Survey of butyltin contamination in Portuguese coastal environments

Cortez, L.; Quevauviller, Ph.; Martin, F.; Donard, Olivier F. X.

doi:10.1016/0269-7491(93)90162-h

Cited by 24 publications

(9 citation statements)

References 10 publications

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“…Figure 3 compares values which have been found at Sado estuary in different dates. TBT level observed in this work at Lisnave site was much lower than what has been observed for the same area in 1990 [520 ng/g TBT (Cortez et al 1993)]. At Comporta area, TBT concentration observed presently was similar to those that have been observed about 8 years ago in areas relatively far from Lisnave area (Diez et al 2005).…”

Section: Resultssupporting

confidence: 74%

“…From 2001 to 2003, TBT and DBT have been analyzed in sediment samples of eight Portuguese estuaries (Almeida et al 2007). More localized works have been carried out at Tagus estuary in 1990 and 2000 (De Bettencourt et al 1999;Nogueira et al 2003), Ria Formosa in 1992/1993(Coelho et al 2002, and Ria de Aveiro in 2005 (Sousa et al 2007). In addition, indirect evidence of BT contamination of Portuguese sediments, obtained through imposex levels, has been reported for: Sado and Mira estuaries (sampling between 1993 and1998;Pessoa et al 2001), several sites in Portuguese coastwise (sampling in 2000;Barroso and Moreira 2002), Oporto coast (sampling in 1998; Santos et al 2004), and Ria de Aveiro (sampling between 2002Rato et al 2006).…”

Section: Introductionmentioning

confidence: 97%

“…First, TBT studies on sediments in Portugal were remote in the beginning of the 1990s (Quevauviller et al 1989;Cortez et al 1993). In 1999/2000, TBT and its metabolites dibutyltin (DBT) and monobutyltin (MBT) were determined in water, sediment, and biological samples by Diez et al (2005) and, also in the same period, in snails tissues and sediments in the Atlantic Ocean off the Iberian Peninsula (GomezAriza et al 2006).…”

Section: Introductionmentioning

confidence: 99%

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Butyltin levels in several Portuguese coastal areas

Carvalho

Rodrigues

Basto

et al. 2008

Environ Monit Assess

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This work aimed to report present levels (2007-2008 sampling) of tri- (TBT), di- (DBT), and monobutyltin (MBT) in surface sediments from 11 Portuguese coastal sites and discuss the evolution of BTs contamination in the last two decades. All the samples revealed quantifiable values of TBT, DBT, and MBT with total butyltin concentrations between 1 and 565 ng/g (of Sn in dry sediment). Maximum level of TBT, 66 ng/g, was observed in Sado estuary, at Lisnave site, in the proximity of a big shipyard. MBT decreased site by site by the same order as DBT and TBT did, but its concentrations were much higher in many cases, denoting that TBT contamination was much higher in the past. A comparison with the available previous data confirmed a marked decrease of TBT contamination all over the last years, indicating that the main sources of TBT in Portuguese coastwise stopped effectively.

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Section: Resultssupporting

confidence: 74%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Butyltin levels in several Portuguese coastal areas

Carvalho

Rodrigues

Basto

et al. 2008

Environ Monit Assess

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“…Finally, the port of Sines (SCP) is a major industrial port and one of the main ports for the transhipment of containers in the Atlantic and Mediterranean routes. The BT concentrations reported in several surveys (1990)(1991)(1992)(1993) conducted in Portuguese coastal environments (Quevauviller and Donard, 1990;Cortez et al, 1993) were on the higher side, with levels ranging from 14 to 12,200 mg kg À1 total BTs in the sediments, with maximum levels recorded in the Sado estuary.…”

Section: Portuguese North Atlantic Coastmentioning

confidence: 93%

Butyltin occurrence and risk assessment in the sediments of the Iberian Peninsula

Dı́ez

Bayona

2009

Journal of Environmental Management

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“…The results of this in situ study suggest that both tested salt marsh plants contributed for TBT and DBT remediation in sediments from Ria Formosa, where the levels of butyltin contamination were much higher in the past (Cortez et al 1993), when TBT has been included in the paint of boats as antifouling agents. In Ria Formosa, plenty of fishing and shipping activities use to occur all over the year.…”

Section: Resultsmentioning

confidence: 83%

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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Survey of butyltin contamination in Portuguese coastal environments

Cited by 24 publications

References 10 publications

Butyltin levels in several Portuguese coastal areas

Butyltin levels in several Portuguese coastal areas

Butyltin occurrence and risk assessment in the sediments of the Iberian Peninsula

Ability of salt marsh plants for TBT remediation in sediments

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