Application of UV-visible Spectral Library in Identifying Hidden Ingredients in Herbicides
This study outlines the development of a standard UV-visible spectral library comprising 113 conventional herbicides aimed at identifying hidden ingredients in herbicides.Employing a mobile phase of acetonitrile and water with ortho-phosphoric acid,qualitative analysis of herbicide hidden ingredients was performed by gradient elution.Hidden ingredients were identified on two pesticide herbicides using the spectral library,revealing 3 hidden ingredients:propanil,metamifop and methylchloro phenoxyacetic acid.This method enables quick and accurate detection of hidden ingredients added in herbicides,providing strong characteristic and specificity and overcoming false positive results inherent in retention time-based qualitative analysis.The simplicity of operation,high detection efficiency,short analysis time,and cost-effectiveness render this method suitable for pesticide analysts.
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