|
| 论文编号: |
|
| 论文题目: |
Optimization of derivatization procedure and gas chromatography-mass spectrometry method for determination of bensulfuron-methyl herbicide residues in water |
| 英文论文题目: |
Optimization of derivatization procedure and gas chromatography-mass spectrometry method for determination of bensulfuron-methyl herbicide residues in water |
| 第一作者: |
张彦 |
| 英文第一作者: |
Zhang, Y. |
| 联系作者: |
文波龙 |
| 英文联系作者: |
Wen, B. L. |
| 外单位作者单位: |
|
| 英文外单位作者单位: |
|
| 发表年度: |
2015 |
| 卷: |
995 |
| 期: |
|
| 页码: |
31-37 |
| 摘要: |
A simple and efficient technique based on liquid phase extraction with CH2Cl2 solvent followed by derivatization with (C2H5)(2)O center dot BF3 solution and confirmation analysis with GC-MS analytical method was developed for detecting the bensulfuron-methyl (BSM) residues in water. Box-Behnken response surface methodology was employed for optimization of the derivatization efficiency. According to the optimization model, the derivatization time of 45 min, derivatization temperature at 55 degrees C and 0.2 mL (C2H5)(2)O center dot BF3 solvent were selected as the optimal derivatization condition for obtaining the maximum desirability of response. Method validation was performed at 6 working standard levels (0.05, 0.1, 0.2, 0.5, 1.0, 5.0 mu g/mL) and the linearity of the calibration curve was linear well over the 6 fortification levels with the squared correlation coefficient of determination r(2) = 0.998 and the LOD was found to be 0.1 mu g/L for BSM herbicide. The mean value of BSM was detected from 0.0414 to 4.7542 mu g/mL at levels from 0.05 to 5 mu g/mL with the recoveries remained at the acceptable level (42.8-95.0%) with the RSD values from 3.5% to 6.2%, which is more accptable and desirable than the results obtained by LC methods. Moreover, the method allowed the determination of BSM residue in real paddy field water samples at concentrations between 0.0902 and 3.4605 mu g/L. Average recovery rates of the BSM spiked at levels 0.1, 0.2, 0.5, 1.0 mu g/mL into thirty water samples ranged from 74.1% and 94.1% with the relative standard derivation (RSD) values from 1.9% to 6.7%. |
| 英文摘要: |
A simple and efficient technique based on liquid phase extraction with CH2Cl2 solvent followed by derivatization with (C2H5)(2)O center dot BF3 solution and confirmation analysis with GC-MS analytical method was developed for detecting the bensulfuron-methyl (BSM) residues in water. Box-Behnken response surface methodology was employed for optimization of the derivatization efficiency. According to the optimization model, the derivatization time of 45 min, derivatization temperature at 55 degrees C and 0.2 mL (C2H5)(2)O center dot BF3 solvent were selected as the optimal derivatization condition for obtaining the maximum desirability of response. Method validation was performed at 6 working standard levels (0.05, 0.1, 0.2, 0.5, 1.0, 5.0 mu g/mL) and the linearity of the calibration curve was linear well over the 6 fortification levels with the squared correlation coefficient of determination r(2) = 0.998 and the LOD was found to be 0.1 mu g/L for BSM herbicide. The mean value of BSM was detected from 0.0414 to 4.7542 mu g/mL at levels from 0.05 to 5 mu g/mL with the recoveries remained at the acceptable level (42.8-95.0%) with the RSD values from 3.5% to 6.2%, which is more accptable and desirable than the results obtained by LC methods. Moreover, the method allowed the determination of BSM residue in real paddy field water samples at concentrations between 0.0902 and 3.4605 mu g/L. Average recovery rates of the BSM spiked at levels 0.1, 0.2, 0.5, 1.0 mu g/mL into thirty water samples ranged from 74.1% and 94.1% with the relative standard derivation (RSD) values from 1.9% to 6.7%. |
| 刊物名称: |
Journal of Chromatography B-Analytical Technologies in the Biomedical and Life Sciences |
| 英文刊物名称: |
Journal of Chromatography B-Analytical Technologies in the Biomedical and Life Sciences |
| 论文全文: |
|
| 英文论文全文: |
|
| 全文链接: |
|
| 其它备注: |
|
| 英文其它备注: |
|
| 学科: |
|
| 英文学科: |
|
| 影响因子: |
|
| 第一作者所在部门: |
|
| 英文第一作者所在部门: |
|
| 论文出处: |
|
| 英文论文出处: |
|
| 论文类别: |
|
| 英文论文类别: |
|
| 参与作者: |
|
| 英文参与作者: |
Wang, J., Wang, G. P., Gao, C. Y., Yan, Y., Wen, B. L. |
|
 |
