A method based on liquid-liquid microextraction (LLME) and gas chromatography/mass selective detection (GC/MS-SIM) was developed for simultaneous determination of 36 pesticides and PAHs in water sample like drinking water and eco-environmental water. The optimisation of the method was performed and the variables studied were the organic solvent, extraction time, sample amount, rotor speed, salt and the humic acid effect. The linearity was observed in the range 0.01~10 mg/mL and all correlation coefficients were 0.7666~0.9999. The method was checked by fortification experiments of water sample spiked with three different level pesticides and PAHs (5, 10, 50 ng/g), a good recoveries' rates and LOD and LOQ was obtained. Five types of water sample such as pure water, tap water, the lake water, the river water and the water from drinking water source of Shanghai were detected, the results indicating that LLME-GC/MS-SIM method could be an option for analyzing pesticides and PAHs in the water sample.

Liquid-liquid microextraction multiresidue method for gas chromatography/mass selective detection of pesticides and PAHs in water

248th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.