Residues of organochlorine pesticides in water and suspended particulate matter from the Yangtze River catchment of Wuhan, China

Abstract

The residues of 13 organochlorine pesticides (OCPs) in surface water and HCHs and DDTs in suspended particulate matter (SPM) from rivers and lakes in Yangtze River catchment of Wuhan, China, were investigated. The concentration of total OCPs in surface water varied from 1.01 to 46.49 ng l(-1) (mean 10.55 ng l(-1)). The levels of total HCHs (SigmaHCH) and total DDTs (SigmaDDT) in surface water were in the range of 0.55-28.07 ng l(-1) and lower than detection limit to 16.71 ng l(-1), respectively, which was lower than Chinese standards on the whole. For OCPs residues in SPM, the mean levels varying from 0.20 to 34.72 ng l(-1) and 0.46 to 2.72 ng l(-1) for SigmaHCH and SigmaDDT, respectively, which ranked the relatively higher levels among Chinese studied rivers. Results from this investigation showed that previous excessive usage of technical OCPs was the main reason for the residues of HCHs and DDTs both in surface water and SPM, although some new sources were likely to occurred in the region. Apart from the OCPs in SPM originated from upstream in flood season, one of the important sources of OCP residues both in water and SPM in Yangtze River was supposed to be the inputs of its tributaries. Additionally, in situ water-SPM phase distributions of OCPs indicated that HCHs tended to transport (correction of totransport) with water as well as DDTs was prone to combine with SPM in Yangtze River catchment of Wuhan.

Ecological Risk Assessment of Organochlorine Pesticides in Surface Waters of Lake Taihu, China

“…To understand the current contamination status of OCPs in the study areas, the concentrations of OCPs measured in surface water of Lake Taihu were compared with the results from other surface waters (Table 2). As seen in Table 2, the concentrations of individual OCPs in Lake Taihu (this study) were lower than those reported in Minjiang River (Zhang et al 2003), Qiantang River , Tonghui River (Zhang et al 2004), Lake Xihu (Liang et al 2008), Jiulongjiang River (Zhang et al 2001), Liaohe River , Daliaohe River (Li et al 2009), Suzhouhe River (Hu et al 2005), Pearl River (Yang et al 2004), Yangtze River (Tang et al 2008), Haihe River (Wang et al 2007), and Guangting Reservoir-Yongding River (Kang et al 2003) in China. The average concentrations of γ -HCH and DDTs were found to be lower in Lake Taihu in this study than the previous study conducted by Ta et al (2006).…”

Organochlorine pesticides in soil, water and sediment along the Jinjiang River mainstream to Quanzhou Bay, southeast China

“…These levels are nearly same as the Yangtze River (0.55-28.07 ng/L) (Tang et al, 2008) and the Liaohe River (6.19-35.19 ng/L) (Gawlik et al, 2000), higher than the Huihe River (0.47-6.13 ng/L) (Feng et al, 2011), but lower than the Qiantang River (0.74-543.1 ng/L) (Zhou et al, 2008). When compared with other rivers over the world, concentration of HCHs in water from the Jinjiang River was similar to that of the Nestos River, Greek (n.d. À 68.00 ng/L) (Golfinopoulos et al, 2003) and much lower than the Giomti River, India (0.02-4846.00 ng/L) (Singh et al, 2005) and the Kucuk Menderes River, Turkey (187.00-337.00 ng/L) (Turgut, 2003).…”

Sources, concentrations and risk factors of organochlorine pesticides in soil, water and sediment in the Yellow River estuary

“…∑DDT concentrations in surface water samples were higher than that in Ebro River, Spain (3.40 ug/L) (Fernandez et al, 1999), while lower than those in the Yangtze River (nd-16.71 ug/L) (Tang et al, 2008), Huaihe River (4.44-33.59) (Feng et al, 2011) and Nestos River, Greece (nd-64.00 ug/L) (Golfinopoulos et al, 2003), and much lower than those in the Qiantang River (nd-204.1 ug/L) (Zhou et al, 2006), Gomti River, India (0.20-4578.00 ug/L) (Malik et al, 2007), and Kucuk Menderes River, Turkey (72-120 ug/L) (Turgut, 2003).…”

“…∑HCH concentrations of the 29 surface water samples were higher than those in Peacock River, Xin Jiang Province (nd-19.00 ug/L) (Chen et al, 2011) and Huaihe River (0.47-6.13 ug/L) (Feng et al, 2011), while lower than those in the Yangtze River (0.55-28.07 ug/L) (Tang et al, 2008), Qiantang River (0.74-543.1 ug/L) (Gong et al, 2004a,b), Nestos River, Greece (nd-68.00 ug/L) (Golfinopoulos et al, 2003) and much lower than those in the Gomti River, India (0.02-4846.00 ug/L) (Malik et al, 2007) (Table 4). ∑DDT concentrations in surface water samples were higher than that in Ebro River, Spain (3.40 ug/L) (Fernandez et al, 1999), while lower than those in the Yangtze River (nd-16.71 ug/L) (Tang et al, 2008), Huaihe River (4.44-33.59) (Feng et al, 2011) and Nestos River, Greece (nd-64.00 ug/L) (Golfinopoulos et al, 2003), and much lower than those in the Qiantang River (nd-204.1 ug/L) (Zhou et al, 2006), Gomti River, India (0.20-4578.00 ug/L) (Malik et al, 2007), and Kucuk Menderes River, Turkey (72-120 ug/L) (Turgut, 2003).…”

“…In the last decades, with the rapid economic development in Asian countries, environmental pollution caused by OCPs has been identified in several delta areas, e.g., the Mekong Delta (Sudaryanto et al, 2011), the Pearl River Delta (Li et al, 2006), and the Yangtze River Delta (Tang et al, 2008). Most investigations of pollutants in the YRD have focused on hydrocarbon, nitrate, PCB, and trace metal pollutants Chen et al, 2007;Wang et al, 2009b); few reports of OCP concentrations in the YRD are available.…”