铊及其化合物有剧毒。它的硫酸盐和乙酸盐已作为杀虫剂和灭鼠剂。铊在环境样品中,如土、气、水和植物等,含量很低,但在冶炼厂的回降物中,烧煤的烟道灰和水泥工业的尘埃中均发现有铊。铊可能造成污染及危害人体健康等情况,不容忽视。然而目前缺少灵敏、可靠的监测痕量铊的方法。石墨炉原子吸收法具有灵敏、取样少和操作简便等优点,目前已广泛应用于环境样品和各种材料中痕量元素的测定。但迄今为止,文献中用于测定铊的报导却很少。Welcher首先用石墨炉测定合金中的铊,指出盐酸对铊产生严重的 Thallium and its compounds are highly toxic. Its sulfate and acetate have been used as insecticides and rodenticides. Thallium is very low in environmental samples such as soil, gas, water and plants. However, thallium is found in the soot of the smelter, in the flue gas of coal burning and in the dust of the cement industry. Thallium may cause pollution and endanger human health, etc., can not be ignored. However, there is a lack of a sensitive and reliable method for monitoring trace amounts of thallium. Graphite furnace atomic absorption method is sensitive, less sampling and easy operation, etc., has been widely used in environmental samples and various materials in the determination of trace elements. However, to date, there have been few reports in the literature on the determination of thallium. Welcher first determined the thallium in the alloy by a graphite furnace, noting that hydrochloric acid had a serious effect on thallium