Fate of tributyltin in a created tidal wetland

Anderson, Britt-Anne; Unger, Michael A.; Moore, Kenneth A.

doi:10.1002/etc.5620210609

Cited by 7 publications

(1 citation statement)

References 28 publications

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“…It was observed that TBT degradation is significantly faster (>40%) in vegetated than in nonvegetated sites (controls), the translocation to the aboveground tissues being very low. Ability of Spartina alterniflora to degrade TBT in contaminated dredged soils has been investigated in a created wetland (Anderson et al 2002). It has been observed that 0.25 mg kg −1 TBT did not inhibit plant growth over the 16-month period.…”

Section: Introductionmentioning

confidence: 99%

Ability of salt marsh plants for TBT remediation in sediments

Carvalho

Basto

Silva

et al. 2010

Environ Sci Pollut Res

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Introduction The capability of Halimione portulacoides, Spartina maritima, and Sarcocornia fruticosa (halophytes very commonly found in salt marshes from Mediterranean areas) for enhancing remediation of tributyltin (TBT) from estuarine sediments was investigated, using different experimental conditions. Methods The influence of H. portulacoides on degradation of the butyltin compounds was assessed in two different ways: (1) a 9-month ex situ study carried out in a site of Sado River estuary, center of Portugal, which used polluted sediments collected at other nonvegetated site from the same estuary; and (2) a 12-month laboratorial study, using both plant and sediment collected at a relatively clean site of Cávado River estuary, north of Portugal, the sediment being doped with TBT, DBT, and MBT at the beginning of the experiment. The role of both S. fruticosa and S. maritima on TBT remediation in sediments was evaluated in situ, in salt marshes from Marim channel of Ria Formosa lagoon, south of Portugal, which has large areas colonized by each one of these two plants. For estimation of microbial abundance, total cell counts of sediment samples were enumerated by the DAPI direct count method. Butyltin analyses in sediment were performed using a method previously validated, which consisted of headspace solid-phase micro-extraction combined with gas chromatography-mass spectrometry after in situ ethylation (with tetraethylborate). Results Sediments colonized both ex situ and at lab by H. portulacoides displayed TBT levels about 30% lower than those for nonvegetated sediments with identical initial composition, after 9-12 months of plant exposure. In addition, H. portulacoides showed to be able of stimulating bacterial growth in the plant rhizosphere, which probably included degraders of TBT. In the in situ study, which compared the levels of TBT, DBT, and MBT in nonvegetated sediment and in sediments colonized by either S. maritima or S. fruticosa from the same area, TBT and DBT were only detected in nonvegetated sediment, whereas MBT was quantified in most samples. Discussion This work demonstrated that H. portulacoides has potentiality to be used for enhancing TBT remediation in sediments from salted areas. The results observed in situ for S. maritima or S. fruticosa suggested that these two salt marsh plants also favored TBT remediation. Conclusion Therefore, the application of halophytes in technologies for TBT remediation in sediments seems to Environ Sci Pollut Res DOI 10.1007/s11356-010-0307-1 be efficient both in situ and ex situ, cost effective, and nondestructive, despite the fact that they have been rarely used for this purpose so far.

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Section: Introductionmentioning

confidence: 99%

Ability of salt marsh plants for TBT remediation in sediments

Carvalho

Basto

Silva

et al. 2010

Environ Sci Pollut Res

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Storage stability studies for tributyltin determination in human urine samples using headspace solid‐phase microextraction and gas chromatography mass spectrometry

Zachariadis

Tzollas

Nikolaou

et al. 2012

Biomedical Chromatography

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A headspace solid-phase micro-extraction (HS-SPME) method was employed in order to study the effect of storage conditions of human urine samples spiked with tributyltin (TBT) using gas chromatography and mass spectrometry. To render the analyte more volatile, the derivatization (ethylation) was made in situ by sodium tetraethylborate (NaBEt(4) ), which was added directly to dilute unpreserved urine samples and in buffers of similar acidity. The stability of TBT in human urine matrix was compared with the stability of TBT in buffer solutions of similar pH value. Critical parameters of storage conditions such as temperature and time, which affect the stability of TBT in this kind of matrix, were examined extensively. The tests showed that the stability of TBT remains practically satisfactory for a maximum of 2 days of storage either at +4 or 20°C. Greater variations were observed in the concentration of TBT in human urine samples at +4°C and lower ones at -20°C over a month's storage. The freeze-thaw cycles have negative effect on the stability and should be kept to a minimum. The results from spiked urine samples are also discussed in comparison to those acquired from buffer solutions of equal TBT concentration.

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Continuing Issues of Contamination by Organotins in the Marine Environment After Domestic and International Legislation

Takao

2016

Biological Effects by Organotins

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Fate of tributyltin in a created tidal wetland

Cited by 7 publications

References 28 publications

Ability of salt marsh plants for TBT remediation in sediments

Ability of salt marsh plants for TBT remediation in sediments

Storage stability studies for tributyltin determination in human urine samples using headspace solid‐phase microextraction and gas chromatography mass spectrometry

Continuing Issues of Contamination by Organotins in the Marine Environment After Domestic and International Legislation

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