Các phương pháp được phát triển để phân tích các phương tiện truyền thông khác nhau cho các thông số cụ thể. Mỗi phương pháp đều IS được chấp thuận do Cơ quan Bảo vệ Môi trường (EPA), các tiết thủ tục nào, dụng cụ hiệu chuẩn, chuẩn bị mẫu, thủ tục phân tích, kiểm soát chất lượng và yêu cầu đối với công tác phân tích. EPA là phương pháp phân biệt Theo Để các phương tiện thông (matrix) của mẫu phân tích. Mỗi phòng thí nghiệm ĐÃ viết sách hướng dẫn đó có thủ tục cụ thể sử. | 18 Selected Methods for Determination of Metals in Environmental Samples METHODOLOGY Methods are developed to analyze diverse media for specific parameters. Each method is approved by the Environmental Protection Agency EPA which specifies the procedures instrument calibration sample preparation analytical procedures and quality control requirements for the analytical work. EPA methods are differentiated according to the media matrix of the sample analyzed. Each laboratory has a written guidebook that contains specific procedures used known as standard operating procedures SOPs . SOPs should be constantly revised to include new methodologies and procedural changes. The SOPs are an important tool for the quality assurance quality control QA QC operation of the laboratory. EPA-Approved Methods and References for Analyzing Water Samples Methods and References for Analyzing Drinking Water Methods for Chemical Analysis of Water and Wastes EPA 600 4-79-020 revised March 1983 Methods for Determining Organic Compounds in Drinking Water EPA 600 4-88-039 December 1988 Standard Methods for the Examination of Water and Wastewater APHA-AWWA-WPCF 19th ed. 1998 an updated edition is issued every 5 years Manual for Certification of Laboratories Analyzing Drinking Water EPA 570 9-90 008 April 1990 CFR Part 141 Subpart C and Subpart E monitoring and analytical requirements EPA 500 series should be used for organic analyses of drinking waters and raw source waters Methods and References for Analyzing Surface Waters and Wastewater Effluents Methods for Chemical Analysis of Water and Wastes EPA 600-4-79-020 revised in March 1983 Test Methods for Evaluating Solid Waste EPA SW-846 3rd ed. 1986 rev. ed. December 1987 40 CFR Part 136 Tables IA IB IC ID and IE July 1989 269 2002 by CRC Press LLC 270 Environmental Sampling and Analysis for Metals Methods and References for Analyzing Water Sources Surface and Groundwater Pursuant to 40 CFR Part 261 RCRA
