Occurrence of perfluoroalkyl acids in environmental waters in Vietnam

Duong, Hanh Thi; Kadokami, Kiwao; Shirasaka, Hanako; Hidaka, Rento; Chau, Hong Thi Cam; Kong, Lisheng; Nguyen, Trung Quang; Nguyen, Thao Thanh

doi:10.1016/j.chemosphere.2014.11.023

Cited by 57 publications

(17 citation statements)

References 37 publications

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“…Lam et al (2017) searched for a wider range of PFASs and investigated several environmental compartments, and identified long-chain PFCAs in some sediment samples. Both studies support consistent PFAS emissions from numerous kinds of sources, including consumers products (Duong et al, 2015), industries (metal, textile, paper) and domestic waste water discharges (Lam et al, 2017). Beside PFCAs and PFSAs, FTSAs were also identified in 47-65 % of sediment samples, as well as di-PAPs (65-88%), The former compounds arise from the degradation of fluorotelomer-based substances (precursors) used, for example, in firefighting foams or food-packaging, applications and were found in waste waters in several instances (Buck et al, 2011).…”

Section: Spahssupporting

confidence: 70%

“…As mentioned above, there are a few data attesting of the contamination of HCMC waters by PFCAs and PFSAs (Duong et al, 2015;Lam et al, 2017). Concentrations up to 9.2 ng L -1 for PFHpA, 5.6 -5.8 ng L -1 for PFHxA and…”

Section: Spahsmentioning

confidence: 99%

“…To our knowledge, only two other studies attempted to capture PFAS contamination in Vietnamese aquatic environments. A nationwide study conducted in 2013 looked for 11 fluoroalkyl carboxylates (PFCAs) and five sulfonates (PFSAs) in water samples, including three sites in the Saigon River, and six in HCMC canals, rather far from the river (Duong et al, 2015). Concentrations of short-chain PFCAs (PFPeA, PFHxA and PFHpA), as well as those of PFOA or PFOS, reached several ng L -1 at some canal sites.…”

Section: A-spahsmentioning

confidence: 99%

“…PFPeA, and 18 ng L -1 for PFOA were observed at some canal sites (Duong et al, 2015). Lam et al (2017) searched for a wider range of PFASs and investigated several environmental compartments, and identified long-chain PFCAs in some sediment samples.…”

Section: Spahsmentioning

confidence: 99%

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Where has the pollution gone? A survey of organic contaminants in Ho Chi Minh city / Saigon River (Vietnam) bed sediments

et al. 2019

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A wide range of persistent organic chemicals, including polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), some insecticides, as well as polybrominated diphenyl ethers (PBDEs) and some perfluoroalkyl substances (PFASs) were analyzed in 17 bed sediments collected along the Saigon River and at adjacent canal mouths from upstream to downstream in Ho Chi Minh City (Vietnam). Concentrations were rather low for PAHs, as well as for legacy PCBs and dichloro-diphenyl-trichlorethane and metabolites (DDTs), or below detection limits for several PFASs and all PBDEs measured. Several insecticides (chlorpyrifos-ethyl, and the pyrethroids cypermethrin and λ-cyhalothrin) displayed rather high concentrations at a few sites within the city. There was no distinct upstreamdownstream trend for PAHs, (DDTs) or PCBs. Although adjacent canal sediments tended to be more contaminated than Saigon River sediments, the differences were not significant. Emissions are almost certainly substantial for PAHs, and probably also for other contaminants such as PBDEs and some PFASs. During the dry season, contaminants are presumably stored in the city, either in canals or on urban surfaces. Heavy rainfall during the monsoon period carries away contaminated particle flows into the canals and then the Saigon River. The strong tidal influence in the river channel hinders the accumulation of contaminated particles. Contaminated deposits should accordingly be investigated further downstream in depositional environments, such as the mangrove.

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Section: Spahssupporting

confidence: 70%

Section: Spahsmentioning

confidence: 99%

Section: A-spahsmentioning

confidence: 99%

Section: Spahsmentioning

confidence: 99%

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Where has the pollution gone? A survey of organic contaminants in Ho Chi Minh city / Saigon River (Vietnam) bed sediments

et al. 2019

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“…Pan et al., 2014a,b), France (e.g. Munoz et al., 2018), Korea (Lam et al., 2014), Switzerland (Huset et al., 2008), and Vietnam (Duong et al., 2015) (see Table 2b).…”

Section: Resultsmentioning

confidence: 99%

Occurrence of perfluoroalkyl substances in selected Victorian rivers and estuaries: An historical snapshot

Allinson

Yamashita

Taniyasu

et al. 2019

Heliyon

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This reconnaissance study was undertaken in 2012 to examine the occurrence of common perfluoroalkyl substances (PFAS), including perfluoroalkyl sulphonic acids and perfluoroalkyl carboxylic acids in rivers and estuaries in Port Philip Bay, Victoria, Australia. In total, 19 PFAS were screened in grab samples of water using a combination of solid phase extraction and liquid chromatography-mass spectrometry measurement techniques. Eighteen of the PFAS screened were observed in samples. The highest level of PFOS observed at a freshwater site was 0.045 μg/L; this concentration is approximately half the draft Australian 95% species protection level for total PFOS. The highest level of PFOA in the study (0.014 μg/L) was some four orders of magnitude lower than the draft Australian trigger value for PFOA (220 μg/L). However, none of the PFAS observed at the freshwater sites had research quotient (RQ) or toxicity unit (TU) values above 1 or-3, respectively. The highest concentration of PFOS observed at an estuarine site was 0.075 μg/L; the highest level of PFOA, 0.09 μg/L). There are no Australian marine water quality trigger values for PFAS, so potential risk was assessed using the European environment quality standards (EQS) adopted in EU Directive 2013/39/EU, RQ and TU methods. In that context, none of the PFAS observed at estuary sites had concentrations higher than the EU standards, or RQ above 1 or Log 10 TU above-3. Together these assessments suggest none of the PFAS screened would have posed an acute risk to organisms in the fresh or estuary waters studied at the time of sampling on an individual or collective basis. However, the detection of these PFAS in Victorian estuaries highlights that the issue is not just an issue for more densely populated countries in the northern hemisphere, but also potentially of concern in Australia. And, in that context, more sampling campaigns in Port Philip Bay are of paramount importance to assess the potential risk pose by these compounds to aquatic ecosystems.

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Perfluorooctanesulfonate (PFOS), Its Occurrence, Fate, Transport and Removal in Various Environmental Media: A Review

Dhangar

Kumar

2020

Contaminants in Drinking and Wastewater Sources

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Occurrence of perfluoroalkyl acids in environmental waters in Vietnam

Cited by 57 publications

References 37 publications

Where has the pollution gone? A survey of organic contaminants in Ho Chi Minh city / Saigon River (Vietnam) bed sediments

Where has the pollution gone? A survey of organic contaminants in Ho Chi Minh city / Saigon River (Vietnam) bed sediments

Occurrence of perfluoroalkyl substances in selected Victorian rivers and estuaries: An historical snapshot

Perfluorooctanesulfonate (PFOS), Its Occurrence, Fate, Transport and Removal in Various Environmental Media: A Review

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