Development of an Analytical Method for Chloropicrin Determination in Hulled Rice by GC-ECD and GC-MS
2013
Do, J.A., National Institute of Food and Drug Safety Evaluation, Osung, Republic of Korea | Choi, J.H., National Institute of Food and Drug Safety Evaluation, Osung, Republic of Korea | Park, H.J., National Institute of Food and Drug Safety Evaluation, Osung, Republic of Korea | Park, Y.C., National Institute of Food and Drug Safety Evaluation, Osung, Republic of Korea | Yoon, H.J., MFDS, Osung, Republic of Korea | Choi, D.M., MFDS, Osung, Republic of Korea | Oh, J.H., MFDS, Osung, Republic of Korea
A simple and sensitive analytical method was developed using gas chromatograph with electron capture detector (GC-ECD) and gas chromatograph-mass spectrometer (GC-MS) for determination and identification of chloropicrin. Because of small molecular weight and high volatile properties of chloropicrin, analytical method was developed utilizing headspace extraction and direct injection to the GC. The developed method was validated using hulled rice sample spiked with chloropicrin at different concentration levels, 0.1 and 0.5 mg/kg. Average recoveries of chloropicrin (using each concentration three replicates) ranged 77.7~79.3% with relative standard deviations less than 10% and calibration solutions concentration in the range 0.005~0.5 μg/mL, and limit of detection (LOD) and limit of quantification (LOQ) were 0.004 and 0.01 mg/kg, respectively. The result showed that developed analytical methods was successfully applied to detect a small amount of chloropicrin in hulled rice.
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