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Herbicide

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https://www.readbyqxmd.com/read/20195586/novel-derivatisation-technique-for-the-determination-of-chlorophenoxy-acid-type-herbicides-by-gas-chromatography-mass-spectrometry
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Erik Maloschik, Mária Mörtl, András Székács
The analytical detection of chlorophenoxycarboxylic-acid-type herbicides (2,4-D, dichloprop, MCPA, etc.) in environmental samples is often a problem in instrumental analysis, as these compounds containing free carboxylic groups require chemical derivatisation prior to gas chromatographic (GC) methods. Nine chlorophenoxy-acid-type herbicide active ingredients have been derivatised successfully with trimethylsilyl N,N-dimethyl carbamate and t-butyldimethylsilyl N,N-dimethyl carbamate by forming their trimethylsilyl (TMS) and t-butyldimethylsilyl (TBDMS) esters, respectively...
May 2010: Analytical and Bioanalytical Chemistry
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