| Title |
Interlaboratory Study for Proficiency Testing on the Water Toxicity Determinations by Acute Toxicity Test with Daphnia magna |
| Authors |
김종민 ( Jong Min Kim ) ; 신기식 ( Ki Sik Shin ) ; 유순주 ( Soon Ju Yu ) ; 김명옥 ( Myeong Ock Kim ) ; 최성헌 ( Sung Hun Choe ) |
| DOI |
https://doi.org/10.15681/KSWE.2014.30.6.632 |
| Keywords |
Acute toxicity test; Daphnia magna; Interlaboratory comparison; proficiency testing; TU |
| Abstract |
Proficiency testing by interlaboratory comparisons is used to determine the performance of individual laboratories. In order to verify the quality of acute toxicity testing with Daphnia magna, National Institute of Environmental Research in South Korea is regularly organizing interlaboratory comparisons to estimate the analytical accuracy of different laboratories . Total 58 laboratories located in South Korea took part in interlaboratory proficiency testing scheme with three proficiency testing samples. TU(Toxic Unit) values of each laboratory were determined and robust z-score was calculated in order to evaluate the proficiency levels. Based on the robust z-score classification, 74 % of the participant laboratories showed a satisfactory performance(43 laboratories). The main reason of ‘unsatisfactory’ performance seemed to be considered that the unsuitable management of test organism incubation system and the lack of experience on the identification of the test organism condition by effect of toxicity. |