Technical Bulletin describes use of HPLC coupled with evaporative light scattering detection for the analysis of phenylurea herbicides in water
Polymer Laboratories has published a new technical bulletin entitled 'Analysis of herbicides in water using PL-ELS 2100 evaporative light scattering detection'.
Phenylurea pesticides are used widely in agriculture as selective herbicides.
Common phenylurea herbicides' degradation products have a relatively long lifetime, and the mobility of these herbicides increases the chance of migration to ground water via leaching and surface run-off.
The need to develop analytical methods for the analysis of phenylurea herbicides in surface and ground water is vital to understanding the herbicide degradation pathways in the environment.
The application of gas chromatography to the analysis of phenylurea pesticides is difficult as they are thermally unstable and degrade rapidly to isocyanates and amines.
An alternative approach for thermally sensitive compounds is to use HPLC, coupled with evaporative light scattering detection.
Evaporative light scattering detectors respond to all compounds which are less volatile than the mobile phase.
The PL-ELS 2100 evaporative light scattering detector is designed to evaporate highly aqueous mobile phases at ambient temperature.
By operating the PL-ELS 2100 at ambient temperature the loss of semi-volatile components is minimised, the sample integrity is preserved, and maximum sensitivity is achieved, says Polymer Laboratories.
For full details of the effectiveness and the use and operation of the PL-ELS 2100 for herbicides analysis in water, request Polymer Laboratories' new technical bulletin, TB 1064.
