At present, China pays more and more attention to environmental protection and energy conservation and emission reduction. As far as environmental pollution is concerned, domestic laws and regulations have been promul...At present, China pays more and more attention to environmental protection and energy conservation and emission reduction. As far as environmental pollution is concerned, domestic laws and regulations have been promulgated one after another and measures have been taken to regularly monitor and control fixed pollution sources. At present, China has carried out monitoring and control over chemical, iron and steel, cement and other places. Through monitoring the air emissions, the composition and sources of air pollution can be understood so as to facilitate the smooth development of domestic environmental monitoring and air pollution control. This paper will analyze the problems existing in the application of online monitoring system from the perspective of fixed pollution sources for reference.展开更多
Benzene derivatives are volatile organic compounds commonly present in the atmospheric environment,which are toxic and complex in composition.They have become a key regulatory object in China s atmospheric environment...Benzene derivatives are volatile organic compounds commonly present in the atmospheric environment,which are toxic and complex in composition.They have become a key regulatory object in China s atmospheric environment management.In this paper,Shimadzu Nexis GC-2030 gas chromatography was used to simultaneously detect eight benzene derivatives.According to the Environmental Monitoring—Technical Guideline on Drawing and Revising Analytical Method Standards(HJ 168-2010),the monitoring methods for benzene,toluene,ethylbenzene,p-xylene,m-xylene,isopropylbenzene,o-xylene,and styrene in the Stationary Source Emission—Determination of Benzene and Its Analogies—Bags Sampling/Direct Injection—Gas Chromatography(HJ 1261-2022)are verified,and their linear relationships,detection limits,precision and accuracy are analyzed.展开更多
文摘At present, China pays more and more attention to environmental protection and energy conservation and emission reduction. As far as environmental pollution is concerned, domestic laws and regulations have been promulgated one after another and measures have been taken to regularly monitor and control fixed pollution sources. At present, China has carried out monitoring and control over chemical, iron and steel, cement and other places. Through monitoring the air emissions, the composition and sources of air pollution can be understood so as to facilitate the smooth development of domestic environmental monitoring and air pollution control. This paper will analyze the problems existing in the application of online monitoring system from the perspective of fixed pollution sources for reference.
文摘Benzene derivatives are volatile organic compounds commonly present in the atmospheric environment,which are toxic and complex in composition.They have become a key regulatory object in China s atmospheric environment management.In this paper,Shimadzu Nexis GC-2030 gas chromatography was used to simultaneously detect eight benzene derivatives.According to the Environmental Monitoring—Technical Guideline on Drawing and Revising Analytical Method Standards(HJ 168-2010),the monitoring methods for benzene,toluene,ethylbenzene,p-xylene,m-xylene,isopropylbenzene,o-xylene,and styrene in the Stationary Source Emission—Determination of Benzene and Its Analogies—Bags Sampling/Direct Injection—Gas Chromatography(HJ 1261-2022)are verified,and their linear relationships,detection limits,precision and accuracy are analyzed.
