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In this paper,a simple method based on ion chromatography(IC) with conductivity detection was developed for the determination of iminodiacetic acid(IDA) in the herbicide of glyphosate.Under optimized chromatographic conditions,good linear relationship,sensitivity and reproducibility were obtained.The detection limit(LOD) for IDA obtained by injecting 25 μL of sample was 31.8 μg/L(S/N = 3).Relative standard deviation(RSD) of repeated analysis for the peak areas was less than 1.53%(n = 6).A spiking study was performed with satisfactory recoveries between 92.8%and 103.6%.It was confirmed that this method could be applied in glyphosate products.
In this paper, a simple method based on ion chromatography (IC) with conductivity detection was developed for the determination of iminodiacetic acid (IDA) in the herbicide of glyphosate. Under optimized chromatographic conditions, good linear relationship, sensitivity and reproducibility were were. The detection limit (LOD) for IDA was obtained by injecting 25 μL of sample was 31.8 μg / L (S / N = 3). Relative standard deviation (RSD) of the repeated analysis for the peak areas was less than 1.53% (n = 6) .A spiking study was performed with satisfactory recoveries between 92.8% and 103.6% .It was confirmed that this method could be applied in glyphosate products.