Analysis of diquat and paraquat by high performance liquid chromatography
文献类型：期刊论文
| 作者 | Li Hong-Mei1; Sun Shou-Wei2; Shi Xie-Fei1 |
| 刊名 | CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
 |
| 出版日期 | 2007-10-01 |
| 卷号 | 35期号:10页码:1499-1502 |
| 关键词 | Reversed Phase High Performance Liquid Chromatography Chaotropic Effect Cationic Compounds Diquat Paraquat |
| ISSN号 | 0253-3820 |
| 英文摘要 | Diquat and Paraquat are ionic compounds, and difficult to retain and resolve on silica-base RP-HPLC columns. Consequently, the determination of diquat and paraquat is usually performed by ion-pairing reagents. In this study, a new RP-HPLC approach was established depending on the chaotropic effect, which is interpreted by the influence of some special inorganic additives to disrupt the analyte's solvation-desolvation equilibrium in the mobile phase. The effects of three chantropic agents ( KCIO4, KBF4, KPF6) concentrations on the separation were studied. KPF6 is the most effective one and was used in the experiment practically. The separation conditions were optimized. In the system, 100% water ( pH = 3) was used as mobile phase containing 20 mmol/L KPF6; a reversed phase column which can be used throughout the entire range of aqueous-organic solvent mobile phase was preferable; the detection wavelength was selected 307 nm for diquat and 257 nm for paraquat. By comparing with traditional ion-pairing method, the retention value, separation efficiency, peak symmetry and ruggedness were all improved greatly in this approach. |
| 语种 | 英语 |
| WOS记录号 | WOS:000252547500023 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/61653]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li Hong-Mei |
| 作者单位 | 1.Natl Inst Metrol, Inst Chem, Beijing 100013, Peoples R China 2.Natl Inst Measurement Technol, Chengdu 610005, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Hong-Mei,Sun Shou-Wei,Shi Xie-Fei. Analysis of diquat and paraquat by high performance liquid chromatography[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2007,35(10):1499-1502. |
| APA | Li Hong-Mei,Sun Shou-Wei,&Shi Xie-Fei.(2007).Analysis of diquat and paraquat by high performance liquid chromatography.CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,35(10),1499-1502. |
| MLA | Li Hong-Mei,et al."Analysis of diquat and paraquat by high performance liquid chromatography".CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 35.10(2007):1499-1502. |
入库方式： OAI收割
来源：化学研究所
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