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Cited by 169 publications
(118 citation statements)
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“…Further prolonging of derivatization and extraction time, however, resulted in decrease of peak area due to the dissolution of [C 8 MIM][PF 6 ] in sample solution. This result is in agreement with that of previous studies 6 ] for 30 min. [13,14].…”
Section: Derivatization and Extraction Timesupporting
confidence: 94%
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“…Further prolonging of derivatization and extraction time, however, resulted in decrease of peak area due to the dissolution of [C 8 MIM][PF 6 ] in sample solution. This result is in agreement with that of previous studies 6 ] for 30 min. [13,14].…”
Section: Derivatization and Extraction Timesupporting
confidence: 94%
“…Analytical-grade DNPH was obtained from Beijing Chemicals Corporation (Beijing, China) and was dissolved in acetonitrile to prepare a 30 mg l −1 solution. Reagents for the synthesis of [C 8 MIM][PF 6 ], including 1-methylimidazole (99%), 1-chloroctane (99%) and hexafluorophosphoric acid (60 wt.% solution in water) were obtained from Acros Organics. HPLC-grade acetonitrile was purchased from Scharlace Chemie SA (Barcelona, Spain).…”
Section: Reagents and Solutionsmentioning
confidence: 99%
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