Spatial Variability and Source Apportionment of Aliphatic Hydrocarbons in Sediments from the Typical Coal Mining Area.
Bull Environ Contam Toxicol
; 105(2): 230-236, 2020 Aug.
Article
em En
| MEDLINE
| ID: mdl-32671410
ABSTRACT
Fifty-four surface sediments from the typical coal mining area were analyzed for pristane, phytane and C8-C40 n-alkanes using gas chromatography-mass spectrometry (GC-MS). The spatial distribution, homolog profiles and source apportionment of aliphatic hydrocarbons were investigated. Bimodal distribution pattern, centered at C16-C20 and C27-C33 n-alkanes, were observed in all sediment samples with an obvious dominance of low molecular weight homologues. Principal component analysis-multiple linear regression (PCA-MLR) was used to predict the contributions of different sources. The result implied that natural input was the main source, contribution of which accounted for 60.8%, and the contributions of different sources were estimated as follow 21.8% for terrestrial higher plants, 24.1% for algae and photosynthetic bacteria, 14.9% for submerged/floating macrophytes, 23.5% for fossil fuel combustion and 15.7% for petroleum hydrocarbons. Moreover, relatively high median concentrations of fossil fuel combustion were observed in Shou County and Fengtai County, indicating the high contribution of fossil fuel combustion in these two areas.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Petróleo
/
Monitoramento Ambiental
/
Minas de Carvão
/
Sedimentos Geológicos
/
Hidrocarbonetos
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article