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用荧光素荧光淬灭法测定环境大气中微量NO_x 被引量:1

FLUORESCENCE QUENCHING METHOD FOR DETERMINATION OF TRACE NO_x IN AMBIENT AIR SAMPLES WITH FLUORESCEIN
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摘要 荧光素和硝酸根在浓硫酸(90%)中反应生成二硝基染料,荧光素发生荧光,而产物则没有荧光,通过测定最终反应溶液荧光的降低程度,就能测定硝酸根含量。本方法灵敏度高,可应用于环境大气中NOx的测定,结果满意。 luorescein is known to react with nitrate in the concentrated sulfuric acid (90% )to produce a di-nitrated dye. Since fluorescein fluoresces,and the reaction product does not,This method was used to determine trace NOx in ambient air samples with satisfactory results.
出处 《山东建材学院学报》 1994年第2期94-96,共3页 Journal of Shandong Institute of Building Materials
关键词 荧光素 荧光淬灭法 氮氧化物 大气 fluorescein fluorescence quenching method nitrogen oxide
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