Kasprzyk-Hordern, Barbara and Dinsdale, Richard M. and Guwy, Alan J. (2008) The effect of signal suppression and mobile phase composition on the simultaneous analysis of multiple classes of acidic/neutral pharmaceuticals and personal care products in surface water by solid-phase extraction and ultra performance liquid chromatography-negative electrospray tandem mass spectrometry. TALANTA, 74 (5). pp. 1299-1312. ISSN 0039-9140
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Anew multi-residue method for the determination of 25 acidic/neutral pharmaceuticals (antibiotics, anti-inflammatory/analgesics, lipid regulating agents, diuretics, triazides, H2-receptor antagonists, cardiac glicozides and angiotensin II antagonists) and personal care products (sunscreen agents and preservatives) in surface water with the usage of a new technique: ultra performance liquid chromatography-negative electrospray tandem mass spectrometry (lJPLC-MS/MS) was developed and validated. The novel UPLC system with 1.7 mu m particle-packed column allowed for good resolution of analytes with the application of low mobile phase flow rates (0.05 mL min(-1)) and short retention times (from 4.7 min to 13.3 min) delivering a fast and cost-effective multi-residue method. SPE with the usage of Oasis MCX strong cation-exchange mixed-mode polymeric sorbent was chosen for sample clean-up and concentration. The influence of mobile-phase composition, matrix assisted ion suppression and SPE recovery on the sensitivity of the method was identified and quantified. The instrumental limits of quantification varied from 0.2 mu g L-1 to 30 mu g L-1. The method limits of quantification were at low nanogram per litre levels and ranged from 0.3 ng L-1 to 30 ng L-1. The instrumental and method intra-day and inter-day repeatabilities were on average less than 5%. The method was successfully applied for the determination of PPCPs in River Taff. Thirteen compounds were determined in river water at levels ranging from a single to a few hundred nanograms per litre. Among them were ten pharmaceuticals (aspirin, salicylic acid, ketoprofen, naproxen, diclofenac, ibuprofen, mefenamic acid, furosemide, sulfasalazine and valsartan) and three personal care products (methyl- and ethylparaben and 4-benzophenone). (c) 2007 Elsevier B.V. All rights reserved.
|Uncontrolled Keywords:||pharmaceuticals and personal care products; ultra performance liquid chromatograpby-tandem mass spectrometry; solid-phase extraction; multi-residue method; ion suppression; mobile-phase additives|
|Subjects:||NanoSafety > Environment, health and safety aspects of nanotechnology|
Analytical Science > Beam methods
|Deposited By:||M T V|
|Deposited On:||15 Dec 2008 12:01|
|Last Modified:||15 Dec 2008 12:01|
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