Stepwise gradient elution of capillary electrochromatography in the analysis of environmental samples
文献类型：期刊论文
| 作者 | Zhang, LH; Zou, HF; Shi, W; Ni, JY; Zhang, YK |
| 刊名 | journal of capillary electrophoresis
 |
| 出版日期 | 1998 |
| 卷号 | 5期号:1-2页码:97-102 |
| 关键词 | capillary electrochromatography gradient elution stop-flow technique ketones aldehydes aromatic compounds |
| 英文摘要 | two modes of stepwise gradient elution of capillary electrochromatography were developed for the analysis of environmental samples on both a laboratory-made and a commercial ce instrument. using the laboratory-made apparatus, another mobile phase was dropped directly into the inlet vial with a pipet. by this means, nine 2,4-dinitrophenylhydrazine (dnph)-derivatized ketones and aldehydes were separated with high resolution. not only was analysis time shortened by more than one half, but the detection limit was greatly improved compared to that in isocratic elution. the latter was achieved using the p/ace 5510 system (beckman instruments, fullerton, ca, u.s.a.), which moved the mobile phase vials automatically. the stop-flow technique was utilized during transfer. it had no effect on solute retention. with this method, the concentration and type of organic modifier in the mobile phase could be changed. a mixture of 13 aromatic hydrocarbons was separated completely in 14 min by changing the mobile phase from 80% methanol to 80% acetonitrile and 90% acetonitrile in a sequential step mode. the rsd of the retention time of each component in six consecutive injections was below 0.374%. al i of these results demonstrate that stepwise grad lent elution of capillary electrochromatography may be useful in the analysis of complex environmental samples. |
| WOS标题词 | science & technology ; life sciences & biomedicine ; physical sciences |
| 类目[WOS] | biochemistry & molecular biology ; electrochemistry |
| 研究领域[WOS] | biochemistry & molecular biology ; electrochemistry |
| 关键词[WOS] | performance liquid-chromatography ; phase ; electrophoresis ; separation ; mixtures |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000080027700015 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/138106]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, Natl Chromatograph R & A Ctr, Dalian 116011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, LH,Zou, HF,Shi, W,et al. Stepwise gradient elution of capillary electrochromatography in the analysis of environmental samples[J]. journal of capillary electrophoresis,1998,5(1-2):97-102. |
| APA | Zhang, LH,Zou, HF,Shi, W,Ni, JY,&Zhang, YK.(1998).Stepwise gradient elution of capillary electrochromatography in the analysis of environmental samples.journal of capillary electrophoresis,5(1-2),97-102. |
| MLA | Zhang, LH,et al."Stepwise gradient elution of capillary electrochromatography in the analysis of environmental samples".journal of capillary electrophoresis 5.1-2(1998):97-102. |
入库方式： OAI收割
来源：大连化学物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。