School of Biosciences and Technology, Vellore Institute of Technology, Tamil Nadu, Vellore, 632014, India.
Environ Monit Assess. 2023 Jun 23;195(7):875. doi: 10.1007/s10661-023-11452-x.
Ranipet is an industrial hub located 120 km away from Chennai houses around 250 tanneries beside other industries. Tanneries and Tamil Nadu Chromate and Chemicals Limited (TCCL) generated and dumped tons of chromium waste on land and water bodies which is the major threat to the people living in the area for several years. In this study, heavy metal pollution in Ranipet industrial zone was estimated using the Heavy Metal Pollution Index (HPI) model along with spatial distribution maps. The level of Cd, Cu, Cr, Pb, Ni and Zn in ground and surface water was measured using standard methods, and the results were utilized to make the HPI model. It was observed that the metal level was in the order of Zn > Pb > Ni > Cu > Cr > Cd and Cr > Pb > Zn > Cd > Cu > Ni in ground and surface water respectively. All the ground water samples exhibited high HPI of (> 38). Except one sample with low HPI (˂ 19), and three surface water samples held in midrange (19-38), the other surface water samples displayed high HPI of (> 38). The average HPI of ground and surface water is 500.42 and 523.78. The HPI and spatial distribution of heavy metals revealed that the Cr contamination in Ranipet industrial estate is originated from the premises of TCCL.
拉尼佩特是一个工业中心，距离钦奈 120 公里，有大约 250 家制革厂和其他一些工业。制革厂和泰米尔纳德邦铬酸盐和化学品有限公司（TCCL）在土地和水体上产生和倾倒了数吨铬废物，这对该地区居民造成了多年的威胁。在这项研究中，使用重金属污染指数（HPI）模型以及空间分布图来估计拉尼佩特工业区的重金属污染。使用标准方法测量了地下水和地表水的 Cd、Cu、Cr、Pb、Ni 和 Zn 水平，并利用这些结果来制作 HPI 模型。结果表明，金属水平的顺序为 Zn > Pb > Ni > Cu > Cr > Cd，Cr > Pb > Zn > Cd > Cu > Ni。所有地下水样本的 HPI 均很高（>38）。除了一个 HPI 较低（<19）的样本和三个处于中间范围（19-38）的地表水样本外，其他地表水样本的 HPI 均很高（>38）。地下水和地表水的平均 HPI 分别为 500.42 和 523.78。重金属的 HPI 和空间分布表明，拉尼佩特工业区的 Cr 污染来自 TCCL 的所在地。
