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http://dx.doi.org/10.7585/kjps.2015.19.3.218

Proficiency Testing for the HPLC Analysis of Azoxystrobin, Imidacloprid and Methabenzthiazuron Residues in Soil  

Kim, Chan-Sub (Agro-materials Safety Evaluation Division, National Academy of Agricultural Science, Rural Development Administration)
Son, Kyeong-Ae (Agro-materials Safety Evaluation Division, National Academy of Agricultural Science, Rural Development Administration)
Gil, Geun-Hwan (Agro-materials Safety Evaluation Division, National Academy of Agricultural Science, Rural Development Administration)
Im, Geon-Jae (Agro-materials Safety Evaluation Division, National Academy of Agricultural Science, Rural Development Administration)
Publication Information
The Korean Journal of Pesticide Science / v.19, no.3, 2015 , pp. 218-229 More about this Journal
Abstract
The proficiency testing for the residue laboratories of pesticide registration was conducted in order to improve the reliability and the ability for pesticide residue analysis. On November 2012 the testing was carried out using the soil collected and kept as the moistened state for five years, which was expected to very low residue levels of pesticides. The soil was fortified with azoxystrobin, imidacloprid and methabenzthiazuron in a manner similar to prepare soil samples for indoor soil degradation test, and then sub-samples were prepared for the distribution to participants. Some of them were randomly selected for confirm of homogeneity and to ensure the stability of samples at room temperature. Samples were consisted of two soils treated as different levels, one of which was used to the assessment and another used to confirm. In addition, provided three standard solutions, respectively concentration of 10 mg/L, and untreated soil. Forty eight institutions submitted results. The medians of results were used as the assigned values for pesticide residues. Fitness for purpose standard deviation of proficiency test was calculated by applying 20% RSD as the coefficient of variation allowed in the soil residue test. Z-score was applied for evaluation of individual pesticides, and the average of the absolute value of the Z-score for the overall assessment of pesticides. Laboratories evaluated the absolute value of the Z-score less than 2 to fit the case of azoxystrobin were 48, imidacloprid and methabenzthiazuron 46.
Keywords
pesticide; residue analysis; quality assurance; proficiency test;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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