Title: Determination of the isocarbphos by flow-injection chemiluminescence
Abstract: A flow-injection chemiluminescence( FIA-CL) method for the determination of Isocarphos was developed based on the observation that isocarphos could enhance the CL of luminol-H2O2 system in an alkaline solution. The result showed that the optiomal reaction condition was: sub-pump flow speed,70 r·min-1; pH 10. 4 NaH2PO4-NaOH; hydrogen peroxide 9. 0 × 10-3mol·L-1; luminol 7.5 ×10-6mol·L-1. The linear range for Isocarphos was 2. 5 ×10-7~1. 0 ×10-5g·mL-1with a detection limit of 1. 0 ×10-8g·mL-1. This method was applied to the determination of Isocarphosin rice sample with recovery of94. 5 ~ 98. 0% and the RSD of 1. 9% ~ 3. 2%.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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