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Reducing blank values for trace analysis of ionic organotin compounds and their adsorption to different materials

Title data

Huang, Jen-How:
Reducing blank values for trace analysis of ionic organotin compounds and their adsorption to different materials.
In: International Journal of Environmental Analytical Chemistry. Vol. 84 (2004) Issue 4 . - pp. 255-265.
ISSN 1029-0397
DOI: https://doi.org/10.1080/03067310310001626768

Abstract in another language

Organotin compounds (OTC) are highly toxic pollutants strongly affecting many ecosystems. As the analytical techniques for OTC improved in the past, problems with blank values and adsorption to container walls revealed. In this study, OTC adsorption to different materials was studied and different methods such as derivatization, complexation, extraction, UV light treatment, nitric acid baths, glowing at high temperatures and rinsing with detergents and distilled water were tested to reduce OTCblank values from chemicals, solutions, and containers of different materials. Rinsing with detergents and distilled water was effective for decontaminating containers of different materials. Glowing at high temperatures was specifically suitable for glassware and chemicals withhigh melting points. UV light treatment was suitable only for solutions. However, OTC underwent disproportion and tin became methylated under high temperatures and UV light treatment. Methods combining sodium tetraethylborate and organic solvent extraction had the best decontamination effects among all methods, but were not economical. Sodiumborohydride provided another alternative, but was less effective. However, use of sodium tetraethylborate and sodium borohydride was restricted to aqueous solution and in certain pH ranges. No material was found withoutadsorption of all OTC in this study. Tributyltin and dibutyltin adsorbed strongly in the teflons, polyethylene, and silanised glass. Monomethyltin and monobutyltin had strong adsorption in most materials. Different materials should be used for different OTC in adsorption studies. Using extraction reagents to recover OTC from container walls is suggested to avoid underestimation of OTC concentrations in waters.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER19161
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 09 Oct 2015 05:56
Last Modified: 14 Mar 2016 13:04
URI: https://eref.uni-bayreuth.de/id/eprint/20231