CONTINUOUS GENERATION SYSTEM FOR LOW-CONCENTRATION GASEOUS NITROUS-ACID

被引：71

作者：

TAIRA, M ^{[1
]}

KANDA, Y ^{[1
]}

机构：

[1] NATL LAB HIGH ENERGY PHYS,OHO,IBARAKI 305,JAPAN

来源：

ANALYTICAL CHEMISTRY | 1990年 / 62卷 / 06期

关键词：

D O I：

10.1021/ac00205a018

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A flow type generation system based on the reaction of sodium nitrite solution with sulfuric acid has been developed for parts per billion levels of nitrous acid. The reagent solutions are continuously pumped Into a reaction vessel and drawn off to waste. A carrier gas Is passed through a mixture of the reagent solutions in the vessel and continuously purges nitrous acid vapor from the mixture. Nitrous acid output of the generator Is characterized by using a Na2CO3,-lmpregnated filter and a chemiluminescent NOx monitor. A stable generation of nitrous acid of known concentration can readily be achieved by adjusting the concentration of sodium nitrite solution. © 1990, American Chemical Society. All rights reserved.

引用

页码：630 / 633

页数：4

共 7 条

[1] SEQUENTIAL, SELECTIVE HOLLOW TUBE PRECONCENTRATION AND CHEMILUMINESCENCE ANALYSIS SYSTEM FOR NITROGEN-OXIDE COMPOUNDS IN AIR [J].