| 英文摘要 |
Following the requirements of the project for “The Review and Revision of some Water Analytical Methods” which was administered by the National Institute of Environmental Analysis (NIEA), the water analytical methods that were put in use before 1997 were screened and reviewed. Some of the methods which were either widely used or had regulated analytes were selected for updating, revising or validating. Methods were updated and revised according to the most current edition of the analytical method from USEPA, APHA standard method, and the “Quality Control Guidelines for Environmental Laboratories” by NIEA. Twelve method revisions were implemented in this project. These methods were Hexavalent chromium analysis – APDC chelation/Atomic Adsorption method (W321.50A), Residual chlorine analysis – DPD Colorimetric method (W408.50A), Cyanide analysis – Colorimetric method (W410.50A), Dissolved oxygen analysis – Iodometric method/Azide modification (W421.54C), Phenolics analysis – Colorimetric method (W520.50A), Total Hardness analysis – EDTA Titrimetric method (W208.50A), Sulfide analysis – Methylene Blue method (W433.50A), Color analysis – Platinum-Cobalt Colorimetric method (W201.50T), Nitrate analysis – Ultraviolet Spectrophotometric Screening method (W419.50A), Odor analysis – Threshold Odor Test (W206.50T), Selenium analysis – Hydride Generation/Atomic Adsorption method (W340.50A) and True color analysis – ADMI Tristimulus Filter method (W223.50B), respectively. In order to assist the analytical method user, the quality control data of single laboratory validation were also included in some of the methods. The format of the methods was also standardized for easier reading. Certain essential facts that were left out in the previous edition were added as well to ensure the method was complete as possible and to meet the needs of various EPA Divisions.
|