[Analysis of Heavy Metal Sources in Farmland Soil of Sewage Irrigation and Industrial Complex Area Based on APCS-MLR and PMF].
Huan Jing Ke Xue
; 45(8): 4812-4824, 2024 Aug 08.
Article
en Zh
| MEDLINE
| ID: mdl-39168698
ABSTRACT
The contents of eight heavy metals ï¼Cr, Ni, Cu, Zn, Cd, Pb, As, and Hgï¼ were determined based on the surface soil samples of sewage irrigation and industrial complex in Kaifeng City. The absolute factor analysis-multiple linear regression ï¼APCS-MLRï¼ model and positive matrix factorization ï¼PMFï¼ model were used to analyze the sources and contribution rates of heavy metals in soil combined with correlation analysis and systematic cluster analysis. The results showed thatï¼ â The average values of ωï¼Crï¼, ωï¼Niï¼, ωï¼Cuï¼, ωï¼Znï¼, ωï¼Cdï¼, ωï¼Pbï¼, ωï¼Asï¼, and ωï¼Hgï¼ in the study area were 52.19, 25.00, 42.03, 323.53, 1.79, 53.45, 9.43, and 0.20 mg·kg-1, respectively, and Cr, Ni, and As are lower than the background values of tidal soil. Cu, Zn, Cd, Pb, and Hg are higher than the background values of the tidal soil. â¡ There were four sources of the eight heavy metalsï¼ natural sources, agricultural sewage irrigation sources, industrial atmospheric sedimentation sources, and transportation sources. Cr and Ni were mainly from natural sourcesï¼ Cu, Zn, Cd, and Pb were mainly from agricultural sewage irrigation and transportation sourcesï¼ As was mainly from natural sources and agricultural sewage irrigationï¼ and Hg was mainly from industrial atmospheric sedimentation. ⢠The APCS-MLR and PMF source analysis results indicated that industrial and agricultural activities were the main sources of heavy metals in the soil of the study area. The average contribution rates of APCS-MLR in the nine sampling areas of the research area were 76.01% ï¼natural sources and agricultural sewage irrigation sourcesï¼, 22.71% ï¼industrial atmospheric sedimentation sources and transportation sourcesï¼, and 1.28% ï¼unknown sourcesï¼. The average contribution rates of PMF were 59.66% ï¼natural sources and agricultural sewage irrigation sourcesï¼ and 40.34% ï¼industrial atmospheric sedimentation sources and transportation sourcesï¼. The source analysis results of the LZ, XZ, NLT, PT, YLZ, and BC models were basically consistent, and WL was better in the APCS-MLR model, whereas SG and QT were better in the PMF model. The research results can provide a scientific basis for the prevention and control of soil heavy metal pollution and environmental remediation.
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1
Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
Zh
Revista:
Huan Jing Ke Xue
Año:
2024
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
China