Status of persistent organic pollutants in the sediment from several estuaries in China

Yuan, Dongxing; Yang, Dongning; Wade, Terry L.; Qian, Yongchang

doi:10.1016/s0269-7491(00)00200-1

Cited by 187 publications

(78 citation statements)

References 23 publications

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“…The recorded concentrations of total PAHs in sediment samples range from 156 to 10,811 ng/g Mai et al, 2001). The concentration of total PAHs in Pearl estuaries are found to be low compared with those reported for other industrialized countries, indicating that the PAH pollution in the sediment samples are moderate compared to developed countries (Yuan et al, 2001). The alkylated/non-alkylated ratio is about 2 and the high molecular weight (HMW)/low molecular weight (LMW) ratio is 1 or so.…”

Section: Polycyclic Aromatic Hydrocarbons (Pahs)mentioning

confidence: 71%

“…It is noted that refined petroleum products comprises primarily LMW PAHs and alkylated PAHs. The relatively high alkylated/non-alkylated ratio and relatively low HMW/LMW indicate that the major PAH pollution was contributed by petroleum input (Yuan et al, 2001). This phenomenon might be explained by the heavy harbor commercial as well as industrial shipping activities, including ship discharges and accidental oil spills in the estuary.…”

Section: Polycyclic Aromatic Hydrocarbons (Pahs)mentioning

confidence: 99%

“…Sources of TBT in coastal water as well as sediments can be primarily attributed to the leaching from ship paint. The concentrations of TBT found in the sediment samples range from 2 to 380 ng/g (Yuan et al, 2001). Moreover, concentrations of dibutyltin (DBT) and monobutyltin (MBT), as the naturally degraded forms of TBT, have values of 2 ng/g and 13 ng/g, respectively.…”

Section: Butyltinsmentioning

confidence: 99%

“…The TBT concentration is found to range from 21-39 ng/l in surface water and 5-19 ng/g in marine organisms, respectively (Yuan et al, 2001). These relatively low values may suggest that TBT contamination is not particularly serious in this estuary.…”

Section: Butyltinsmentioning

confidence: 99%

“…It will serve as an assessment of the current status, distribution, severity, fate, and environmental consequence of detected contaminants, thus furnishing possible insight as well as future directions for global and strategic environmental management of the region. Table 1 shows a summary of concentrations of various POPs in different carrying media of Pearl River delta from existing literature (Cheng et al, 2000;Fang et al, 2001;Fu et al, 2001;Hong et al, 1999;Kang et al, 2000;Mai et al, 2001;Wu et al, 1999;Yuan et al, 2001;Zheng et al, 2001;Zhou et al, 2001). Owing to the apparent significance of sediment phase in the fate and transport of contaminants, previous research efforts have mainly been focused on surficial sediments in assessing the pollution of water bodies.…”

Section: Introductionmentioning

confidence: 99%

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Characterization of transboundary POP contamination in aquatic ecosystems of Pearl River delta

Chau

2005

Marine Pollution Bulletin

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During the past two decades, the rapid development of the Pearl River delta leads to substantial accumulation of various toxic organic compounds. This study aims to give a preliminary characterization of the existing state of contamination in this region and to provide insight into the possible fate of persistent organic pollutants (POPs) in this estuary. The available data on POPs in water, river, estuarine sediments, soil, and marine organisms within the Pearl River Delta are compiled. It is shown that it may lead to transboundary POP pollution problems at both Hong Kong and Macau Special Administration Regions located at the downstream end of the region. It is noted that the levels of DDTs and HCHs in various environmental media are at alerting levels and that fresh DDT might still be applied illegally within the region. A systematic research is required to determine both the temporal and spatial variations of all POPs in various carrying media of the Pearl River delta as a whole.

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Section: Polycyclic Aromatic Hydrocarbons (Pahs)mentioning

confidence: 71%

Section: Polycyclic Aromatic Hydrocarbons (Pahs)mentioning

confidence: 99%

Section: Butyltinsmentioning

confidence: 99%

Section: Butyltinsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization of transboundary POP contamination in aquatic ecosystems of Pearl River delta

Chau

2005

Marine Pollution Bulletin

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Effects of tributyltin exposure in hermit crabs: Clibanarius vittatus as a model

Sant’Anna¹,

Santos²,

Marchi³

et al. 2012

Enviro Toxic and Chemistry

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Tributyltin (TBT) contamination affects the reproductive system of many species of invertebrates worldwide. The present study was designed to evaluate the effects of exposure to TBT pollution on the reproduction of the hermit crab Clibanarius vittatus. An orthogonal experiment was designed with two treatments: contamination (with or without TBT in the food) and crab sex (males and females). The animals were reared in the laboratory for nine months, and macroscopic and histological analyses of reproductive organs were carried out after the end of the experiment. Tributyltin was recorded in exposed crabs, but no morphological alterations were detected in the gonads of males, regardless of whether they were exposed to TBT. In contrast, females exposed to TBT displayed disorganization and atrophy of their ovaries, thus directly affecting reproduction in this hermit crab species. This effect observed in female hermit crabs may harm populations located in harbor regions, where TBT concentration is high, even after the worldwide TBT ban.

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Pollution Studies on Mangroves in Hong Kong and Mainland China

Tam

2006

The Environment in Asia Pacific Harbours

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Status of persistent organic pollutants in the sediment from several estuaries in China

Cited by 187 publications

References 23 publications

Characterization of transboundary POP contamination in aquatic ecosystems of Pearl River delta

Characterization of transboundary POP contamination in aquatic ecosystems of Pearl River delta

Effects of tributyltin exposure in hermit crabs: Clibanarius vittatus as a model

Pollution Studies on Mangroves in Hong Kong and Mainland China

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