HAOHAN环境空气非甲烷总烃连续自动监测系统技术规定甲烷复合柱HH-NMHC1

为规范环境空气非甲烷总烃连续监测系统安装与验收、日常运维和质量控制等工作，提高环境空气非甲烷总烃自动监测数据质量，中国环境监测总站联合上海市环境监测中心等单位组成的编制组，研究制定了《环境空气非甲烷总烃连续自动监测系统技术规定（试行）》（以下简称《技术规定》），并于2021年1月印发全国生态环境监测系统试行。

为确保《技术规定》中的各项指标科学可行，编制组组织市场较常见的非甲烷总烃连续自动监测仪器开展实验室标准气体和环境空气比对测试，15台仪器40余位技术人员参与测试，近20种标准气体，获取有效数据几十万条。根据仪器实际测试结果，并经过仪器厂商交流和多次专家讨论，重点针对环境空气中非甲烷总烃浓度水平低等特点，明确了环境空气非甲烷总烃连续自动监测系统的方法，根据实测数据提出了环境空气非甲烷总烃连续自动监测系统验收的性能指标要求，包括检出限、空白、峰型、校准曲线、24h漂移、重复性、准确性、高浓度残留、响应时间、多组分示值误差等，以及系统质量控制的周期和要求等。

环境空气非甲烷总烃不仅对大气环境和人体健康有重要的影响，也是光化学监测网的重要监测指标之一。生态环境部《关于加强挥发性有机物监测工作的通知》（环办监测函[2020]335号）文件要求“加强VOCs自动监测能力建设，有条件的城市逐步开展NMHC自动监测试点工作”，目前国内有100余个城市已经开展了环境空气非甲烷总烃自动监测。随着《技术规定》的印发试行，系统安装、验收和运维质控等相关工作开展将有据可依，监测数据的准确性和可靠性会进一步提高，根据试行过程中的反馈意见我们也将不断修订完善。


 

名称：甲烷总烃复合柱
规格：1m*1/8
型号：HH-NMHC-1
应用：环境空气非甲烷总烃连续自动监测技术规定（试行）2021

 

浩瀚色谱（山东）应用技术开发有限公司，与时俱进，研制生产非甲烷总烃直测法核心部件反吹作用的HH-NMHC-1专用填充柱，柱效高，分离好，峰型对称，结果准确可靠。

In order to standardize the installation and acceptance, daily operation and maintenance, and quality control of the continuous monitoring system for non methane total hydrocarbons in ambient air, and improve the quality of the automatic monitoring data for non methane total hydrocarbons in ambient air, a compilation team composed of China National Environmental Monitoring Center and Shanghai Environmental Monitoring Center has studied and formulated the Technical Regulations for Continuous Automatic Monitoring System for Non methane Total Hydrocarbons in Ambient Air (Trial) (hereinafter referred to as the Technical Regulations), The National Ecological Environment Monitoring System will be issued for trial implementation in January 2021.



In order to ensure that all indicators in the Technical Regulations are scientific and feasible, the preparation team organized the continuous automatic monitoring instruments for non methane total hydrocarbons, which are common in the market, to carry out the comparative test of laboratory standard gas and ambient air. More than 40 technicians from 15 instruments participated in the test, nearly 20 kinds of standard gas, and obtained hundreds of thousands of valid data. According to the actual test results of the instrument, and through the communication between the instrument manufacturers and many experts' discussions, the method of the continuous automatic monitoring system for non methane total hydrocarbons in the ambient air was clarified, focusing on the low concentration level of non methane total hydrocarbons in the ambient air. Based on the measured data, the performance index requirements for the acceptance of the continuous automatic monitoring system for non methane total hydrocarbons in the ambient air were proposed, including the detection limit, blank, peak type, calibration curve, 24h drift Repeatability, accuracy, high concentration residue, response time, multi-component indication error, etc., as well as the cycle and requirements of system quality control.



Non methane total hydrocarbon in ambient air not only has an important impact on the atmospheric environment and human health, but also is one of the important monitoring indicators of the photochemical monitoring network. The Notice on Strengthening the Monitoring of Volatile Organic Compounds (HBMH [2020] No. 335) issued by the Ministry of Ecology and Environment requires "to strengthen the capacity building of VOCs automatic monitoring and gradually carry out the pilot work of NMHC automatic monitoring in cities where conditions permit". At present, more than 100 cities in China have carried out automatic monitoring of non methane total hydrocarbons in ambient air. With the issuance and trial implementation of the Technical Regulations, the system installation, acceptance, operation and maintenance quality control and other related work will be based on evidence, the accuracy and reliability of monitoring data will be further improved, and we will continue to revise and improve according to the feedback during the trial implementation process.






Name: Methane hydrocarbon composite column

Specification: 1m * 1/8

Model: HH-NMHC-1

Application: Technical Regulation for Continuous Automatic Monitoring of Non methane Total Hydrocarbons in Ambient Air (Trial) 2021





Haohan Chromatographic (Shandong) Application Technology Development Co., Ltd. has developed and produced HH-NMHC-1 special packed column for backflushing, the core component of direct measurement of non methane total hydrocarbons, with high column efficiency, good separation, symmetrical peak type and accurate and reliable results