Gas chromatographic evaluation of some N-derivatives of intact carbaryl
- 21 Downloads
Gas chromatographic (GLC) detection of arylN-methylcarbamates as theN-acetyI-Clx orN-nitroso derivatives of the intact molecule was explored using carbaryl as the model compound. These derivatives were designed for use with the microcoulometric detector for chlorine and the solution conductivity detector for nitrogen but response to the electron capture detector was also studied. GLC characteristics of the derivatives were evaluated in terms of thermal stability and detector response.
N-Trichloracetyl andN-nitroso carbaryl underwent extensive decomposition in the GLC system. Although theN-monochloroacetyl derivatives were also subject to thermal decomposition, they gave sufficient linearity and sensitivity with the microcoulometric detector for analysis at the residue level.N-Acetyl carbaryl was thermally stable and the response of electrolytic conductivity and the electron capture detectors were adequate for residue analysis.
KeywordsNitrogen Thermal Stability Chlorine Thermal Decomposition Model Compound
Unable to display preview. Download preview PDF.
- Coulson, D. M.: Electrolytic conductivity detector for gas chromatography. J. Gas Chromatog.3, 134 (1965).Google Scholar
- Gaston, L. K.: Gas chromatography using an electron absorption detector. Residue Reviews5, 21 (1964).Google Scholar
- Magallona, E. D., F. A. Gunther, and Y. Iwata: Synthesis and spectroscopic characterization of acetyl-Clx=0,1,2 or 3) and nitroso derivatives of carbaryl and three possible metabolites. Arch. Environ. Contamin. Toxicol.5, 177 (1976).Google Scholar
- Patchett, G. G.: Evaluation of the electrolytic conductivity detector for residue analysis of nitrogen-containing pesticides. J. Chromatog. Sci.8, 155 (1970).Google Scholar