Perez-Lemus, N. published the artcileAnalysis of 60 pharmaceuticals and personal care products in sewage sludge by ultra-high performance liquid chromatography and tandem mass spectroscopy, Related Products of chlorides-buliding-blocks, the publication is Microchemical Journal (2022), 107148, database is CAplus.
This paper presents a comparison of three different anal. proposals for the determination of 60 pharmaceuticals and personal care products (PPCPs) in solid urban sewage sludge. Two fast sample pretreatments, i.e., online solid-phase-extraction (online SPE) and direct injection (DI), were tested against the conventional offline solid phase extraction (offline SPE). In all cases, subsequently, extracts underwent ultra-high-performance-liquid chromatog. coupled to tandem-mass-spectrometry (UHPLC-MS/MS), simultaneously operating in both pos. and neg. electrospray ionization (ESI) mode. In addition, as solid matrixes, clean-up steps were necessarily preceded by ultra-sound-assisted extraction (UAE) in all cases. Matrix-matched quantification was combined with internal standard providing high reliability to all three approaches. Best performance was observed for the fully automatized and non-pretreated DI method, showing limits of detection below 30 ng g-1 for many of the target compounds, and recoveries between 80 and 120%. Finally, the best working method was validated and applied to the anal. of PPCPs in different dewatered digested sludge samples from the wastewater treatment plant (WWTP) in Valladolid (Spain). Acetaminophen was found at concentrations above 1,000 ng g-1.
Microchemical Journal published new progress about 637-07-0. 637-07-0 belongs to chlorides-buliding-blocks, auxiliary class Inhibitor,Cell Cycle,PPAR, name is Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate, and the molecular formula is C12H15ClO3, Related Products of chlorides-buliding-blocks.
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