The Pollution Status and Evaluation of Heavy Metals in chemical

mixed soil in middle Jiangsu

Shuai Guo , Qingjie Xie*

Page No. 8-19

With the development of economy and industry, chemical plants are playing an increasingly

important role. With this, these companies produce a large amount of waste and waste water in the

production process. The illegal stacking of these chemical wastes has caused soil damage.

Extremely serious pollution has a huge impact on the environment. In this study, a chemical

company buried chemical miscellaneous fills near a village. Through data collection and a large

number of on-site sampling, the current distribution of eight heavy metal elements in chemical

miscellaneous fills was analyzed, and the single-factor pollution index method was adopted

respectively. The Nemeiro Pollution Index Method and the Potential Ecological Risk Index Method

evaluate the current status of soil pollution in the region, and clarify the impact of chemical

miscellaneous fills on the surrounding environment. As, Hg, Cu, Zn, and Cd in chemical

miscellaneous fill areas are all polluted. According to the single factor index and Nemeiro index,

the main pollutants are Zn and Cd, and in the samples contaminated by Cd, more than 50% The

rating results of the points are severe pollution. The main pollution points are 0.5~2.5m depth of A4

and A5 and 0.5m depth of A6. The remaining points are basically severe pollution; according to the

potential ecological hazard index method, only Hg and The two elements of Cd reach the level of

medium ecological hazard and above, and the points above the medium ecological hazard in the

study area are mainly concentrated in two points A4 and A5.

Keywords : Soil , Heavy , Metal Pollution Environmental Quality Assessment