农残分析质量控制（英文原版）

《QUALITY CONTROL PROCEDURES FOR PESTICIDE RESIDUES ANALYSIS》 Accreditation...........................................................................................................3 Sampling, transport, processing and storage of samples....................................3 Pesticide standards, calibration solutions, etc.....................................................4 Preparation, use and storage of working standards...........................................5 Extraction and concentration................................................................................6 Extract concentration and dilution to volume...................................................6 Contamination and interference...........................................................................6 Contamination...................................................................................................7 Analytical calibration, representative analytes, matrix effects and chromatographic integration.................................................................................7 Calibration.........................................................................................................8 Matrix effects and matrix-matched calibration...............................................10 Standard Addition............................................................................................10 Effects of pesticide mixtures on calibration....................................................10 Calibration for pesticides that are mixtures of isomers, etc............................11 Chromatographic integration...........................................................................11 Analytical methods and analytical performance...............................................11 Method validation............................................................................................11 Methods for determination of fat or dry weight content.................................12 Routine recovery determination......................................................................12 Proficiency testing and analysis of reference materials....................................13 Confirmation of results........................................................................................14 Principles of confirmation...............................................................................14 Confirmation by mass spectrometry (MS)......................................................15 Confirmation by an independent laboratory....................................................17 Reporting of results..............................................................................................17 Expression of results........................................................................................17 Calculation of results.......................................................................................17 Rounding of data.............................................................................................17 Qualifying results with uncertainty data..........................................................18 Interpretation of results....................................................................................19