Urgent caution to trace organometal pollution: Occurrence, distribution and sources of methyltins, butyltins and phenyltins in sediments from South Hangzhou Bay, China

Chen, Chunzhao; Chen, Ling; Li, Feipeng; Huang, Qinghui; Wu, Lingling; Wen, Zhang

doi:10.1016/j.envpol.2018.12.037

Cited by 20 publications

(2 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The whole pretreatment, analysis and quantification procedure was performed using our established method [18]. Briefly, 2 g of sediment powder and 10 mL of methanolacetic acid mixed solutions (v/v = 9:1, containing 0.03% tropolone) were added in a 70-mL glass vial and ultrasonic extracted for 30 min at room temperature.…”

Section: Organotin Determinationmentioning

confidence: 99%

Spatiotemporal variation and source apportionment of organotin compounds in sediments in the Yangtze Estuary

et al. 2019

Self Cite

View full text Add to dashboard Cite

Background: The Yangtze Estuary is a vital habitat and breeding ground for many rare species (e.g., Chinese sturgeon, Chinese paddlefish). From the view of marine ecosystem health, organotin compounds (OTCs) should be of great concern in this area based on their broad applications and potential threats. At present study, five OTC species were determined in 28 and 26 surface sediments from the Yangtze Estuary (including the Nearshore area, Estuarine Turbidity Maxima (ETM) zone and Plume zone) in 2015 and 2016, respectively. Meanwhile, four sludge samples were collected from the adjacent Shidongkou Wastewater Treatment Plant to perform a source apportionment. Results: The sum of OTCs presented a decreasing trend towards the open sea, averaging 4.8 ± 6.0 ng Sn g −1 dw in the Plume zone. While OTC levels in the Nearshore area (2.9-34.6 ng Sn g −1 dw) were similar with those in the ETM zone (5.6-36.0 ng Sn g −1 dw), and the sites belonging to the Deepwater Navigation Channel showed heavier contamination in the ETM zone than the Nearshore area. There are abundant suspended particles and organic matters in the ETM zone that can effectively capture the hydrophobic compounds. Besides, OTC contamination in shoreside zone was more serious than those in channel center. High OTC loads (average 633 ± 124 ng Sn g −1 dw) were also found in sludge samples from adjacent wastewater treatment plant. Conclusion: Land-based sources (e.g. sewage discharge, runoff) are probably one of the predominant pathways of OTCs entering the ocean. Combining with previous observation in 2014, OTC contamination in the same ten sites varied slightly with years. Risk assessment indicated that the concentrations of tributyltin (TBT) are sufficient to pose ecosystem threats especially in the ETM zone. Hence, OTC contamination issues in the Yangtze Estuary still can not be neglected.

show abstract

Section: Organotin Determinationmentioning

confidence: 99%

Spatiotemporal variation and source apportionment of organotin compounds in sediments in the Yangtze Estuary

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, these large populations generate high levels of pollution, which is discharged into the ocean and can have significant effects on the natural environment. As a result, semi-enclosed seas around the world often face environmental problems [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Combined Effect of Tides and Wind on Water Exchange in a Semi-Enclosed Shallow Sea

Shang

Sun

Tao

et al. 2019

Water

View full text Add to dashboard Cite

The Bohai Sea is a semi-enclosed shallow sea in China, where the tides and wind are the dominant factors contributing to the water exchange with the Yellow Sea. However, existing studies on this water exchange primarily consider only the effect of tidal action, neglecting the contribution of wind. In this study, numerical models were used to simulate the hydrodynamic processes and tracer transport, with the consideration of both tides and wind. Based on the models, the two time scales, age and half-life, are applied to study the water exchange in the Bohai Sea quantitatively. The results show that the age and half-life decrease significantly when wind is included in the simulation, revealing that wind is an important contributor to the water exchange in such a semi-enclosed shallow sea. Under the combined forcing of tides and wind, the water transport in the Bohai Sea becomes clockwise, in contrast with the counterclockwise transport driven by the tides only. The seasonal-varying wind leads to a fluctuation of water exchange in an annual cycle, with the stronger water exchange in the northern (Liaodong Bay) and the western (Bohai Bay) regions of the Bohai Sea in winter and in the southern part (Laizhou Bay) in summer.

show abstract

Biogeochemistry of sedimentary organic matter in the Yongjiang River estuary in the southern part of Hangzhou Bay, China, since the Late Pleistocene

Huang,

Li,

et al. 2024

J. Ocean. Limnol.

View full text Add to dashboard Cite

Urgent caution to trace organometal pollution: Occurrence, distribution and sources of methyltins, butyltins and phenyltins in sediments from South Hangzhou Bay, China

Cited by 20 publications

References 47 publications

Spatiotemporal variation and source apportionment of organotin compounds in sediments in the Yangtze Estuary

Spatiotemporal variation and source apportionment of organotin compounds in sediments in the Yangtze Estuary

Combined Effect of Tides and Wind on Water Exchange in a Semi-Enclosed Shallow Sea

Biogeochemistry of sedimentary organic matter in the Yongjiang River estuary in the southern part of Hangzhou Bay, China, since the Late Pleistocene

Contact Info

Product

Resources

About