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申请号:202010010151.0 公开号:CN111007058A 主分类号:G01N21/76
摘要:【中文】本申请涉及一种氮氧化物和臭氧一体化分析仪。该氮氧化物和臭氧一体化分析仪包括:反应室,包括第一气体入口、第二气体入口、气体出口和通光孔;荧光探测器,荧光探测器的探测部分与通光孔相连;气泵,与气体出口连接;二氧化氮还原气路,与第一气体入口连接;标准一氧化氮气路,与第一气体入口连接;臭氧发生气路,与第二气体入口连接;第一进样气路,与第一气体入口连接;第二进样气路,与第二气体入口连接;样气入口,分别与二氧化氮还原气路、臭氧发生气路、第一进样气路和第二进样气路连接。本申请的一体化分析仪可同时测量环境空气中的氮氧化物和臭氧,既解决了臭氧测量的干扰问题,又大大节约了仪器成本。 【EN】The application relates to a nitrogen oxide and ozone integrated analyzer. This nitrogen oxide and ozone integration analysis appearance includes: the reaction chamber comprises a first gas inlet, a second gas inlet, a gas outlet and a light through hole; the detection part of the fluorescence detector is connected with the light through hole; the air pump is connected with the air outlet; the nitrogen dioxide reduction gas circuit is connected with the first gas inlet; the standard nitric oxide gas circuit is connected with the first gas inlet; the ozone generating gas circuit is connected with the second gas inlet; the first sample injection gas path is connected with the first gas inlet; the second sample injection gas path is connected with the second gas inlet; and the sample gas inlet is respectively connected with the nitrogen dioxide reduction gas circuit, the ozone generation gas circuit, the first sample injection gas circuit and the second sample injection gas circuit. The utility model provides a nitrogen oxide and ozone in the integrated analyzer can the simultaneous measurement ambient air, has both solved the interference problem of ozone measurement, has practiced thrift the instrument cost again greatly.
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申请号:202010010722.0 公开号:CN110987911A 主分类号:G01N21/76
摘要:【中文】本申请涉及一种基于化学发光法的臭氧分析方法及臭氧分析仪。该臭氧分析方法包括:测量样气的第一荧光信号;使样气中的臭氧与过量一氧化氮进行反应以生成激发态的二氧化氮;测量二氧化氮返回基态过程中的第二荧光信号;根据第一荧光信号和第二荧光信号分析样气中的臭氧浓度。本申请的臭氧分析方法,臭氧与一氧化氮气体发生化学发应后发光,化学反应本身以及发光特征波长都具有较高的选择性,所以可以解决共存物质干扰的问题,使得测量结果更加准确可靠。 【EN】The application relates to an ozone analysis method and an ozone analyzer based on a chemiluminescence method. The ozone analysis method comprises the following steps: measuring a first fluorescent signal of the sample gas; reacting ozone in the sample gas with excess nitric oxide to generate excited nitrogen dioxide; measuring a second fluorescent signal during the return of the nitrogen dioxide to the ground state; and analyzing the ozone concentration in the sample gas according to the first fluorescence signal and the second fluorescence signal. According to the ozone analysis method, after the ozone and the nitric oxide gas are subjected to chemical reaction, the ozone and the nitric oxide gas emit light, the chemical reaction and the light-emitting characteristic wavelength have high selectivity, so that the problem of interference of coexisting substances can be solved, and the measurement result is more accurate and reliable.
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