Determination of tsumacide residues in vegetable samples using a flow-injection chemiluminescence method.
A sensitive, simple and rapid flow-injection chemiluminescence (FI-CL) method is described to determine tsumacide pesticide residue based on the CL reaction of the alkaline degradation product of tsumacide with acidic KMnO(4) when rhodamine 6G was present. Under the optimum conditions, the relative CL intensity is linear with the concentration of tsumacide in the range of 2.0 x 10(-3)-0.20 mg/L. The detection limit is 6.6 x 10(-4) mg/L (3sigma) and the relative standard deviation for 2.0 x 10(-2) mg/L tsumacide solution was 2.28% (intra-day) and 4.85% (inter-day). The proposed method has been applied to determine the residue of tsumacide in vegetable samples and the recovery test is very satisfactory.
Liu
Haiyan
H
Department of Chemistry, East China Normal University, Shanghai 200062, People's Republic of China.
Hao
Yuhong
Y
Ren
Juanjuan
J
He
Pingang
P
Fang
Yuzhi
Y
D002219:Carbamates / Q000032:analysis*; D017022:Flow Injection Analysis / Q000379:methods*; D005506:Food Contamination / Q000032:analysis*; D008163:Luminescent Measurements / Q000379:methods* / Q000592:standards; D010573:Pesticide Residues / Q000032:analysis*; D011196:Potassium Permanganate; D015203:Reproducibility of Results; D012235:Rhodamines; D014675:Vegetables / Q000737:chemistry*
D002219:Carbamates; D010573:Pesticide Residues; D012235:Rhodamines; D011196:Potassium Permanganate; C026188:rhodamine 6G; C008484:metacrate