Article

Perfluorinated compounds in sediments from the Daliao River system of northeast China.

School of Environmental and Biological Science and Technology, Dalian University of Technology, Key Laboratory of Industrial Ecology and Environmental Engineering, Ministry of Education, Dalian 116024, China.
Chemosphere (impact factor: 3.21). 09/2009; 77(5):652-7. DOI:10.1016/j.chemosphere.2009.08.018 pp.652-7
Source: PubMed

ABSTRACT Perfluorinated compounds (PFCs) have received much attention on their distributions in various matrixes of different areas globally, however, little is known about their existences in river sediments of China. In this study, eight target PFCs including perfluorobutane sulfonate (PFBS), perfluorohexane sulfonate (PFHxS), perfluorooctane sulfonate (PFOS), perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), perfluorododecanoic acid (PFDoA) and perfluorotetradecanoic acid (PFTA) were determined based upon the upper 10cm surface sediment samples collected from eleven sites covering three main streams of the Daliao River system in northeast China, which received huge amount of industrial and domestic wastewater annually from the neighbouring areas. Analytical results indicated that total concentrations of PFCs were determined in the range of 0.29-1.03ngg(-1) dry weight in sediments from this river system. As the dominant PFCs contaminants in sediment samples, concentrations of PFOS and PFOA were ranged between <LOQ and 0.37ngg(-1) dry weight and from <LOQ to 0.17ngg(-1) dry weight, respectively, while those of the other six target analytes relating to PFBS, PFHxS, PFNA, PFDA, PFDoA and PFTA were below their LOQs at most of the sampling sites. Additional analyses on vertical variations of total PFCs concentrations in sectioned sediment core samples from three main streams of this river system presented overall decreasing trends of PFCs contaminations with depth in the top 10cm surface sediments of these rivers.

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Keywords

Daliao River system
 
decreasing trends
 
different areas globally
 
domestic wastewater
 
neighbouring areas
 
northeast China
 
perfluorobutane sulfonate
 
perfluorodecanoic acid
 
perfluorododecanoic acid
 
perfluorohexane sulfonate
 
perfluorononanoic acid
 
perfluorooctane sulfonate
 
perfluorooctanoic acid
 
perfluorotetradecanoic acid
 
received huge amount
 
river system
 
sampling sites
 
sectioned sediment core samples
 
sediment samples
 
upper 10cm surface sediment samples