Stir bar sorptive extraction-thermal desorption-gas chromatography–mass spectrometry: An effective tool for determining persistent organic pollutants and nonylphenol in coastal waters in compliance with existing Directives

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• 作者：Juan Sá ; nchez-Avila ; Jordi Quintana ; Francesc Ventura ; Romà ; Tauler ; Carlos M. Duarte ; Silvia Lacorte
• 关键词：SBSE-TD-GC– ; MS ; Environmental Quality Standards ; Persistent organic pollutants ; Catalonia coastal water ; European Union Directives ; US-EPA regulations
• 刊名：Marine Pollution Bulletin
• 出版年：2010
• 出版时间：January 2010
• 年：2010
• 卷：60
• 期：1
• 页码：103-112
• 全文大小：660 K

文摘

A multi-residual method based on stir bar sorptive extraction coupled with thermal desorption-gas chromatography–mass spectrometry (SBSE-TD-GC–MS) has been developed to measure 49 organic pollutants (organochlorine pesticides, polycyclic aromatic hydrocarbons, polychlorinated biphenyls, polybrominated diphenyl ethers and nonylphenol) in seawater. Using 100 ml of water, the method exhibited good linearity, with recoveries between 86 % and 118 % and relative standard deviation between 2 % and 24 % for almost all compounds. The method was applied to determine target contaminants in Catalonian seawater, including coastal areas, ports and desalination plant feed water. Overall individual compound levels oscillated between 0.16 and 597 ng l⁻¹; PAHs and nonylpenol were the compounds found at the highest concentrations. The method provided LODs between 0.011 and 2.5 ng l⁻¹, lower than the Environmental Quality Standards (EQS) fixed by Directive 2008/105/EC. In compliance with the directive, this method can be used as a tool to survey target compounds and is aimed at protecting coastal ecosystems from chemical pollution.