Concentration Levels and Ecological Risks of Persistent Organic Pollutants in the Surface Sediments of Tianjin Coastal Area, China

Lu, Xiaofan; Chen, Chaoqi; Zhang, Shu; Hou, Zhen; Yang, Junjun

doi:10.1155/2013/417435

Cited by 15 publications

(7 citation statements)

References 26 publications

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“…Fresh surface sediment (b5 m depth) and river water were sampled from Hai River in Tianjin, China in December of 2012. The geographic information of the sampling location and chemical parameters were previously reported (Lu et al, 2013). Sediment samples were collected in zip-lock bags with enough headspace for aeration and river water was saved in polypropylene containers.…”

Section: Sediment Collectionmentioning

confidence: 99%

Impact of 6:2 fluorotelomer alcohol aerobic biotransformation on a sediment microbial community

Shu

Merino

Wang³

et al. 2017

Science of The Total Environment

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Sediment microbial communities are responsible for many chemical biotransformation processes in the aquatic environment and play a critical role in various ecosystems and biogeochemical cycling. However, the impact of polyfluoroalkyl substances on sediment microbial communities remains unclear. These substances are increasingly being used in consumer and industrial products to replace environmentally persistent perfluoroalkyl substances. In this study, we investigated the effects of low (5mg/L) and high (15mg/L) doses of 6:2 fluorotelomer alcohol [6:2 FTOH, F(CF)CHCHOH] on the structure of a sediment microbial community. 6:2 FTOH biotransformation was rapid in the sediment mixture with a half-life <3days, regardless of the initial doses. After 28days, major products produced in the high dose condition included 28mol% 5:2 sFTOH [F(CF)CH(OH)CH], 9.6mol% 5:3 Acid [F(CF)CHCHCOOH] and 11mol% PFHxA [F(CF)COOH], while 73mol% 5:2 sFTOH, 23mol% 5:3 Acid and 26mol% PFHxA were observed in the low dose condition. In the original (control) sediment without 6:2 FTOH dosing, Proteobacteria was the predominant microorganism (18%), followed by Chloroflexi (14%), Verrucomicrobia (13%), Firmicutes (3.4%), Bacterioidetes (2.4%), Actinobacteria (1.7%) and Planctomycetes (1.3%). The presence of 6:2 FTOH and the accumulation of transient transformation products in the sediment exerted selection pressure on the microbial taxonomic distribution and diversity. Our observations indicate that potential 6:2 FTOH degraders and tolerant strains, such as Dokdonella spp., Thauera spp., Albidovulum spp. and Caldanaerovirga spp., existed in the sediment mixture and began to dominate over time. This suggests that these genera might have higher tolerance towards elevated 6:2 FTOH and its transformation products. These findings on the characterization of sediment microbial community stability and dynamics will help predict changes in response to perfluoroalkyl and polyfluoroalkyl substances and also help identify robust microbial strains to degrade polyfluoroalkyl substances in the environment.

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Section: Sediment Collectionmentioning

confidence: 99%

Impact of 6:2 fluorotelomer alcohol aerobic biotransformation on a sediment microbial community

Shu

Merino

Wang³

et al. 2017

Science of The Total Environment

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“…POPs are a general term for organic pollutants synthesized by humans, with four characteristics of long-term residual, bioaccumulative, semi-volatile and highly toxic [54,55] . Persistent organic pollutants are extremely difficult to degrade and can exist in nature for a long time.…”

Section: Detection Of Organochlorine Pesticide Pollution 41 Organochmentioning

confidence: 99%

“…For example, the concentration of POPs is found in water samples from the Taihu Lake region and the Tianjin coastal region. The sediments in the Hudso River and the Humber River in the United Kingdom are also highly concentrated [54,55] ; 14 kinds of organochlorine pesticides such as HCHs, DDTs and endosulfan II were detected in the tissues of the mites on the migration route of East Asia-Australia, among which α-HCH, β-HCH and γ-HCH were checked out. The detection rates of p,p'-DDE, endosulfan II, endosulfan sulfate and/or p,p'-DDT are all 100% [59] .…”

Section: Figure 7 Pie Chart Of Controlled Pops Listmentioning

confidence: 99%

Sensing technologies for detection of non-point source pollutants in rice paddy fields

