Research Center for Environmental Changes, Academia Sinica, Taipei 115, Taiwan.
J Hazard Mater. 2011 May 15;189(1-2):193-202. doi: 10.1016/j.jhazmat.2011.02.020. Epub 2011 Feb 15.
Through analyses of water and sediments, we investigate tungsten and 14 other heavy metals in a stream receiving treated effluents from a semiconductor manufacturer-clustered science park in Taiwan. Treated effluents account for ∼ 50% of total annual river discharge and <1% of total sediment discharge. Dissolved tungsten concentrations in the effluents abnormally reach 400 μg/L, as compared to the world river average concentration of <0.1 μg/L. Particulate tungsten concentrations are up to 300 μg/g in suspended and deposited sediments, and the corresponding enrichment factors are three orders of magnitude higher than average crust composition. Surprisingly, the estimated amount of tungsten exported to the adjacent ocean is 23.5 t/yr, which can approximate the amount from the Yangtze River should it be unpolluted. This study highlights the urgency of investigating the biological effect of such contamination.
通过对水和沉积物的分析，我们研究了台湾一个接收半导体制造商集中的科学园区处理后废水的溪流中的钨和其他 14 种重金属。处理后的废水约占河流总径流量的 50%，而占总沉积物排放量的不到 1%。废水中溶解态钨的浓度异常达到 400μg/L，而世界河流的平均浓度则<0.1μg/L。悬浮和沉积沉积物中的颗粒态钨浓度高达 300μg/g，相应的富集因子比平均地壳组成高出三个数量级。令人惊讶的是，估计有 23.5 吨/年的钨被输送到附近的海洋，这一数字接近如果长江未受污染时的排放量。本研究强调了调查这种污染的生物效应的紧迫性。
