臭氧标准参考光度计数据采集方法及改进

发布时间：2019-03-08 08:50

【摘要】：为建立我国统一的环境空气臭氧自动监测量值溯源和传递体系,需采用臭氧标准参考光度计作为计量基准进行量值传递,以保证臭氧监测数据的量值溯源性和结果一致性。实验对臭氧标准参考光度计串口连接、模拟信号连接和仪器数据存储-手动输入3种数据采集方法进行了介绍,创新性地采用USB转DB 9串口线对数据采集方法进行了改进,均采用串口连接进行数据采集。采用改进后的方法同时对API T703、EC 9811、TF 49iPS 3台不同厂家的臭氧校准仪进行臭氧一级校准,所得校准曲线的平均斜率分别为1.011 99、1.002 87、1.005 17,平均截距分别为-0.548 14、-0.064 07、-0.212 10nmol/mol,均符合臭氧一级校准的指标。改进后的方法可适用于不同厂商、不同型号的仪器,操作更为方便快捷,数据采集更为真实有效,解决了模拟信号连接数据失真、仪器数据存储-手动输入耗时耗力的弊端,可极大地提高臭氧一级校准时数据采集的真实性及便捷性。
[Abstract]:In order to establish a unified environmental air ozone automatic monitoring value traceability and transmission system, ozone standard reference photometer should be used as the reference photometer to ensure the traceability and consistency of ozone monitoring data. This paper introduces three data acquisition methods of ozone standard reference photometer serial port connection, analog signal connection and instrument data storage-manual input, and improves the data acquisition method by using USB to DB 9 serial line innovatively. Serial port connection is used for data acquisition. API T703, EC 9811, TF 49iPS ozone calibrators from three different manufacturers were calibrated by the improved method. The average slope of the calibration curves was 1.011 99,1.002 87,1.005 17, respectively. The mean interceptions were-0.548 14, 0.064 07 and 0.212 10 nmol / mol, respectively, which were in accordance with the first grade calibration of ozone. The improved method can be applied to different manufacturers and different types of instruments. The operation is more convenient and rapid, the data acquisition is more real and effective, and the disadvantages of analog signal connection data distortion, instrument data storage-manual input time-consuming and energy-consuming are solved. It can greatly improve the authenticity and convenience of ozone level calibration data collection.
【作者单位】：环境保护部标准样品研究所;国家环境保护污染物计量和标准样品研究重点实验室;
【基金】：国家环境保护公益性行业科研专项(201409011) 国家环境保护标准制修订项目(2014-61) 环保部环境发展中心自主选题科技项目(ZZ-2016-04)
【分类号】：TP274.2

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