title: [Characteristics of organic pollutants in the sediments from a typical electronics industrial zone].
abstract: In order to investigate the contamination status of organic pollutants in a river of a typical electrical equipment industrial area, Ronggui, Foshan, the sediments were sampled for the composition, concentration and occurrence analysis of organic pollutants. The polar and non-polar fractionation methods were employed for the fingerprint establishment of organic pollutants. One hundred and seventy-one of organic chemicals including ten categories of alkanes, alkenes, polycyclic aromatic hydrocarbons, benzene, heterocyclic compounds, phthalate esters, aldehydes, ketones, polar compounds, silicon-containing material as well as alkyl esters were examined. The number of different categories of the detected organic pollutants in a descending order was: alkanes > polar compounds > polycyclic aromatic hydrocarbons > aldehydes and ketones > heterocyclic compounds > benzene homologues, phthalate ester > alkyl esters > silicon material > olefins. The abundance of detected organic pollutants in a descending order was: alkanes > polar compounds > alkyl esters > olefins > polycyclic aromatic hydrocarbons > phthalates > silicon material > aldehydes and ketones > heterocyclic compounds > benzene homologues. Among the 51 kinds of alkanes detected, nonadecane accounted for 14.83%, and the persistent organic pollutants accounted for 2.33% of the total organic matter. Compared to similar studies, there were 51 kinds of alkanes and they accounted for 55.5% of the total organic chemicals, showing high diversity and abundance. In addition, some electronics industry-related organic pollutants such as silicone materials were also detected in high frequency.
authors.affiliation: South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China. liujin1926@126.com
authors.forename: Jin
authors.initials: J
authors.lastname: Liu
authors.forename: Dai-Yong
authors.initials: DY
authors.lastname: Deng
authors.forename: Mei-Ying
authors.initials: MY
authors.lastname: Xu
authors.forename: Guo-Ping
authors.initials: GP
authors.lastname: Sun
mesh_terms: D000473:Alkanes / Q000032:analysis; D002681:China; D059029:Electronic Waste / Q000032:analysis*; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D007221:Industry; D009930:Organic Chemicals / Q000032:analysis*; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D000473:Alkanes; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical