Evaluation of Holding Time for Polycyclic Aromatic Hydrocarbon (PAH) Analysis in Saline Water Samples

Autor:	Leandro Franco Macena de Araujo, Rafael André Lourenço, Fabiana D.C. Gallotta
Rok vydání:	2010
Předmět:	Fluoranthene chemistry.chemical_classification Anthracene Polycyclic aromatic hydrocarbon Management Monitoring Policy and Law Saline water chemistry.chemical_compound chemistry Environmental chemistry Benzopyrene Pyrene Polycyclic Hydrocarbons Water quality Waste Management and Disposal
Zdroj:	Environmental Forensics. 11:309-314
ISSN:	1527-5930 1527-5922
DOI:	10.1080/15275922.2010.494959
Popis:	Holding time is the length of time a sample can be stored after collection and prior to analysis without significantly affecting the analytical results. According to the United States Environmental Protection Agency (US EPA), semivolatile organic compounds, such as polycyclic aromatic hydrocarbons (PAHs), must be extracted from water within 7 days for suitable analysis. However, often oceanographic cruises spend more than 7 days at sea, causing samples not to comply with the US EPA protocol. The aim of this work was to revaluate the holding time for the 16 PAHs classified as US EPA priority pollutants and benzo(e)pyrene in saline water samples when stored protected from light, at ⩽6°C using modern chromatographic techniques. The results showed that holding time for water samples is longer than 41 days for most PAHs. For some PAHs, the concentrations remained within the tolerable concentration until day 22 (dibenzo(a,h)anthracene and benzo(g,h,i)perylene) and until day 30 (benzo(b)fluoranthene).
Databáze:	OpenAIRE
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