Traceability Analysis and Environmental Quality Assessment of Soil Heavy Metal Pollution in West Hunan Province

In order to explore the status of soil heavy metal pollution and environmental quality in west Hunan, relevant areas of Phoenix County were selected as the study area. Using data from 440 soil samples collected in the study area from June to August 2022, the pH value of the soil and contents of eight heavy metal elements, namely, As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn, were analyzed. The PMF model was used for traceability analysis and geochemical evaluation of soil environmental quality. The results showed that the average values of soil heavy metals ω(Zn), ω(Cr), ω(Pb), ω(Ni), ω(Cu), ω(As), ω(Cd), and ω(Hg) were 81.02, 64.67, 31.63, 29.27, 25.52, 9.93, 0.28, and 0.13 mg·kg-1, respectively. The soil in the study area was mainly weakly acidic, and the contents of the Cd and Hg elements were relatively high compared to the national soil background values and were highly variable. The contents of the Hg and Cd elements in forest land were higher than that in other land uses. The PMF model results showed that the contribution rates of heavy metal pollution sources in the study area were mining sources (37.4%), atmospheric sedimentation sources (7.7%), natural sources (41.1%), and agricultural activity sources (13.8%) and provided suggestions on pollution control measures according to the spatial distribution of the four types of pollution sources. Through the comprehensive assessment of soil environmental geochemistry, the study area was divided into three types of plots, namely, non-risk areas (94.27 km2), accounting for 76.38%; risk-controllable areas (27.45 km2), accounting for 22.24%; and high-risk areas (1.7 km2), accounting for 1.38%. This study provided data support for the prevention and control measures of land pollution in the research area, as well as the delineation of the prevention and control scope.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:45

Enthalten in:

Huan jing ke xue= Huanjing kexue - 45(2024), 3 vom: 08. März, Seite 1760-1768

Sprache:

Chinesisch

Beteiligte Personen:

Xiao, Kai-Qi [VerfasserIn]
Xu, Hong-Gen [VerfasserIn]
Gan, Jie [VerfasserIn]
Dai, Liang-Liang [VerfasserIn]
Li, Yi [VerfasserIn]
Li, Kai [VerfasserIn]
Xu, Qing-Yang [VerfasserIn]
Zhang, Jun [VerfasserIn]
Deng, Shi-Min [VerfasserIn]
Li, Ying [VerfasserIn]

Links:

Volltext

Themen:

English Abstract
Environmental quality assessment
Heavy metals
Journal Article
Soil
Traceability analysis
West Hunan

Anmerkungen:

Date Revised 12.03.2024

published: Print

Citation Status PubMed-not-MEDLINE

doi:

10.13227/j.hjkx.202304221

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM36961609X