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五十年代,在日本中部富山平原神通川两岸出现了稻田大面积死秧减产现象,同时在当地居民中还出现了一种怪病:患者初期表现腰、手和脚关节疼痛,数年后出现神经痛、骨痛,呼吸困难,行动不便,最后骨骼软化萎缩,自然骨折,饮食不进,在衰弱和疼痛中死去.经尸体解剖发现,死者有多处骨折,身长缩短,病态十分凄惨.这就是土壤污染造成的世界重大公害之一——骨痛病.据调查,神通川上游炼锌厂向河流中排放大量的含镉工业废水,用这种污染的河水灌田后土壤中含镉量显著增加,从而使稻米中含镉量也增加.由于人们长期食用含镉的稻米,结果产生了如上危害.
In the 1950s, a large area of dead rice production was observed across the Shentong River in the Toyama Plain in central Japan. At the same time, a strange disease appeared among the local residents. The patient showed pain in the lower back, hands and feet in the initial stage and after several years Neuralgia, bone pain, dyspnea, mobility, the last bone atrophy softening, natural fractures, diet does not enter, weakness and pain in the dead .After the autopsy found that the deceased had multiple fractures, shortened, morbid state of miserable. Is one of the world’s major public hazards caused by soil pollution - bone pain disease.According to the survey, Shentong upstream zinc smelter discharge to the river a large number of industrial wastewater containing cadmium, with this contaminated river water content of cadmium in soil As a result of the long-term consumption of cadmium-containing rice, as a result of the above hazards.