Chlorinated and polycyclic aromatic hydrocarbons in riverine and estuarine sediments from Pearl River Delta, China

Mai, Bi-Xian; Fu, Jiamo; Sheng, Guoying; Kang, Yunyi; Zheng, Lin; Zhang, Gan; Min, Yi; Zeng, Eddy Y.

doi:10.1016/s0269-7491(01)00193-2

Cited by 417 publications

(186 citation statements)

References 47 publications

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“…Concentration levels of total 16 PAHs in surface sediments from different locations in Meiliang Bay, Taihu Lake, were close to those found at the Bohai Sea and Yellow Sea in China (877 -5730 ng/g) ( Table 1) (Ma et al, 2001) and higher than those found in sediments of some rivers in China, such as Yalujiang River (68 -1500 ng/g) (Wu et al, 2003) and Minjiang River Estuary (112 -877 ng/g) (Zhang et al, 2004a,b). However, the levels were lower than those reported in urbanized and industrialized areas, such as Pearl River (1434 -10,811 ng/g) (Mai et al, 2002), the Macao Harbor (294 -12,714 ng/g) (Mai et al, 2002), the Kiel Harbor (3 -30,000 ng/g) (Baumard et al, 1999), and the Ý zmit Bay, Turkey (250 -25,000 ng/g) (Tolun et al, 2001). …”

Section: Pah Concentrationsmentioning

confidence: 59%

Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China

Qiao

Wang

Huang

et al. 2006

Environment International

376

147

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Section: Pah Concentrationsmentioning

confidence: 59%

Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China

Qiao

Wang

Huang

et al. 2006

Environment International

376

147

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“…The extraction temperature was 120°C, and the pressure was 1500 psi. The elution and extract of each sample was concentrated, solvent-changed, and purified with a 1:2 alumina-to-silica gel ratio as previously reported (Mai et al, 2002). 2-fluorobiphenyl was added to the samples as an IS prior to instrumental analysis.…”

Section: Pah Analysismentioning

confidence: 99%

Organic micropollutants in the Yangtze River: Seasonal occurrence and annual loads

Müller

Pernet-Coudrier

et al. 2014

Science of The Total Environment

102

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• The Yangtze River drains 40% of China's mainland with 400 million inhabitants • Monthly concentrations and annual loads of organic pollutants were determined • Seasonality of loads of PAHs, most pesticides, and antiinfectives were concise • In spite of low concentrations due to high water discharge, pollutant loads are considerable a b s t r a c t a r t i c l e i n f o Twenty percent of the water run-off from China's land surface drains into the Yangtze River and carries the sewage of approximately 400 million people out to sea. The lower stretch of the Yangtze therefore offers the opportunity to assess the pollutant discharge of a huge population. To establish a comprehensive assessment of micropollutants, river water samples were collected monthly from May 2009 to June 2010 along a crosssection at the lowermost hydrological station of the Yangtze River not influenced by the tide (Datong Station, Anhui province). Following a prescreening of 268 target compounds, we examined the occurrence, seasonal variation, and annual loads of 117 organic micropollutants, including 51 pesticides, 43 pharmaceuticals, 7 household and industrial chemicals, and 16 polycyclic aromatic hydrocarbons (PAHs). During the 14-month study, the maximum concentrations of particulate PAHs (1-5 μg/g), pesticides (11-284 ng/L), pharmaceuticals (5-224 ng/L), and household and industrial chemicals (4-430 ng/L) were generally lower than in other Chinese rivers due to the dilution caused of the Yangtze River's average water discharge of approximately 30,000 m 3 /s. The loads of most pesticides, anti-infectives, and PAHs were higher in the wet season compared to the dry season, which was attributed to the increased agricultural application of chemicals in the summer, an elevated water discharge through the sewer systems and wastewater treatment plants (WWTP) as a result of high hydraulic loads and the related lower treatment efficiency, and seasonally increased deposition from the atmosphere and runoff from the catchment. The estimated annual load of PAHs in the river accounted for some 4% of the total emission of PAHs in the whole Yangtze Basin. Furthermore, by using sucralose as a tracer for domestic wastewater, we estimate a daily disposal of approximately 47 million m 3 of sewage into the river, corresponding to 1.8% of its average hydraulic load. In summary, the annual amounts flushed by the Yangtze River into the East China Sea were 2.9 × 10 6 tons of dissolved and particulate organic carbon (DOC and POC), 369 tons of PAHs, 98 tons of pesticides, 152 tons of pharmaceuticals, and 273 tons of household and industrial chemicals. While the concentrations seem comparably moderate, the pollutant loads are considerable and pose an increasing burden to the health of the marine coastal ecosystem.

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“…However, possible point pollution source could not be excluded just based on the results described above, because these pollution events are usually site and situation specific, occur on a relatively small scale, and are typically driven by water runoff. In addition, several recent studies reported high DDT residues in sediments or animal tissues, and revealed a new input of DDT, especially in South China (Klumpp et al, 2002;Mai et al, 2002;Wu et al, 1999;Ma et al, 2001). …”

Section: Compositions Of Hch and Ddtmentioning

confidence: 99%

Occurrence and distribution of organochlorine pesticides (HCH and DDT) in sediments collected from East China Sea

Yang

Jiang

Zhou

et al. 2005

Environment International

136

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Sediments used in this study were collected from different depths of eight sites in East China Sea in November 2002. The levels and distribution patterns of the selected organochlorine pesticides (OCPs = p,pV-DDT, o,pV-DDT, p,pV-DDE, p,pV-DDD, a-, h-, g-and y-HCH) in samples were investigated by the technique of sonication extraction followed by the analysis of gas chromatography (GC) coupled with a micro-electron capture detector (AECD). The concentrations of AHCH and ADDT in the surface sediments were in the range of < 0.05 -1.45 ng/g (mean 0.76 ng/g), < 0.06 -6.04 ng/g (mean 3.05 ng/g) based on dry weight (dw), respectively. In the vertical distributions, the AHCH and ADDT were in the range of < 0.05 -2.52 ng/g, < 0.06 -10.94 ng/g dw, respectively. Residues of OCPs varied significantly with different sampling sites. ADDT in the surface sediments was correlated well with total organic carbon (TOC) content (r 2 = 0.71), while AHCH showed no obvious correlation. The distribution showed that the sediments from the vicinity estuary or near shore had higher TOC contents, and higher OCPs concentrations. The contamination record indicated an extensive use of OCPs in the catchments from Yangtze River in the past might greatly affect the OCP residues. D

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Chlorinated and polycyclic aromatic hydrocarbons in riverine and estuarine sediments from Pearl River Delta, China

Cited by 417 publications

References 47 publications

Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China

Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China

Organic micropollutants in the Yangtze River: Seasonal occurrence and annual loads

Occurrence and distribution of organochlorine pesticides (HCH and DDT) in sediments collected from East China Sea

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