首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Determination of POPs in environmental matrices – proficiency tests for Polish laboratories
Authors:Piotr Konieczka  Thomas P J Linsinger  Jacek Namieśnik
Institution:(1) Department of Analytical Chemistry, Chemical Faculty, Gdansk University of Technology, 11/12 G. Narutowicza Str., 80-952 Gdańsk, Poland;(2) European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg, 2400, Geel, Belgium
Abstract:Thirty Polish laboratories participated in proficiency tests (PT) for determination of persistent organic pollutants – POPs (PCBs – polychlorinated biphenyls, PAHs – polyaromatic hydrocarbons and pesticides) in solid environmental matrices (sediments, soil). Participants used their in-house method. The aim of the exercises was to obtain information about the “state of the art” of POPs analysis in environmental samples. The CV (coefficient of variation) of analytical results submitted varied from 45 to 65%, with an outlier rate 2 to 7%. The averages of results for all analytes were in good agreement with reference values. Statistical treatment of results was made. Comparison of the each result with the certified values characterizing the material has been done. Additionally, z-scores were calculated taking into account the uncertainty of a certified value and the acceptable deviation from the certified value in the range of −20% to +10% (in accordance with recommendations in the newest directives of European Union (EU) 1]); For rejecting outliers Hampel test has been applied.
Keywords:Proficiency test  Polychlorinated biphenyls  Polyaromatic hydrocarbons  Pesticides  River sediment  Soil  Gas chromatography
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号