[Pollution Characteristics and Risk Assessment of Polycyclic Aromatic Hydrocarbons in Soils of Guangzhou].
Huan Jing Ke Xue
; 45(2): 1015-1025, 2024 Feb 08.
Article
em Zh
| MEDLINE
| ID: mdl-38471939
ABSTRACT
In order to comprehensively study the pollution characteristics of polycyclic aromatic hydrocarbons ï¼PAHsï¼ in soils of Guangzhouï¼ 222 topsoil samples were collected and analyzed. The ecological risk of soil PAHs pollution was evaluated using the effect interval low/median method ï¼ERL/ERMï¼ and the ï¼BaPï¼ toxicity equivalent methodï¼ and the health risk of soil PAHs pollution was evaluated using the lifelong cancer risk increment model. The source of PAHs was analyzed using the characteristic compound ratio method and PMF model. The results indicated thatï¼ the content of surface soil ï¼∑16PAHsï¼ in Guangzhou was 38-11 115 µg·kg-1ï¼ with an average of 526 µg·kg-1ï¼ and 16 types of polycyclic aromatic hydrocarbon monomers showed strong variation. There was a certain degree of ecological risk of PAHs in Guangzhouï¼ and there was already a significant ecological risk of PAHs pollution in individual sampling pointsï¼ which were generally in a state of mild pollution. Based on the results of the health risk assessmentï¼ the contribution rates of total cancer risk in both adults and children were presented as followsï¼ skin contact > ingestion of soil > respiratory intake. The health risk of children was greater than that of adultsï¼ and the overall health risk was within an acceptable range. Source analysis showed that the main sources of soil PAHs in Guangzhou were coal ï¼37.1%ï¼ï¼ diesel ï¼32%ï¼ï¼ coking ï¼17.3%ï¼ï¼ and mixed sources of traffic emissionsï¼ biomass combustionï¼ and petrochemical product volatilization ï¼13.6%ï¼. The overall source of soil PAHs belonged to mixed sources. The research results have enriched our understanding of the pollution status of PAHs in the surface soil of Guangzhou and are helpful in promoting soil pollution prevention and control actions.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Contexto em Saúde:
2_ODS3
Base de dados:
MEDLINE
Assunto principal:
Hidrocarbonetos Policíclicos Aromáticos
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Poluentes do Solo
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Neoplasias
Limite:
Adult
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Child
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Humans
País/Região como assunto:
Asia
Idioma:
Zh
Revista:
Huan Jing Ke Xue
Ano de publicação:
2024
Tipo de documento:
Article