2012/02/02
鎘與哥斯拉
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近日在報章上看到有關廣西河池鎘污染事件. 讓我想起早前在閱讀Disappearing spoon時因為對"哥斯拉"的故事有興趣而偶然看到關於鎘的小檔案.
為何鎘會與哥斯拉扯上關係呢? 因為日本在拍攝哥斯拉電影時, 科學家計劃用鎘製造炸彈來殺害哥斯拉. 劇本會選同鎘因為它曾在日本造成嚴重環境汚染和中毒, 所以它的毒害在日本國民的心中留下深刻印象!
鎘是一種危害環境的金屬。人類暴露主要從化燃燒石燃料, 水泥生產, 鐵和鋼的生產活動中吸取環境中的鎘。 然而，長期接觸鎘污染的食物和水會讓居民慢性中毒... ...
在第二次世界大戰的幾十年裡， 日本的採礦業讓鎘和其他有毒金屬污染Jinzū河。因此，鎘， 沿河岸下游滲入地下水並積聚在水稻中。 一些當地的貧窮的農民因食用了受污染的大米而引發了長期關節痛, 他們稱為(Itai-itai disease)痛痛病和腎功能異常 。發現後引起社會很大回嚮, 採礦公司也作出了巨額賠償!
希望廣西河這次事件只是個別情況而不會引起長期汚染, 影響河邊的農作物!
Cadmium is also an environmental hazard. Human exposures to environmental cadmium are primarily the result of fossil fuel combustion, phosphate fertilizers, natural sources, iron and steel production, cement production and related activities, nonferrous metals production, and municipal solid waste incineration. However, there have been a few instances of general population toxicity as the result of long-term exposure to cadmium in contaminated food and water. In the decades leading up to World War II, Japanese mining operations contaminated the Jinzū River with cadmium and traces of other toxic metals. As a consequence, cadmium accumulated in the rice crops growing along the riverbanks downstream of the mines. Some members of the local agricultural communities consuming the contaminated rice developed itai-itai disease and renal abnormalities, including proteinuria and glucosuria. (Source: www.wikipedia.org)
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