Liquid Chromatography-Tandem Mass Spectrometry Determination of Nonionic Organophosphorus Flame Retardants and Plasticizers in Wastewater Samples

摘要

A comprehensive method for the determination of ionic organophosphorus flame retardants/plasticizers inwastewater samples by solid-phase extraction (SPE) with liquid chromatography-electrospray ionization-tandemmass spectrometry (LC--ESI--MS/MS) is present6d. It allows the determination of 11 organophosphorus compounds, trialkyl and trichloralkyl phosphates, triaryl phosphate, and biphosphthes together with triphenylphosphine oxide (TPPO). Limits of quanuncation ther SPE of 100 mL of water are betwsen 3 and 80 nf/L, which are adequate for most aqueous samples. The sensitivity of the LC-ESI-MS approach allows direct injection of aqueous sample without preceding extraction for concentrstions in the low mug/L range. The method was finally applied to municipal wastewater samples, showing the occurrence of six phosphoric acid triesters and TPPO in both raw and treated municipal wastewaters.