Spatial-temporal distribution of phthalate esters from riverine outlets of Pearl River Delta in China

The aquatic environments of the Pearl River Delta (PRD) in China have been contaminated by various industrial chemicals from local industries. In this study, the spatial-temporal distribution of six priority phthalate esters (PAEs) in surface water and sediments from the PRD was investigated. The PA...

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Bibliographic Details
Published in:Water science and technology 2015, Vol.71 (2), p.183-190
Main Authors: Li, Ting, Yin, Pinghe, Zhao, Ling, Wang, Guifang, Yu, Qiming Jimmy, Li, Huanyong, Duan, Shunshan
Format: Article
Language:English
Subjects:
Aquatic environment
Aquatic organisms
Brackish
Butyl benzyl phthalate
Calibration
China
Contamination
Dry season
Dry weight
Ecological risk assessment
Ecology
Embryos
Environmental Monitoring
Environmental protection
Esters
Esters - analysis
Fish
Freshwater
Gene expression
Hazardous materials
Health risk assessment
Hydrocarbons
Industrial pollution
Industry
Neurotoxicity
Organic chemicals
Outlets
Pesticide pollution
Phthalate esters
Phthalates
Phthalic Acids - analysis
Quotients
Rainy season
Rivers
Rivers - chemistry
Seasons
Sediment
Sediments
Solvents
Spatial distribution
Surface water
Temporal distribution
Toxicology
Water Pollutants, Chemical - analysis
Wet season
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Summary:The aquatic environments of the Pearl River Delta (PRD) in China have been contaminated by various industrial chemicals from local industries. In this study, the spatial-temporal distribution of six priority phthalate esters (PAEs) in surface water and sediments from the PRD was investigated. The PAEs were detected with total concentrations (Σ6PAEs) ranging from 0.35 to 20.70 μg L⁻¹ in surface water and dry weight ranging from 0.88 to 5.69 μg g⁻¹ in sediments. The Σ6PAEs concentrations in surface water were higher in the wet season than those in the dry season, while the opposite pattern was observed in sediments. Di(2-ethylhexyl) phthalate (DEHP) was the most abundant congener, which was higher than those reported in the literature. Risk quotients for relevant aquatic organisms were obtained and showed that most of these PAEs, in particular, butyl benzyl phthalate, DEHP and di-n-octyl phthalate, have significant potential health and ecological risks for the aquatic environment studied.
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2014.485