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Paclobutrazol estimation by gas chromatography - A new method for its residue analysis in soil

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Bhattacherjee, A.K.
Singh, V.K. (Central Institute for Subtropical Horticulture, Lucknow (India))

A simple gas chromatographic method for the estimation of paclobutrazol residues in soil was standarized using electron capture detector and megabore column. No derivatization was required for GLC-ECD determination of paclobutrazol. Soils were simply extracted in methanol, filtered twice, methanol was evaporated completely and residues were redissolved in 1ml methanol before analysis. An average recovery of 86.82 per cent of paclobutrazol was obtained from soils fortified with 0.1, 1.0 and 2.0 ppm solutions with a minimum detection limit of 0.0001 ppm.

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