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[Method-performance studies of notified analytical method for clofentezine]
K Sasaki1, T Tatsuno, M Nakamura
1National Institute of Health Sciences: 1-18-1, Kamiyoga, Setagaya-ku, Tokyo 158-8501, Japan.
Summary
This study validates a revised analytical method for clofenzine residue detection in various foods. The method demonstrates good performance with high recovery rates and low detection limits, ensuring accurate pesticide analysis.
Area of Science:
- Analytical Chemistry
- Food Safety
- Pesticide Residue Analysis
Context:
- Accurate quantification of pesticide residues is crucial for food safety and regulatory compliance.
- Clofenzteine is a widely used acaricide/insecticide, necessitating reliable analytical methods for its detection.
- Previous analytical methods required revision to meet current performance standards.
Purpose:
- To evaluate the performance of a newly notified, revised analytical method for clofenzine.
- To determine the method's accuracy, precision, and sensitivity across various food matrices.
- To validate the method's suitability for routine monitoring of clofenzine residues.
Summary:
- Method-performance studies were conducted for a revised analytical method of clofenzine.
- Clofenzteine was spiked in azuki beans, apple, orange, banana, grape, tea powder, and tea extract.
- Analysis across 6 laboratories showed mean recovery rates from 78.4% to 85.2%, with repeatability relative standard deviation (RSDr) from 2.2% to 4.6% and reproducibility relative standard deviation (RSDR) from 4.8% to 10.3%.
- Detection limits ranged from 0.005 to 0.01 microgram/g, indicating high sensitivity.
Impact:
- The validated analytical method provides a reliable tool for accurate clofenzine residue determination in diverse food products.
- Improved analytical capabilities enhance food safety monitoring and regulatory enforcement.
- This method supports international trade by ensuring compliance with pesticide residue limits.