环境空气二氧化氮和氮氧化物_allstar_dong的空间_1百度空间（Ambient air nitrogen dioxide and nitrogen oxides, _allstar_dong space, _1, Baidu space）.docVIP

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2017-09-02 发布于河南
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环境空气二氧化氮和氮氧化物_allstar_dong的空间_1百度空间（Ambient air nitrogen dioxide and nitrogen oxides, _allstar_dong space, _1, Baidu space）.doc

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环境空气二氧化氮和氮氧化物_allstar_dong的空间_1百度空间（Ambient air nitrogen dioxide and nitrogen oxides, _allstar_dong space, _1, Baidu space）

环境空气二氧化氮和氮氧化物_allstar_dong的空间_1百度空间（Ambient air nitrogen dioxide and nitrogen oxides, _allstar_dong space, _1, Baidu space） Ambient air: nitrogen dioxide and nitrogen oxides 2010-10-23, 15:121: Standard for environmental air, nitrogen oxides (nitric oxide and nitrogen dioxide), determination of hydrochloric acid, naphthalene ethylenediamine spectrophotometric method HJ479-2009 Nitrogen oxides: oxides of nitrogen that exist in the air with nitric oxide and nitrogen dioxide. Coefficient of oxidation: nitric oxide in the air through the acid solution of Potassium Permanganate oxidation tube after being oxidized into the total and through the sampling system of nitrogen dioxide and nitric oxide adsorbed generation ratio of azo dyes. Saltzman: the experimental coefficient with osmotic gas mixture prepared by nitrogen dioxide calibration, the ratio of azo dye liquid absorption generated is equivalent to the amount of nitrite is absorbed in the gas production process and through the sampling system of total nitrogen dioxide. The principle is that nitrogen dioxide in the air is absorbed by the absorption liquid in the first absorption bottle in series and reacts to form pink azo dyes. Nitric oxide in the air and liquid absorption reaction, through the oxidation tube by the acidic solution of Potassium Permanganate is oxidized into nitrogen dioxide, second series liquid absorption and absorption reaction of pink azo dye absorption bottle. The absorbance of the resulting azo dye at the wavelength of 540nm is proportional to the content of no2. The first and second branch absorption bottle sample absorbance were measured, calculated two absorption bottle in nitrogen dioxide and nitric oxide concentration, and the two is the concentration of nitrogen oxides (with nitrogen dioxide meter). The limit of detection for this standard method is 0.36 g/10mL absorption solution. When the total volume of the absorption liquid is 10mL, the sampling volume was 24L, the detection of nitroge