Analysis of Pesticides in Food and Environmental Samples - Chapter 5

Kết quả của phép đo có nên Cung cấp thông tin đáng tin cậy và phòng thí nghiệm Nếu có thể chứng minh tính chính xác của phép đo với bằng chứng Tài liệu. Các nhà phân tích để thực hiện Trách nhiệm nghiêm trọng sản xuất kịp thời và thích hợp phân tích kết quả, và hoàn toàn tài khoản cho chất lượng công trình của họ. các Mở rộng quốc gia và quốc tế thương mại, The Trách nhiệm của các cơ quan đăng ký quốc gia cho phép sử dụng lâu trước đây: các hóa chất cần thử nghiệm phương pháp đáng. | 5 Quality Assurance Árpád Ambrus CONTENTS Introduction. 125 Quality Characterization of the Uncertainty and Bias of the Methods. 127 Uncertainty of the Measurement Results. 128 Systematic Error Bias of the Measurements. 130 Sampling. 132 Quality of Samples . 132 Sampling of Commodities of Plant and Animal Origin. 134 Estimation of Uncertainty of Sampling . 135 Sample Preparation and Processing . 136 Stability of Residues . 138 Stability during Storage. 138 Stability of Residues during Sample Processing. 139 Method Validation. 141 Internal Quality Control. 142 Interlaboratory Studies . 146 References . 147 INTRODUCTION The results of measurements should provide reliable information and the laboratory should be able to prove the correctness of measurements with documented evidence. Analysts carry serious responsibilities to produce correct and timely analytical results and are fully accountable for the quality of their work. The expanding national and international trade the responsibility of national registration authorities permitting the use of various chemicals required long ago reliable test methods which were acceptable by all parties concerned. The accuracy and precision of the analytical results may be assured by proficient analysts applying properly validated methods which are fit for the purpose in a laboratory accredited according to the relevant standards or 2 Several documents and guidelines had been and are developed to assist the analysts to apply the relevant analytical quality control AQC 3 quality assurance QA principles in their diverse daily work and to provide guidance for accreditation purposes. The Codex Committee on Pesticide Residues CCPR continuously updates the Guidelines on Good Laboratory Practice 4 2007 by Taylor Francis Group LLC. which also includes detailed information on the minimum criteria for validation of methods.