US EPA

3981690 

Journal Article 

Perfluoroalkyl substances in waters along the Grand Canal, China 

Piao, HT; Jiao, XC; Gai, N; Chen, S; Lu, GH; Yin, XC; Yamazaki, E; Yamashita, N; Tan, KY; Yang, YL; Pan, J 

2017 

Yes 

Chemosphere
ISSN: 0045-6535
EISSN: 1879-1298 

179 

387-394 

English 

28390306 

10.1016/j.chemosphere.2017.03.133 

WOS:000401385900040 

is supplemented by 11374540 : Supplementary information

The Grand Canal, also known as the Beijing-Hangzhou Grand Canal, is a UNESCO World Heritage Site and the longest canal in the world. It is an important trunk line of the South-to-North Water Diversion Project in China. The contamination status and spatial distributions of perfluoroalky substances (PFASs) in waters of the Grand Canal were investigated. The total concentrations of PFASs (∑PFASs) range from 7.8 ng/L to 218.0 ng/L, with high ∑PFASs occurring in the southern part of the Grand Canal which is located in a highly urbanized and economically developed region. The dominance of PFOA showed a decreasing trend toward north while shorter chain homologue proportions increased in the northern part of the Canal which mainly traverses underdeveloped and rural areas in Eastern China. Positive correlations were observed between ∑PFASs and the population density as well as GDP per capita. Intersection with large rivers may affect the contamination levels and composition of PFASs in the water of the Grand Canal near the intersection sites.