Accumulation of butyltin compounds in finless porpoises (Neophocaena asiaeorientalis) from Korean coast: Tracking the effectiveness of TBT regulation over time

Choi, Minkyu; An, Yi; Park, Kyum Joon; Lee, In-Seok; Hwang, Dong-Woon; Kim, Jinyu; Moon, Hyo‐Bang

doi:10.1016/j.marpolbul.2012.11.007

Cited by 15 publications

(8 citation statements)

References 37 publications

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“…TBT is still found in levels that give rise to imposex in molluscs as was shown in a recent study around the Korean coast (Choi et al 2013a). Bioaccumulation of TBT is indicated by high levels in the liver (average 37 mg/kg wet weight) of the mammal finless porpoises (Neophocaena asiaeorientalis) (Choi et al 2013b). With the high concentrations of organotin compounds at this and other boatyards, the risk of leaching into to the water is clear.…”

Section: Toxicity Of Contaminants Found In Boatyardsmentioning

confidence: 82%

Contamination of a boatyard for maintenance of pleasure boats

2014

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Purpose The object of this study was to study a boat maintenance facility by investigating the degree of contamination and assessing how leachate water from soil affects organisms from three trophic levels. Materials and methods Surface and subsurface (20-cm depth) soil samples were collected in a typical boatyard (200 boats, 12,000 m 2 ) at a 70-(station A), 90-(station B), 120-(station C) and 160-m (station D) distance from the shoreline. Three replicate samples, ∼10 m apart, were taken at stations A, B and C, respectively, and one replicate was taken at station D (i.e. altogether 20 samples with 10 at surface and subsurface, respectively). The total copper (Cu), lead (Pb), tin (Sn) and zinc (Zn) concentrations were determined for all replicates. Pooled samples from the respective stations were used for analysis of organotin compounds, irgarol and polyaromatic hydrocarbons. Leachate waters were produced from the pooled samples and used for toxicity testing with the bacterium Vibrio fischeri, the macroalga Ceramium tenuicorne and the crustacean Nitocra spinipes. Results and discussion Very high concentrations of Cu, Pb, Zn were detected, with maximum values of 16,300, 6,430 and 18,600 mg/kg dw, respectively. Organic hazardous compounds were found in high concentrations with maximum values of 37, 27 and 16 mg/kg dw for tributytin (TBT), dibutyltin (DBT) and triphenyltin (TPhT), respectively. All pollutants exceeded existing guidance values for both sensitive land use and less sensitive land use by several factors, in both surface and subsurface soil. The least and worst cases of total amount of TBT (12 000 m 2 and 0.2 m depth) were estimated to be 10 and 122 kg of TBT. Leachates were shown to be toxic in all three test organisms. Conclusions Several known hazardous pollutants were found in boatyard maintenance areas and they exceeded recommended guidance values by several factors. Leachates were shown to be toxic to test organisms of several trophic orders. This underlines that boat maintenance facilities in general should be better regulated to minimize further exposure to humans and spread of contaminants in the environment. The amounts of contaminants accumulated in these areas call for investigations of how remediation should be performed.

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Section: Toxicity Of Contaminants Found In Boatyardsmentioning

confidence: 82%

Contamination of a boatyard for maintenance of pleasure boats

2014

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“…In vitro studies suggest that TBT may cause immunotoxicity, teratotoxicity and neurotoxicity in mammals, including humans. Choi et al, (2013) Anastasiou et al, (2016) reported high imposex frequency in Hexaplex trunculus and Nassarius nitidus collected from collected from the ports of Cagliari (Italy), El Kantaoui (Tunisia) and Olhão and Faro (Portugal), showing as in ports of Atlantic Ocean and Mediterranean Sea the contamination is still active. Imposex in gastropods (Acanthina monodon, Oliva peruviana and Xanthochorus cassidiformis) has been reported by Batista et al, (2016) in three areas along the central Chilean coast.…”

Section: Environmental Concernmentioning

confidence: 99%

Organotin compounds in marine sediment: Detection and concerns

2018

Global NEST Journal

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The determination of organotin compounds (OTCs) in environmental matrices has been subject to great scientific attention during last years, as the accuracy and sensitivity of analytical methods need to be improved in order to be able to detect the compounds of interest in a complex matrix such as sediment. The European Union Water Framework Directive (2013/39/EU) sets very restrictive environmental quality standards for 45 priority substances and other pollutants, including OTCs. Therefore, it is necessary to develop analytical methods in compliance with the environmental quality standard (EQSs) proposed to protect the aquatic environment and human beings. So far various analytical procedures have been used, including gas chromatographic analyses. Most of these methods comprise different steps such as extraction, derivatisation, clean up and the use of several sophisticated instrumentations, as well. Among them the conversion of tributyltin into Sn to allow its determination by Atomic Absorption Spectrometry or Anodic Stripping Voltammetry (AVS) has also been attempted. A great number of studies have been performed on OTCs analysis in marine sediment. However, the only review available in literature discussing the upgrades of analytical methods is dated back to 1997. We reviewed the analytical procedures and discussed them comparatively in order to identify the current state-of-theart in OTCs detection. Finally, environmental concerns about OTCs were discussed.

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“…Such approach was especially interesting to not lose the information concerning the two phases, NH 2 /C18 and SCX, whose data were mostly unusable for model development. Therefore, to include in data treatment the information associated with the experiments previously excluded (n. 3,6,8,14,15,20,23,24,25,27,32,33), we have defined another way to express the results, the "blank to signal" …”

Section: Models To Fit the Experimental Datamentioning

confidence: 99%

“…In fact, when the acquired isotopic signal is too low or if there is a blank contamination, the raw data cannot be processed as the application of the isotope dilution equation results in negative or largely overestimated TBT mass fractions. The presence of considerable amounts of TBT in the analytical blanks, giving rise to average blank signals of about 15700 cps on the isotope 120, was the reason for the following experiments giving false results: n 3,8,14,15,20,24,33…”

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confidence: 99%