Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, 81157, Taiwan (Republic of China).
Faculty of Environment and Natural Resources, University of Technology, Vietnam National University - Ho Chi Minh, Ho Chi Minh City, 700000, Vietnam.
Environ Sci Pollut Res Int. 2020 Oct;27(28):34770-34780. doi: 10.1007/s11356-020-07737-0. Epub 2020 Feb 3.
One of the most industrially affected rivers in Taiwan, the Houjing River, was studied in this research. The water and sediment samples were collected at five locations to measure the concentration of eight metals (As, Cd, Cr, Cu, Hg, Pb, Ni, and Zn). In order to assess the heavy metal contamination and its adverse biological effect, the heavy metal pollution index (HPI), the degree of contamination index (DC), the contamination factor (CF), the index of geo-accumulation (I), and hazard quotients (HQs) were employed. The results showed that the Houjing River's water and sediment were contaminated with heavy metals. The annually averaged values of HPI (128.3) and DC (21.3) indicate that the water is unsafe for potable use and the sediment contamination level is at considerable degree of contamination. CF and I calculation show that Zn, Cu, and Cd are the three main metals contributing to heavy metal contamination in sediment. Evaluation of adverse biological effects suggests that Zn, Cu, and Ni are the major metals that cause adverse effects on organisms. This study provides an overview of the synergistic heavy metal contamination degree of the Houjing River and its adverse biological effects, which should be a reliable reference for future contamination control and management plans.
本研究以台湾受工业影响最严重的河流之一后里溪为研究对象。采集了五个地点的水和沉积物样本，以测量八种金属（砷、镉、铬、铜、汞、铅、镍和锌）的浓度。为了评估重金属污染及其对生物的不良影响，采用了重金属污染指数（HPI）、污染程度指数（DC）、污染因子（CF）、地质累积指数（I）和危害商数（HQs）。结果表明，后里溪的水和沉积物受到重金属污染。HPI（128.3）和 DC（21.3）的年平均值表明，水不适合饮用，沉积物的污染程度属于相当程度的污染。CF 和 I 的计算表明，锌、铜和镉是导致沉积物中重金属污染的三种主要金属。对生物不良影响的评估表明，锌、铜和镍是对生物产生不良影响的主要金属。本研究概述了后里溪的重金属协同污染程度及其对生物的不良影响，为未来的污染控制和管理计划提供了可靠的参考。