Zhang

Wang

et al. 2018

International Journal of Precision Agricultural Aviation

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With increased input in agriculture, the excessive use of pesticides and fertilizers has caused various pollutions in farmland. Non-point source pollution in agriculture, especially in paddy fields, has been a serious threat to the health of water environment. Therefore, the rapid detection and analysis of important pollutants in the paddy water environment is of great significance for controlling agricultural non-point source pollution and avoiding the occurrence of large-scale water pollution disasters in the future. Based on the detection method of non-point source pollutants in rice fields, this paper introduces the pollution and harm caused by eutrophication of water body, nitrate pollution of groundwater, organochlorine and organophosphorus pesticide residues. The advantages and disadvantages of the above four pollutants detection methods and their application status in rapid, on-line detection or satellite remote sensing monitoring are summarized, and future research is prospected. The detection methods of non-point source pollutants in the paddy water environment can solve the problem of detecting substances well, but they all need to be sampled back to the laboratory, and the timeliness is poor, which cannot meet the requirements of fast real-time. For some of the on-site inspection instruments, their volume and portability are currently problems to be solved. To solve the problem of online or rapid detection of non-point source pollutants in rice water environment, we need to start from the following four aspects: strengthen fast online real-time monitoring technology, develop water pollutant detection sensors, research wireless sensor network technology and combine UAV airborne remote sensing technology. In the future, strengthening the research of online real-time detection technology will provide a theoretical basis for the online, rapid and accurate determination of pollutants in rice fields and the development of related rapid detection instruments.

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“…The greatest concentration of PBDEs was detected in the Bailong River, Laizhou Bay, with concentrations as great as 1800 ng g À1 dw (Jin et al, 2008;Pan et al, 2011a). In areas adjacent to Bohai Bay, rivers flowing into the Bohai Sea were most heavily contaminated by PBDEs, with the highest concentration of 42.79 ng g À1 dw (Gan, 2010;Lu et al, 2007aLu et al, , 2012Pan et al, 2010;Song et al, 2016;Zhao et al, 2012). Three studies were conducted to investigate PBDEs in sediment in the Liaohe River Basin.…”

Section: Pbdesmentioning

confidence: 99%

Traditional and new POPs in environments along the Bohai and Yellow Seas: An overview of China and South Korea

et al. 2017

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Rapid economic growth during the past two decades in the region surrounding the Bohai and Yellow Seas has resulted in severe pollution. Large amounts of monitoring data on persistent organic pollutants (POPs) in various environmental media have been accumulated, which allows us to conduct a fairly comprehensive assessment of the region around the Bohai and Yellow Seas to elucidate spatial patterns of pollution on a regional scale. This review summarized distributions of traditional and new POPs, including organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), hexabromocyclododecanes (HBCDs), and perfluoroalkyl substances (PFASs), in various environmental media. In general, due to their physico-chemical properties (poor solubility in water), OCPs and PCBs were mainly detected in sediments, PBDEs and HBCDs were mainly detected in sediments and soils. PFASs, which have greater solubility, were mainly detected in the hydrosphere. For conventional POPs, such as OCPs and PCBs, Bohai Bay and Haihe River in China, Gyeonggi Bay and Lake Sihwa in South Korea were found to be most polluted areas. While for new POPs, such as PBDEs, HBCDs and PFASs, some areas were heavily polluted due to local production and applications. Estuarine and coastal areas of the Bohai Sea were more severely contaminated by POPs than coastal regions of the Yellow Sea. Overall, the present review will guide identification of key areas for strengthening risk assessment of POPs and management practices.

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Concentration Levels and Ecological Risks of Persistent Organic Pollutants in the Surface Sediments of Tianjin Coastal Area, China

Cited by 15 publications

References 26 publications

Impact of 6:2 fluorotelomer alcohol aerobic biotransformation on a sediment microbial community

Impact of 6:2 fluorotelomer alcohol aerobic biotransformation on a sediment microbial community

Sensing technologies for detection of non-point source pollutants in rice paddy fields

Traditional and new POPs in environments along the Bohai and Yellow Seas: An overview of China and South Korea

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