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为检验尿镉作为环境镉接触的内剂量指标的意义,在受镉污染的日本石川县梯川流域进行了调查。调查对象为该流域50岁以上的居民。污染来自河上游的某矿,由于用污染河水灌溉造成23个村土壤及稻米镉污染。1971年采矿停止,1977～1988年移去受污染的土壤,复植了新土。1981年和1982年进行了现况调查,污染区调查了3178人,非污染对照区调查了50岁以上的居民294人,分别占应调查人数的91%和94%。从调查表中选仅食用自家稻米的污染区居民1815人(男865,女950)作为这次研究的镉接触组,一直生活在非污染区不曾食用污染区稻米的240人作对照。晨尿样用稀
To test the significance of urinary cadmium as an indicator of the amount of cadmium exposed to the environment, a cadmium contamination survey was conducted in Ladch, Ishikawa, Japan. The survey respondents were over 50 years old in the basin. Pollution of a mine from the upper reaches of the river resulted in 23 villages of soil and rice cadmium contamination due to irrigation with polluted river water. Mining ceased in 1971, removing contaminated soil from 1977 to 1988 and planting new soil. 1981 and 1982 conducted a survey of the status of the polluted area survey of 3178 people, non-polluting control area survey of residents over the age of 50 294, respectively, accounting for 91% of the survey population and 94%. A total of 1815 residents (865 males and 950 females) living in the polluted area of their own rice from the questionnaire as the cadmium exposure group in this study have been living in non-contaminated areas 240 people without contaminated rice as a control. Morning urine samples with dilute