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Comparison of solid-phase sorbents for the determination of fluoroquinolone antibiotics in wastewater

✍ Scribed by Saioa Zorita; Lennart Larsson; Lennart Mathiasson

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
214 KB
Volume
31
Category
Article
ISSN
1615-9306

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✦ Synopsis

Abstract

Three different SPE sorbents (weak cation exchange, mixed cation exchange, and hydrophobic–lipophilic balance polymers) were compared in terms of recovery, precision, and the effect of matrix components on analyte response for the determination of fluoroquinolones antibiotics. The influence of ethylenediaminetetraacetic acid disodium salt (Na~2~‐EDTA) was as well tested. Two of the sorbents, hydrophilic–lipophilic balance (HLB) and weak cation exchange (WCX), turned out to be suitable for ultratrace analysis. HLB sorbent showed higher capacity for analyte trapping and better precision while weak cation exchange sorbent had a superior performance in terms of selectivity. In complex samples, the higher capacity of HLB was outweighed by the higher selectivity of WCX when considering the LODs of the methods.

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