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Simultaneous determination of 15 phenylurea herbicides in rice and corn using HPLC with fluorescence detection combined with UV decomposition and post-column derivatization by Ren-Xiang Mou; Ming-Xue Chen; Jian-Liang Zhi is a Chemistry article available to read on EtoBox.
What is Simultaneous determination of 15 phenylurea herbicides in rice and corn using HPLC with fluorescence detection combined with UV decomposition and post-column derivatization about?
A method was developed for the simultaneous determination of 15 phenylurea herbicides (fenuron, tebuthiuron, metoxuron, monuron, chlortoluron, fluometuron, isoproturon, diuron, monolinuron, metobromuron, buturon, siduron, linuron, chlorbromuron, and neburon) in rice and corn samples by HPLC with fluorescence detection combined with UV decomposition and post-column derivatization. After extraction with acetonitrile and evaporation, the herbicides were redissolved in n-hexane and purified on a Florisil solid-phase extraction column. HPLC separation was carried out on a C18 column with water-acetonitrile gradient elution. UV decomposition was carried out under a 254-nm UV lamp. The method was evaluated in terms of the limits of detection and quantification. The linearity was satisfactory, with a correlation coefficient of >0.9980. Precision and recovery studies were evaluated at three concentration levels for each matrix. Good precision was obtained, with relative standard deviation in the range 1.5-9.6% for spiked rice samples and 0.9-9.9% for spiked corn samples. Recovery (n = 6) ranged between 75.3% and 104.3% for rice and between 75.0% and 105.1% for corn. The intra-day precision
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- Author
- Ren-Xiang Mou; Ming-Xue Chen; Jian-Liang Zhi
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 1873-376X)
- Published
- 2008
- Language
- EN
- Field
- Chemistry (Physical Sciences)
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