On May 18, Xiling Gorge of the Yangtze River after rain, with high gorges and flat lakes, green mountains and green waters, and swirling clouds, formed a beautiful natural ecological beauty. Abstract: Mercury pollution is becoming a serious pollution faced by the world, especially coal-fired power plants account for a large share of it. In this paper, the mercury pollution situation at that time and the monitoring requirements of various governments are sorted out, and the calibrators, catalytic conversion methods, measurement methods, key points and precautions in the system planning of the mercury continuous emission monitoring system CEMS are introduced. Polaris Atmosphere News: Recently, Henan Province printed and distributed the operation plan of Henan Province to promote industrial restructuring and win the battle against pollution. The ultra-low emission dust meter plan requires that the ultra-low emission transformation of carbon, cement, glass, coking and electrolytic aluminum operations for steel and aluminum in the province should be completed by the end of 2019. The full text is as follows: On December 31, 2018, Li Ganjie, Minister of the Ministry of Ecology and Environment, went to Beijing, Langfang City, Hebei Province, and Tianjin to visit the front-line ecological environment monitoring and strengthening supervisors on behalf of the Party Leadership Group and the leadership of the Ministry of Ecological Environment Maintenance, and through them, extended New Year greetings to a wide range of cadres and workers of the ecological environment system in the country and all the people from all walks of life who care, support, and participate in the ecological environment maintenance.

At the Yufa Atmospheric Induction Monitoring Station of the Beijing South Passage of the Beijing Active Air Monitoring Network, Li Ganjie carefully understood the quality control, quality assurance and long-distance quality control of Beijing's active atmospheric monitoring, and checked the induction observation laboratory. From time to time, he stopped to watch the test equipment and learned about the operation of the equipment from the relevant responsible comrades. Li Ganjie indicated that the atmospheric environment monitoring should not only do a good job of routine indicator monitoring, but also do a good job of source analysis monitoring; We should do a good job in both statistical analysis and trend analysis. We should be more scientific, systematic and precise, and better serve to win the blue sky defense war. At the National Surface Water Quality Active Monitoring Station of Caozhuangzi Pumping Station in Tianjin, Li Ganjie listened to the operation report of the water station and checked the national water quality active induction and supervision platform. He said that we should continue to do a good job in the separate operation of surface water assessment section mining and surveying, and work together to play a positive role in water quality.

Li Ganjie emphasized that ecological environment monitoring is the fundamental operation of ecological environment maintenance and the "pillar" of ecological environment management. The ultra-low CEMS system is an important starting point and support for the battle against pollution. In recent years, we have continued to deepen the reform of the scope of ecological environment monitoring, vigorously strengthened the construction of monitoring networks, and effectively improved the quality of monitoring data, which has played an important role in urging local Party committees and governments to implement their responsibilities for ecological environment maintenance, resolutely eliminating "digital environmental protection", "environmental protection", and "image environmental protection", and ensuring that the improvement of ecological environment quality without "water" is completed. It is necessary to continuously strengthen the quality management of ecological environment monitoring, ensure that the monitoring data are "true, accurate and complete", further compact the territorial responsibility, and ensure that the effectiveness of the pollution prevention and control campaign can stand the test of history and practice.

Li Ganjie came to Yongqing County, Langfang City, Hebei Province and Wuqing District, Tianjin City to visit the working group that is strengthening supervision. "What group of operators are you? How long have you been here? Are there any difficulties?" Li Ganjie carefully inquired about the living and working conditions of the operators in the supervision group. He said that in promoting the fight against pollution, we have gradually formed a set of correct operational strategies and methods. One of the most important things is to "work with both hands", focusing on both the micro top-level planning and the micro promotion of implementation, so as to ensure that all policies and measures are effective. On the one hand, we launched the central ecological environment maintenance supervision, mainly to urge the local party committee, government and relevant departments to inspect the situation of environmental protection inaction and disorderly actions, and promote the implementation of "the same responsibility of the party and government" and "one post with two responsibilities" for ecological environment maintenance; On the other hand, the organization of ecological environment maintenance and supervision is mainly to help local governments deal with prominent ecological environment problems in key areas and key categories. Next, we should continue to give full play to the two effects of urging and helping, constantly promote the ecological environment maintenance supervision to carry out in depth, further improve the pertinence and effectiveness of strengthening supervision, and provide an important guarantee for the fight against pollution.

Li Ganjie pointed out in the survey that 2018 is an important milestone in the history of China's ecological civilization construction and ecological environment maintenance.     Key operations such as banning the entry of foreign wastes, promoting the professional discharge of waste burning power generation up to the standard, and the special action of "Green Shield 2018" nature conservation area supervision and inspection have achieved important results. The central ecological environment maintenance supervisor "looked back" to promote the handling of ecological environmental problems around a large number of people. The VOCs online monitoring system "take the case as a lesson, build an outstanding political ecology" special governance has been carried out in depth, and the start of the pollution prevention campaign has been outstanding The first battle was successful, the quality of the national ecological environment continued to improve, and the outstanding political ecology of a clean and upright atmosphere was further formed.

  We will increase our efforts and investment, firmly fight the battle against pollution, further improve the quality of the ecological environment, work together to promote high-quality economic development and high-level maintenance of the ecological environment, enhance people's sense of gain, happiness and security, and celebrate the 70th anniversary of the founding of the People's Republic of China with outstanding achievements.