A novel amperometric sensor and chromatographic detector for determination of parathion
Li, C; Wang, C; Ma, Y; Bao, W; Hu, S
HERO ID
749995
Reference Type
Journal Article
Year
2005
Language
English
PMID
| HERO ID | 749995 |
|---|---|
| In Press | No |
| Year | 2005 |
| Title | A novel amperometric sensor and chromatographic detector for determination of parathion |
| Authors | Li, C; Wang, C; Ma, Y; Bao, W; Hu, S |
| Journal | Analytical and Bioanalytical Chemistry |
| Volume | 381 |
| Issue | 5 |
| Page Numbers | 1049-1055 |
| Abstract | A novel amperometric sensor and chromatographic detector for determination of parathion has been fabricated from a multi-wall carbon nano-tube (MWCNT)/Nafion film-modified glassy-carbon electrode (GCE). The electrochemical response to parathion at the MWCNT/Nafion film electrode was investigated by cyclic voltammetry and linear sweep voltammetry. The redox current of parathion at the MWCNT/Nafion film electrode was significantly higher than that at the bare GCE, the MWCNT-modified GCE, and the Nafion-modified GCE. The results indicated that the MWCNT/Nafion film had an efficient electrocatalytic effect on the electrochemical response to parathion. The peak current was proportional to the concentration of parathion in the range 5.0x10(-9)-2.0x10(-5) mol L(-1). The detection limit was 1.0x10(-9) mol L(-1) (after 120 s accumulation). In high-performance liquid chromatography with electrochemical detection (HPLC-ED) a stable and sensitive current response was obtained for parathion at the MWCNT/Nafion film electrode. The linear range for parathion was over four orders of magnitude and the detection limit was 6.0x10(-9) mol L(-1). Application of the method for determination of parathion in rice was satisfactory. |
| Doi | 10.1007/s00216-004-2978-2 |
| Pmid | 15742183 |
| Wosid | WOS:000227560300013 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Is Qa | No |