tailieunhanh - Polar-Organic-Chemical-Integrative Sampler

Each laboratory that uses this method is required to operate a formal quality control program. The minimum requirements of this program consist of an initial demonstration of laboratory capability and an ongoing analysis of spiked samples to evaluate and document data quality. The laboratory must maintain records to document the quality of data that is generated. Ongoing data quality checks are compared with established performance criteria to determine if the results of analyses meet the performance characteristics of the method. When results of sample spikes indicate atypical method performance, a quality control check standard must be analyzed to confirm that the measurements were. | Author manuscript published in Environmental Science and Pollution Research 2012 1-9 DOI s11356-012-1284-3 hal-00749855 version 1 - 8 Nov 2012 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Polar-Organic-Chemical-Integrative Sampler POCIS uptake rates for 17 polar pesticides and degradation products laboratory calibration Imtiaz Ibrahima b Anne Togolaa Catherine Gonzalezb. Authors aBureau de recherche géologiques et minières BRGM Laboratory Division 3 avenue Claude Guillemin 45100 Orléans France bEcole des mines d Alès EMA LGEI Center 6 Avenue de Clavieres 30319 Alès France Tel 33 Fax 33 aBureau de recherche géologiques et minières BRGM Laboratory Division 3 avenue Claude Guillemin 45100 Orléans France Tel 33 Fax 33 . C. Gonzalez bEcole des mines d Alès EMA LGEI Center 6 Avenue de Clavieres 30319 Alès France Catherine. gonzalez@ Tel 33 Fax 33 Abstract Polar organic chemical integrative samplers POCIS are useful for monitoring a wide range of chemicals including polar pesticides in water bodies. However few calibration data are available which limits the use of these samplers for time-weighted average concentration measurements in an aquatic medium. This work deals with the laboratory calibration of the pharmaceutical 1 32 configuration of a polar organic chemical-integrative sampler pharm-POCIS for calculating the 33 sampling rates of 17 polar pesticides logKow commonly found in water. The 34 experiment conducted for 21 days in a continuous water flow-through exposure system showed 35 an integrative accumulation of all studied pesticides for 15 days. 3 compounds metalaxyl 36 azoxystrobine and terbuthylazine remained integrative for the 21-day experiment. The sampling 37 rates measured ranged from to 279 mLday-1 and increased with the hydrophobicity of .