Determination of Pentachlorophenol and Cymiazole in Water and Honey by C-18 Solid Phase Extraction and Quantitative HPTLC

Pentachlorophenol and cymiazole were extracted from water and honey using C-18 solid phase extraction, column eluates were chromatographed on a high performance preadsorbent silica gel plate containing a fluorescent phosphor, and the pesticides were quantified by densitometric scanning of fluorescence quenching. Recoveries from water at concentrations of 0.25–5 ppm ranged from 97.7 to 100% for PCP and 89.5–94.9 for cymiazole. Recoveries from honey at 10 and 50 ppm ranged from 94.0–96.1% for PCP and 91.9–93.7 for cymiazole.