Vertical Distribution of Butyltin Residues in Sediments of British Columbia Harbours

Autor:	J. A. J. Thompson, Carol Stewart
Rok vydání:	1997
Předmět:	Sediment General Medicine Colombie britannique chemistry.chemical_compound Oceanography chemistry Harbour Tributyltin Environmental Chemistry Environmental science Seawater Water pollution Waste Management and Disposal computer Water Science and Technology computer.programming_language
Zdroj:	Environmental Technology. 18:1195-1202
ISSN:	1479-487X 0959-3330
DOI:	10.1080/09593331808616640
Popis:	Vertical distributions of tributyltin (TBT) and its degradation products di- and monobutyltin have been measured in five sediment cores collected in harbours and marinas of southern British Columbia, Canada. Despite restrictions on the use of organotin-based marine antifouling paints imposed in Canada in 1989, concentrations of butyltin compounds in coastal marine sediments remain high. The highest concentration of TBT, 520 ng g−1 TBT-Sn, was recorded in a core collected from a small marina near Sidney, Vancouver Island. Similar levels of TBT were also recorded in a core collected in inner Vancouver Harbour, indicating that commercial shipping continues to be a significant source of butyltin contaminants to British Columbia's marine environment. Vertical profiles of butyltins differed according to location. The marina core showed the maximum in TBT concentration at 8 cm depth, indicating clearly that the retail ban on organotin-based paints to craft less than 25 m in length has successfully reduced the fl...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::36050dbc7b216db2ea3900d6a829d383 https://doi.org/10.1080/09593331808616640 Zobrazit plný text záznamu