MERCURY IN ENVIRONMENTAL AND BIOLOGICAL SAMPLES FROM A GOLD MINING AREA IN THE AMAZON REGION OF BRAZIL
MERCURY IN ENVIRONMENTAL AND BIOLOGICAL SAMPLES FROM A GOLD MINING AREA IN THE AMAZON REGION OF BRAZIL
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DOI：
10.1016/0048-9697(95)04533-7
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发表时间：
1995-05-19
影响因子：
9.8
通讯作者：
TAYLOR, A
中科院分区：
文献类型：
--
作者：
PALHETA, D;TAYLOR, A
巴西亚马逊地区金矿开采的大量增加导致金属汞大量排放到水生生态系统中。为了调查汞的分散情况，测量了水、鱼和动物组织以及当地居民的血液、尿液和头发中的总汞和无机汞浓度。与未受污染地区相比，河水、沉积物和鱼类中的汞浓度较高。饲养在该地区和靠近污染河流的牛和猪的头发和血液中的汞浓度分别为0.1-1.28 μ g/g和11.7-15.7 μ g/l。这些结果大约是对照动物标本测量结果的两倍。居民血、尿、发汞平均浓度分别升高11.4、22.8、4.3 μ g/l，金矿工人尿汞最高达155 μ g/l。研究结果表明，汞对环境造成了广泛的污染，并将这种金属转移到用作食物的鱼类和动物身上，并进入该地区的居民体内。需要对可能的不利健康影响进行进一步调查。
A massive increase in gold mining in the Amazon region of Brazil has led to an enormous discharge of metallic mercury into the aquatic ecosystem. To investigate the dispersion, total and inorganic mercury concentrations were measured in water, fish and animal tissues, and in blood, urine and hair from members of the local populations. Mercury concentrations in river water, sediments and fish were high compared with those of non-contaminated areas. Cattle and pigs kept in the area and with access to the contaminated rivers had concentrations of mercury of 0.1-1.28 mu g/g and 11.7-15.7 mu g/l in hair and blood, respectively. These results are approximately twice those measured in specimens from control animals. Mean mercury concentrations in blood, urine and hair of residents were increased at 11.4 mu g/l, 22.8 mu g/l and 4.3 mu g/g, respectively, and the urine mercury of workers from the gold mining sites were up to 155 mu g/l. The results demonstrate widespread contamination of the environment by mercury with transfer of the metal to fish and animals used for food, and into the inhabitants of the region. Further investigations for possible adverse health effects need to be undertaken.