The speciation of some tributyltin compounds using M�ssbauer spectroscopy in different estuarine sediments

May, Leopold; Berhane, Leah; Berhane, Menna; Counsil, Charles; Keane, Matthew; Reed, Benjamin B.; Eng, George

doi:10.1007/bf00482942

Cited by 7 publications

(5 citation statements)

References 8 publications

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“…Mossbauer spectroscopy, 119Sn, has been employed in the "in vitro" speciation of tributyltin(IV) and triphenyltin(IV) derivatives spiked to estuarine sediments (Eng et al 1986;Lucero et al 1992;May et al 1994;Whalen et al 1993) mainly in view of the large use of triorganotins in antifouling coating of ship hulls (Kjaer 1992). The field has been reviewed, in relation also with environmental and biological aspects .…”

Section: Analysis and Speciation Of Organotins In The Environmentmentioning

confidence: 99%

“…The procedure employed for the obtainment of absorber samples to be submitted to 119Sn Mossbauer investigation was as follows (Lucero et al 1992;Whalen et al 1993;May et al 1994):…”

Section: Analysis and Speciation Of Organotins In The Environmentmentioning

confidence: 99%

“…ii. nBu3SnOH and (nBu3SnhO show analogous interactions with oxic sediments, while, when spiked to anoxic sediments, the oxide forms different compounds in samples taken from given sites (Eng et al 1986;May et al 1994). iii.…”

Section: Analysis and Speciation Of Organotins In The Environmentmentioning

confidence: 99%

“…nBu3SnCI and nBu3Sn(02CCH3) interact with anoxic sediments in different ways in relation to the origin of the sediment (May et al 1994). (nBu3SnhS and (nBu3SnhC03 are converted to other derivatives when spiked to both type of sediments (May et al 1994). nBu3SnOH and (nBu3SnhO show analogous interactions with oxic sediments, while, when spiked to anoxic sediments, the oxide forms different compounds in samples taken from given sites (Eng et al 1986;May et al 1994).…”

Section: Analysis and Speciation Of Organotins In The Environmentmentioning

confidence: 99%

“…Eng et al 1986;May et al 1994;Lucero et al 1992;Whalen et al 1993. 0= isomer shift with respect to BaSn0 3 ;!J.E = nuclear quadrupole splitting; T = 80 K. Data for solid state samples of the organotin(lV) salts employed in the interaction with sediments.…”

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confidence: 99%

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Chemical Processes in Marine Environments

Gianguzza¹,

Pelizzetti²,

Sammartano³

2000

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Section: Analysis and Speciation Of Organotins In The Environmentmentioning

confidence: 99%

“…The procedure employed for the obtainment of absorber samples to be submitted to 119Sn Mossbauer investigation was as follows (Lucero et al 1992;Whalen et al 1993;May et al 1994):…”

Section: Analysis and Speciation Of Organotins In The Environmentmentioning

confidence: 99%

Section: Analysis and Speciation Of Organotins In The Environmentmentioning

confidence: 99%

Section: Analysis and Speciation Of Organotins In The Environmentmentioning

confidence: 99%

mentioning

confidence: 99%

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Chemical Processes in Marine Environments

Gianguzza¹,

Pelizzetti²,

Sammartano³

2000

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Speciation of some triorganotin compounds in sediments from the Anacostia and Potomac Rivers, Washington, DC, using Mössbauer spectroscopy

Eng¹,

Desta²,

Biba³

et al. 2001

Applied Organom Chemis

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Triorganotin compounds, namely the tributyltin (TBT) and triphenyltin (TPT) moieties, have been used as the active components in antifoulant marine paints. Mo È ssbauer spectroscopy was used in this work to identify the products of speciation of these triorganotin compounds in various types of sediment from rivers around the Washington, DC, USA, area. Aerobic and anaerobic sediments from several sites in the Anacostia and Potomac Rivers were spiked with tributyl-and triphenyl-tin chloride, bis-(tri-n-butyltin) oxide and triphenyltin hydroxide. Mo È ssbauer spectra were recorded for the resultant interactions of the species produced with the various sediments. The Mo È ssbauer spectra of both types of sediment, aerobic and anaerobic, spiked with tributyltin chloride and bis-(tri-nbutyltin) oxide were the same, suggesting that these compounds were converted to the same species, mostly likely the hydrated tributyltin cation, TBT . The spectra of all triphenyltin chloride and triphenyltin hydroxide spiked sediment samples were the same, indicating again that these compounds were converted to the same species, in this case the hydrated triphenyltin cation, TPT . Thus the species that interacts with the various sediments are the respective hydrated cations. The results also support the previous conclusion obtained with Chesapeake Bay sediments, that the product of triorganotin speciation depends on the nature of sediment. Copyright # 2001 John Wiley & Sons, Ltd.KEYWORDS: triorganotin; antifoulant; speciation; sediments; Mo È ssbauerThe use of tributyltin (TBT) and triphenyltin (TPT) compounds in antifouling marine paints has generated great concerns and interest in their fate in the environment because they are known to have toxic effects on non-targeted marine organisms. 1±4 The use of triorganotin compounds in the USA has been restricted by the Organotin Act, 5 which prohibits the use of organotin-based paints on vessels smaller than 25 m. However, the hulls of older pleasure crafts may still contain these toxicants, which may leach into waterways and become potential environmental problems. Hence, it is important to study the fate and chemical speciation of these compounds in sediments when they enter the water system. In general, speciation of organotin compounds has been determined by extraction and/or derivatization procedures.6±8 However, tin Mo È ssbauer spectroscopy offers an advantage in that it permits the direct observation of the triorganotin species in the sediments. Mo È ssbauer spectroscopy yields information about the structure, bonding and oxidation states in organotin compounds by providing a probe of the tin atom. The two parameters obtained from the Mo È ssbauer spectrum are the isomer shift d and the quadrupole splitting D. The isomer shift is related to the s-electron density at the tin nucleus, which can provide information as to its oxidation states and the bonding of the tin atom. The quadrupole splitting reflects the electronic environment around the tin nucleus, and its magnitude gives info...

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