Journal
ANALYTICAL METHODS
Volume 3, Issue 12, Pages 2848-2853Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1ay05349c
Keywords
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Funding
- National Nature Science Foundation of China [20975031]
- Education Committee of Hubei Province [Q20102506]
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Wuhan University)
- Ministry of Education [ACBM2010004]
- Hubei Education Department of China [T201007]
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Dispersive liquid-liquid microextraction (DLLME) was developed for MEKC determination of 2,4-dihydroxy-benzophenone (HBP) and 2-hydroxy-4-methoxy-benzophenone (HMBP) in environmental water samples after topical skin application. Parameters affecting the extraction efficiency were investigated in detail. Under the optimum conditions, enrichment factors (EFs) of 208.9 for HBP and 194.6 fold for HMBP were obtained. The detection limits are 0.52 mmol L(-1) HBP and 0.29 mmol L(-1) HMBP, and the precisions for eight replicate measurements of 5.0 mmol L(-1) of HBP and HMBP are 4.9% and 1.5%, respectively. Environmental water samples after topical skin application were successfully analyzed by the proposed method with satisfactory results.
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