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Magnetic solid-phase extraction followed by high performance liquid chromatography for determination of hexanal and heptanal in human urine

✍ Scribed by Song, Dandan; Gu, Yanqin; Liang, Lu; Ai, Zhihui; Zhang, Lizhi; Xu, Hui

Book ID
121426426
Publisher
The Royal Society of Chemistry
Year
2011
Tongue
English
Weight
300 KB
Volume
3
Category
Article
ISSN
1759-9660

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## Abstract A new, sensitive method for the determination of oncopterin, biopterin, and neopterin in human urine has been developed using SPE with 6,7‐dimethylpterin as internal standard and gradient HPLC with fluorescence detection. SPE was tested for the pre‐treatment of urine samples on differen