Journal
JOURNAL OF LIQUID CHROMATOGRAPHY & RELATED TECHNOLOGIES
Volume 28, Issue 18, Pages 2909-2919Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/10826070500271931
Keywords
pesticides; water; solid-phase microextraction; liquid chromatography
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This study develops a method for solid-phase microextraction (SPME) coupled with high performance liquid chromatography with diode array detector (HPLC-DAD) of two pesticides widely used in sugar cane culture, tebuthiuron and diuron. The SPME-HPLC coupling was made by a home made interface. Parameters affecting the sorption and desorption of analyte, including sampling time, fiber type, stirring rate, pH, ionic strength, temperature, mobile phase composition, and desorption time were evaluated. The best conditions were obtained by a polyacrilate fiber, higher temperatures, sampling time of 50 minutes, and desorption time of 15 minutes.
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