Linear alkylbenzenes in riverine runoff of the Pearl River Delta (China) and their application as anthropogenic molecular markers in coastal environments |
| |
Authors: | Ni Hong-Gang Lu Feng-Hui Wang Ji-Zhong Guan Yu-Feng Luo Xian-Lin Zeng Eddy Y |
| |
Institution: | a State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, P.O. Box 1131, Wushan, Guangzhou 510640, China b School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China c Graduate School, Chinese Academy of Sciences, Beijing 100049, China |
| |
Abstract: | The average concentrations of ∑LABs (sum of C10-C13-LABs) in runoff samples collected from the eight major riverine outlets of the Pearl River Delta (PRD) of China ranged from 1.4 to 6124 ng/L in the dissolved phase and from 0.01 to 11.4 μg/g dry weight in the particulate phase during March 2005-February 2006. The annual riverine flux of ∑LABs from the PRD to the coastal ocean was estimated at approximately 14 tons/yr. The inventories of ∑LABs in agricultural lands of Guangdong Province ranged from 313 to 1825 kg/yr. The early and late rice fields were the major sink of LABs, accounting for approximately 68% of total LABs inventory in agricultural lands. The social-economically estimated annual discharge of LABs from household detergents in the PRD was ∼696 tons/yr, more than an order of magnitude higher than that estimated from field measurements (about 14 tons/yr), which was attributed to several factors. |
| |
Keywords: | Linear alkylbenzenes Molecular marker Riverine flux Inventory Pearl River Delta |
本文献已被 ScienceDirect PubMed 等数据库收录! |
|