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- W750297029 abstract "This study was performed to examine analytical method of a quinolone compound, oxolinic acid in paddy soil by HPLC coupled with UV detector. Two types of soil texture in different regions were used for this experiment. Oxolinic acid was extracted by a 4 M-KOH : MeOH(1 : 3, v/v) mixtures and acidified followed by liquid-liquid partitioning in dichloromethane. Dichlormethane layer was dehydrated, evaporated and analyzed by HPLC (262 nm). Retention time was 10.2 min. The standard calibration curve of oxolinic acid showed linearity ($r^2>0.999^{**}$, y=378.99x+135.08) in the range of ng. The mean recoveries, evaluated from fortified soil samples at two concentration levels of 0.2 mg/kg and 1.0 mg/kg, were (C.V. 4.97%) and (C.V. 0.24%) for soil 1 and (C.V. 1.25%) and (C.V. 0.33%) for soil 2, respectively The detection limits of two types of soils were same as 0.05 ppm. Overall, the present analytical method of oxolinic acid by HPLC coupled with UV detector seems to be used reasonably." @default.
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- W750297029 date "2005-01-01" @default.
- W750297029 modified "2023-09-24" @default.
- W750297029 title "Determination of Oxolinic Acid in Paddy Soil by HPLC Coupled with UV Detector" @default.
- W750297029 hasPublicationYear "2005" @default.
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