Ecological health risk assessment of farmland surface soil heavy metals in Dashetai, Ulat Front Banner, Inner Mongolia

YUAN Shuai; ZHANG Siyuan; ZHANG Xueqiong; YUAN Guoli; WANG Yongliang; BIAN Peng; TAI Surigala

doi:10.12029/gc20220302002

GEOLOGY IN CHINA > 2024 > 51(5): 1686-1700. > DOI: 10.12029/gc20220302002

Yuan Shuai, Zhang Siyuan, Zhang Xueqiong, Yuan Guoli, Wang Yongliang, Bian Peng, Tai Surigala. 2024. Ecological health risk assessment of farmland surface soil heavy metals in Dashetai, Ulat Front Banner, Inner Mongolia[J]. Geology in China, 51(5): 1686−1700. DOI: 10.12029/gc20220302002

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Ecological health risk assessment of farmland surface soil heavy metals in Dashetai, Ulat Front Banner, Inner Mongolia

YUAN Shuai^{1, 2, 3,},
ZHANG Siyuan^{1, 2, 4, ,},
ZHANG Xueqiong^5, ,,
YUAN Guoli⁴,
WANG Yongliang^{1, 2},
BIAN Peng^{1, 2},
TAI Surigala^{1, 2}

1.
Hohhot General Survey of Natural Resources Center, China Geological Survey, Hohhot 010010, Inner Mongolia, China
2.
Innovation Base for Water Resource Exploration and Eco−environmental Effects in the Daheihe Basin of the Yellow River, Hohhot 010010, Inner Mongolia, China
3.
School of Water Resources and Environment, China University of Geosciences, Beijing 100083, China
4.
School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China
5.
Department of Science, Inner Mongolia Agricultural University, Hohhot 010018, Inner Mongolia, China

Funds: Supported by the project of China Geological Survey (No.DD20211591).

More Information

Author Bio:
YUAN Shuai, male, born in 1991, engineer, mainly engaged in geological environment research; E-mail: yuanshuaicugb@163.com
Corresponding author:
ZHANG Siyuan, male, born in 1991, engineer, mainly engaged in comprehensive survey of natural resources; E-mail: zhangsy5@qq.com

ZHANG Xueqiong, female, born in 1990, lecturer, mainly engaged in environmental earth chemistry; E-mail:lxyzxq@imau.edu.cn.
Received Date: March 01, 2022
Revised Date: June 06, 2022

Graphical Abstract

Abstract

Abstract

This paper is the result of environmental geological survey engineering.
Objective
This study aims to evaluate the current status of heavy metal contamination in the soil of Dashetai, Ulat Front Banner. A comprehensive sampling campaign was conducted, involving the systematic collection of 845 topsoil samples, 30 crop samples, and 17 drinking water samples. The concentrations of eight heavy metals (Arsenic (As), Cadmium (Cd), Chromium (Cr), Copper (Cu), Mercury (Hg), Nickel (Ni), Lead (Pb), and Zinc (Zn)) were analyzed to assess the extent of contamination.
Methods
The levels of soil heavy metal contamination, ecological risk, and associated health risks in the study area were assessed using the geoaccumulation index method, the potential ecological hazard index method, and a health risk assessment model.
Results
The concentrations of heavy metals in the farmland soils of Dashetai are approximately equivalent to the background levels observed in the Hetao Plain. The assessment of potential ecological risks indicated that the heavy metal contamination in the soil predominantly posed slight to moderate ecological hazards. The human health risk assessment revealed that, through oral and dermal exposure, the soil's carcinogenic risk value was calculated to be 5.69 × 10⁻⁶, which exceeds the standard threshold of 10⁻⁶. However, this level of risk is considered to pose a minimal carcinogenic threat, one that is generally deemed acceptable by public health standards.
Conclusions
The distribution of mercury (Hg) is significantly influenced by anthropogenic activities, with areas of medium to high risk predominantly located in Dashetai. In contrast, the distribution of other elements is primarily governed by the parent materials of the soil. Moderate−risk areas for cadmium (Cd) are concentrated along the coast of Wuliangsu Lake. Arsenic (As) was identified as the primary contributor to the health risks associated with the consumption of vegetables, grains, and drinking water.
- soil,
- heavy metal,
- ecological risk,
- health risk,
- environmental geological survey engineering,
- Ulat Front Banner,
- Inner Mongolia
Highlights
With the method of land accumulation index, potential ecological hazard index and health risk assessment model, we evaluated the level of heavy metal pollution, ecological risk and health risk of the alluvial and diluvial soil of Hetao Plain in Dashetai, Inner Mongolia.

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References (89)

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