DETERMINATION OF GASEOUS-HYDROGEN PEROXIDE AT PARTS-PER-TRILLION LEVELS WITH A NAFION MEMBRANE SCRUBBER AND A SINGLE-LINE FLOW-INJECTION SYSTEM

被引：25

作者：

ZHANG, G ^{[1
]}

DASGUPTA, PK ^{[1
]}

SIGG, A ^{[1
]}

机构：

[1] UNIV BERN,INST PHYS,CH-3012 BERN,SWITZERLAND

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 260卷 / 01期

关键词：

FLOW SYSTEM; HYDROGEN PEROXIDE; NAFION MEMBRANE SCRUBBER;

D O I：

10.1016/0003-2670(92)80126-R

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Gaseous hydrogen peroxide was collected continuously with a high efficiency Nafion membrane diffusion scrubber. An ammoniacal solution of a peroxidase-like catalyst, hematin, was pumped through a porous hydrophobic membrane reactor that allowed the introduction of a substrate, p-cresol. The mixed hematin-p-cresol solution was then pumped through the scrubber. The H2O2 reaction product, 2,2'-dihydroxy-4,4'-dimethylbiphenyl, was monitored fluorimetrically, with a detection limit of 5 x 10(-12) atm H2O2(g). The system response exhibited excellent linearity over the range of ambient concentrations, 0-10(-8) atm. Reproducibility at typical ambient concentrations was ca. 2% in R.S.D.

引用

页码：57 / 64

页数：8

共 20 条

[1] MEASUREMENTS OF ATMOSPHERIC HYDROGEN-PEROXIDE IN THE GAS-PHASE AND IN CLOUD WATER AT MT MITCHELL, NORTH-CAROLINA [J].