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中文摘要：
采用ICP-MS测定水稻中包括铊在内的多种重金属元素,同时对铊污染水稻进行了安全评价。对ICP-MS的工作条件及影响测定的因素进行了探讨,铊元素的检出限为0.006μg/L,其他各元素为0.008～0.3μg/L,Tl、Co、Ni、Cu、Mo、Cd、Pb等的加标回收率为94.2%～103.7%。对铊在水稻中的分布以及土壤铊污染对水稻吸收其他重金属元素的影响进行了分析。结果表明,铊在茎叶中的含量显著高于种子;铊对水稻茎叶吸收重金属有一定的促进作用,而对水稻种子吸收重金属却有抑制作用。
英文摘要：
A method was founded for determination of thallium and other heavy metal elements in rice by inductively coupled plasma mass spectrometry （ICP-MS）, and the safety of rice contaminated by thallium was evaluated. The working condition for ICP-MS and the interference effects of method were investigated. Under the optimum experimental conditions, the detection limit of thallium is 0.006μg/L, and for other elements their detction limits are in range of 0.008～0.30μg/L. The spiked recoveries for Tl, Co, Ni, Cu, Mo, Cd, and Pb are between 94.2% and 103.7%. Using this method,the distribution of thallium and the absorption of many other heavy metal elements in rice growing in thallium contaminated soil were analyzed. The results showed that thallium content in the stem and leaf is higher than that in the seed. Thallium can stimulate the stem and leaf of rice to absorb some other heavy metals, but restrain the rice seed to do so.
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