Simultaneous determination of omethoate and dichlorvos by capillary electrophoresis.
A capillary electrophoresis method has been developed for the analysis of omethoate and dichlorvos. Response surface methodology (RSM) was used to optimize the separate conditions for simultaneous detection of omethoate and dichlorvos. The results indicated that the optimal conditions for omethoate and dichlorvos determination were; pH 7.64, SDS concentration 67.5 mM, separation voltage 19.0 KV. Quantitative linear ranges were 1.0-300 microg/mL for omethoate and dichlorvos with correlation of 0.9967 and 0.9965, respectively. The limits of detection were 0.046 microg/mL and 0.031 microg/mL for omethoate and dichlorvos, with relative standard deviations (R.S.D.) <3.6%. The value of recoveries for omethoate and dichlorvos were arranged from 94.1% to 106.0%.
Tao
Yugui
Y
Engineering Technology Research Center of Microbial Fermentation Anhui Province, Wuhu, 241000, Anhui, Peoples' Republic of China. taoyugui888@yahoo.com.cn
Wang
Yaoming
Y
Ye
Lianbin
L
Li
Hefei
H
Wang
Qiang
Q
D002021:Buffers; D003627:Data Interpretation, Statistical; D004006:Dichlorvos / Q000032:analysis*; D004117:Dimethoate / Q000031:analogs & derivatives* / Q000032:analysis; D019075:Electrophoresis, Capillary; D006863:Hydrogen-Ion Concentration; D007202:Indicators and Reagents; D007306:Insecticides / Q000032:analysis*; D012015:Reference Standards; D012044:Regression Analysis; D012967:Sodium Dodecyl Sulfate; D013501:Surface-Active Agents
D002021:Buffers; D007202:Indicators and Reagents; D007306:Insecticides; D013501:Surface-Active Agents; C002302:dimethoxon; D012967:Sodium Dodecyl Sulfate; D004006:Dichlorvos; D004117:Dimethoate