US EPA

1835513 

Journal Article 

[Simultaneous determination of chlormequat chloride and mepiquat chloride in plants by mobile phase ion chromatography] 

Zhou, X; Xu, J; Chen, Z; Zhu, Y 

2011 

1 

Sepu / Chinese Journal of Chromatography
ISSN: 1000-8713
EISSN: 1872-2059 

29 

3 

244-248 

Chinese 

21657055 

10.3724/sp.j.1123.2011.00244 

http://pub.chinasciencejournal.com/article/getArticleRedirect.action?doiCode=10.3724/SP.J.1123.2011.00244
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Ion-pair reagent was used as mobile phase for the simultaneous separation of chlormequat chloride and mepiquat chloride in plants. The rapid separation was performed on a Dionex IonPac NG1 guard column and a Dionex IonPac NS1 analytical column using 1.0 mL/min of the eluent mixture of 1.00 mmol/L nonafluoropentanoic acid (as ion-pair reagent) and 7% acetonitrile, and the detection was achieved by a suppressed conductivity detector. The method provided good resolution of the analyte peaks without any interference. The detection limits of chlormequat chloride and mepiquat chloride were 0.154 6 mg/L and 0.171 4 mg/L, respectively. The linear calibration curves were obtained in the range of 1 - 100 mg/L. The mean recoveries in the ranges of 96.06% - 104.6% for chlormequat chloride and 98.53% - 103.7% for mepiquat chloride were obtained in real samples. The method requires only simple sample preparation and the technique is suitable for routine quality control analysis.