Assay of Formulations Containing 2,4-D and/or Picloram by Direct Injection High Pressure Liquid Chromatography
Keyword(s):
Abstract A rapid and precise fully automated, direct injection high pressure liquid chromatographic method is described for assaying liquid formulations of 2,4-dichlorophenoxyacetic acid (2,4-D) and/or picloram (4-amino-3,5,6-trichloropicolinic acid). The method is specific for the 2,4-D and picloram isomers. No sample preparation is needed, triplicate assays can be performed in 1 hr, and precision is about 1% relative at the 95% confidence level. Compounds are separated on a 9 mm id reverse phase microparticulate column with an eluant of ace* tonitrile-water (1+4) , buffered at pH 2.95. No bias was observed between this method and the official final action HPLC method for picloram and 2,4-D in picloram-2,4-D mixtures, 6.B09-6.B12.
1981 ◽
Vol 5
(1)
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pp. 24-28
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1981 ◽
Vol 13
(1)
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pp. 95-100
1978 ◽
Vol 61
(5)
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pp. 1163-1165
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1975 ◽
Vol 58
(4)
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pp. 754-756
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