SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS AND HEALTH RISK ASSESSMENT OF HEAVY METALS IN THE CHU RIVER BASIN

GUO Yake; GAO Yanyan; QIAN Hui; TANG Shunqi; WANG Haike; SHI Xiaoxin

doi:10.13205/j.hjgc.202301014

Volume 41 Issue 1

Jan. 2023

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2023 > 41(1): 112-119

GUO Yake, GAO Yanyan, QIAN Hui, TANG Shunqi, WANG Haike, SHI Xiaoxin. SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS AND HEALTH RISK ASSESSMENT OF HEAVY METALS IN THE CHU RIVER BASIN[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 112-119. doi: 10.13205/j.hjgc.202301014

Citation:

GUO Yake, GAO Yanyan, QIAN Hui, TANG Shunqi, WANG Haike, SHI Xiaoxin. SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS AND HEALTH RISK ASSESSMENT OF HEAVY METALS IN THE CHU RIVER BASIN[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 112-119. doi: 10.13205/j.hjgc.202301014

Citation:

GUO Yake, GAO Yanyan, QIAN Hui, TANG Shunqi, WANG Haike, SHI Xiaoxin. SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS AND HEALTH RISK ASSESSMENT OF HEAVY METALS IN THE CHU RIVER BASIN[J]. ENVIRONMENTAL ENGINEERING , 2023, 41(1): 112-119. doi: 10.13205/j.hjgc.202301014

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SPATIAL AND TEMPORAL DISTRIBUTION CHARACTERISTICS AND HEALTH RISK ASSESSMENT OF HEAVY METALS IN THE CHU RIVER BASIN

doi: 10.13205/j.hjgc.202301014

GUO Yake^1,2,
GAO Yanyan^1,2,
QIAN Hui^{1,2
,
,},
TANG Shunqi^1,2,
WANG Haike^1,2,
SHI Xiaoxin^1,2

1. School of Water and Environment, Chang'an University, Xi'an 710064, China;
2. Key Laboratory of Subsurface Hydrology and Ecology Effects in Arid Areas, Ministry of Education, Xi'an 710064, China

Received Date: 2022-03-08
Available Online: 2023-03-23

Abstract

Abstract

In order to clarify the harmful degree of heavy metal pollution in the surface river water under the influence of pyrite, we took Chu River, a tributary of Han River, as the research object, and then selected the sections from the pyrite mining area to the entrance of Chu River into Ren River, to study the distribution characteristics of Fe, Mn, Cu, Zn, Cd and Cr in river water during different water periods. In addition, the health risk assessment model was used to evaluate the health risk of heavy metals in surface water in the two seasons. The results showed that:there were significant spatial and temporal differences in the distribution of heavy metals in rivers. In terms of time, excessive Fe and Cr existed in the dry season. Heavy metals were diluted in the river during the wet season, and the change in the river water environment led to the migration and transformation of heavy metals, so the overall water quality was improved. Spatially, affected by the distance from the mining area and rainy season, the concentration in the middle and upper reaches increased significantly when it was close to the mining area, and the influence of human activities downstream was also significant. The results of the health risk assessment showed that there was a non-carcinogenic risk in the middle reaches of the river in dry season. The order of non-carcinogenic risk of heavy metals was Cr>Cd>Fe>Cu>Mn>Zn. Heavy metal Cr had a significant carcinogenic risk to human body, and Cd had a significant carcinogenic risk to children in dry season. The study puts forward definite measures and suggestions to enhance the mine and river environment.
- the Chu River basin,
- heavy metals,
- distribution characteristics,
- health risk assessment,
- river regulation

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References(28)

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