根據一項來自美國與加拿大約50人組成的跨學科研究團隊其研究成果顯示,汞在大氣中的揮發最後會在3年內進入到魚的體內。
這項研究得出結論,若源自於火力發電廠及其他工業活動的汞揮發,在揮發時即刻減少其排放量,汞在魚體內含量增加的情況,則可能在十幾年內減緩。
被稱之為METAALICUS (加拿大與美國執行之汞進入大氣實驗計畫,Mercury Experiment to Assess Atmospheric Loading in Canada and the United States)的這項研究,由美加雙邊多個政府機構與大學攜手達成。
此研究的共同作者為來自亞伯達大學的聖路易斯(Vincent St. Louis),其表示「在這項研究之前,沒有人曾把汞在大氣中的揮發與魚體內的汞含量做直接的聯想。但此研究結果提供兩者間有直接關聯的重要證明。」
這項實驗填補了科學家關於理解汞如何傳遞的不足:汞揮發至大氣中,透過森林、土壤、湖泊,進入到魚體內,最後吃下這些魚的,就是人類。
Mercury atmospheric emissions will end up in fish in as little as three years, according to new research by a multidisciplinary team of about 50 researchers from the United States and Canada.
The study concludes that if mercury emissions from coal-fired power plants and other industrial activities were to be reduced immediately, the amount of mercury showing up in fish would begin to go down within a decade.
Called METAALICUS - Mercury Experiment to Assess Atmospheric Loading in Canada and the United States - the research involved government agencies and universities on both sides of the border.
"Before this study, no one had directly linked atmospheric deposition of mercury emissions and mercury in fish," says study co-author Vincent St. Louis of the University of Alberta. But this research provides "undeniable proof of a direct link," said St. Louis.
The experiment filled a major gap in scientists’ understanding of how mercury moves from the atmosphere through forests, soils, lakes and into the fish that people eat.
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