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Titolo:
Final evaluation of US EPA method 3546: Microwave extraction, a microwave-assisted process (MAP (TM)) method for the extraction of contaminants underclosed-vessel conditions
Autore:
Pare, JRJ; Belanger, JMR; Lesnik, B; Turpin, R; Singhvi, R;
Indirizzi:
Environm Canada, Microwave Assisted Proc Div, Environm Technol Ctr, Ottawa, ON K1A 0H3, Canada Environm Canada Ottawa ON Canada K1A 0H3 Ctr, Ottawa, ON K1A 0H3, Canada US EPA, Off Solid Waste, Methods Team Sect, Washington, DC 20460 USA US EPA Washington DC USA 20460 ethods Team Sect, Washington, DC 20460 USA US EPA, Environm Response Team, Edison, NJ 08837 USA US EPA Edison NJ USA08837 , Environm Response Team, Edison, NJ 08837 USA
Titolo Testata:
SOIL & SEDIMENT CONTAMINATION
fascicolo: 4, volume: 10, anno: 2001,
pagine: 375 - 386
SICI:
1532-0383(2001)10:4<375:FEOUEM>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
METHYLPHENOL ISOMERS; SOIL; SEDIMENTS; CHROMATOGRAPHY; PESTICIDES; PHENOL; PCBS;
Keywords:
liquid phase microwave-assisted extraction; environmental matrix; organic contaminants; microwave-assisted processes; method validation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Pare, JRJ Environm Canada, Microwave Assisted Proc Div, Environm Technol Ctr, Ottawa, ON K1A 0H3, Canada Environm Canada Ottawa ON Canada K1A 0H3 wa, ON K1A 0H3, Canada
Citazione:
J.R.J. Pare et al., "Final evaluation of US EPA method 3546: Microwave extraction, a microwave-assisted process (MAP (TM)) method for the extraction of contaminants underclosed-vessel conditions", SOIL SEDIM, 10(4), 2001, pp. 375-386

Abstract

Microwave-assisted extraction, a MAP (TM) technology, has been the subjectof enhanced interest from the environmental sector in the last few years as a result of the need for methodologies that improve sample preparation without compromising the quality of the data while being environmentally sustainable. Liquid-phase microwave-assisted extraction offers such advantages:it is a very fast extraction technique, it consumes less solvent and energy, and it is cost effective. A preliminary validation study involving closed-vessel apparatus and contaminants such as PAHs, PCDDs/PCDFs, chlorinated pesticides, and PCBs was performed (Li et al., 1996). Excellent performanceand precision were achieved for these analytes (Li et al., 1996). In orderto fully evaluate the method fora wider range of analytes an interlaboratory study was performed. A round-robin study was performed with five laboratories carrying out the extraction portion. This study also involved thermally labile and potentially reactive RCRA target analytes such as phenols, phenoxyacid herbicides, and organophosphorus pesticides. Three split samples were used by each laboratory using methodologies stipulated in a single standard operational procedure (SOP). The extractions from the five laboratories were sent to a single laboratory who performed all the analyses in orderto minimize the variability of the results due to the determinative procedure. Clean up was performed using standard procedures and analyses were done according to the appropriate US EPA SW-846 methods. The broad range of applicability, the reduced sample preparation time, and the reduced amount ofsolvent used all contribute to achieving sustainable environmental protection goals. Furthermore, the reduced operational costs associated with the protocol - compared to conventional Soxhlet, for example-are significant andprove valuable in these times where the `greening" of the laboratory usually gives rise to higher operating costs. Further work involving open-vesselapparatus is under way.

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Documento generato il 04/04/20 alle ore 21:49:58