不易被氧化的特性,用还原剂将试样中的汞离子还原成金属汞后,随即通空气流将汞蒸汽导入两端具有石英窗的吸收管中,
In recent years, people in some capitalist countries have been urged to understand the pollution of mercury in their living environment due to the serious “public hazard” and the frequent occurrence of poisoning of mercury-contaminated food in some capitalist countries, thus promoting the determination of trace mercury toward higher Sensitive, accurate, simple and rapid rapid development of the direction. Flameless atomic absorption spectrophotometry has been widely used in air, water, river sediments, blood, urine, fish, eggs, cereals, rice and so on for its sensitivity, speediness, simplicity and accuracy. Analysis of trace mercury in metals, rocks and soils. Flame-free method to measure the basic principle of mercury is the use of metal mercury at room temperature has a large enough vapor pressure and the characteristics of the air is not easy to be oxidized, with the reducing agent in the sample of mercury ions reduced to metallic mercury, then pass through the air The stream introduces mercury vapor into an absorber tube with quartz windows at both ends,