全国首个挥发性有机化合物在线监测仪校准规范发布

Core Insights - The joint release of seven regional measurement technical specifications by the market regulatory authorities of Beijing, Tianjin, and Hebei marks a significant step towards standardization in key areas such as air pollution prevention and water quality monitoring [1][2] - The introduction of the first national calibration standard for VOC online monitoring instruments addresses the long-standing issue of lack of standards in the industry, enhancing data accuracy and reliability [1] - The new calibration standards for water quality analysis instruments unify various technical methods, providing reliable measurement support for surface water management and pollution prevention [1] Group 1: VOC Monitoring - The "Volatile Organic Compounds (VOC) Online Monitoring Instrument Calibration Specification" is the first of its kind in China, introducing a "humidity interference error" indicator to control measurement errors within ±5% FS and reduce repeatability to 2% [1] - This standard fills a gap in performance evaluation standards in the VOC monitoring field, providing stable and credible data support for joint air pollution prevention and control in the Beijing-Tianjin-Hebei region [1] Group 2: Water Quality Monitoring - The "Automatic Water Quality Intelligent Analyzer Calibration Specification" standardizes various technical types of instruments, ensuring that the measurement error for spectrophotometric instruments does not exceed ±5% and for volumetric instruments does not exceed ±3% [1] - This unification addresses previous inconsistencies in internal methods among manufacturers, facilitating reliable measurement for surface water management and pollution prevention decision-making [1] Group 3: Gas Meter Calibration - The "Gas Meter Calibration Device Calibration Specification" introduces a "modular overall calibration" model, ensuring accurate measurement values by testing core parameters such as measurement error, pressure loss, and sealing on a single platform [2] - This innovation promotes standardization in gas meter calibration, safeguarding fairness and safety in public measurement [2] Group 4: Collaborative Framework - Since the establishment of the measurement specification co-construction mechanism in 2017, the Beijing-Tianjin-Hebei region has released a total of 43 co-constructed measurement specifications and achieved intercommunication of 413 technical specifications [2] - The three regions have developed a comprehensive collaborative system through a "stock sharing, incremental co-construction" mechanism, forming a "Beijing-Tianjin-Hebei model" for cross-regional measurement cooperation [2]