A DENUDER TECHNIQUE FOR THE MEASUREMENT OF NITROUS-ACID IN URBAN ATMOSPHERES

被引：83

作者：

FEBO, A

PERRINO, C

CORTIELLO, M

机构：

[1] Istituto sull'Inquinamento Atmosferico, C.N.R., Area della Ricerca di Roma, 00016 Monterotondo Stazione, Roma, Via Salaria Km 29 .300

来源：

ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS | 1993年 / 27卷 / 11期

关键词：

NITROUS ACID; DIFFUSION DENUDERS; SAMPLING ARTIFACTS; AIR POLLUTION; URBAN ENVIRONMENTS;

D O I：

10.1016/0960-1686(93)90235-Q

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A new denuder set-up for the measurement of nitrous acid in polluted atmospheres is described here. The set-up is composed of one tetrachloromercurate-coated denuder for the removal of SO2 and two downstream sodium carbonate-coated denuders for the determination of nitrous acid by the differential technique [Febo et al., 19, 1517-1530 1990]. The removal of SO2 is necessary in order to avoid the formation of artifact nitrite on the sulfite layer which results from the interaction between atmospheric SO2 and the Na2CO3 coating. Because of this mechanism, the measurement of HONO by means of the previously used NaCl-Na2CO3-Na2CO3 denuder set-up is heavily biased in all cases when SO2 and NO2 are present at high concentration levels (e.g. urban environments).

引用

页码：1721 / 1728

页数：8

共 18 条

[1]

ALLEGRINI A, 1990, PHYSICOCHEMICAL BEHA, P140

[2] ANNULAR DENUDER METHOD FOR SAMPLING REACTIVE GASES AND AEROSOLS IN THE ATMOSPHERE [J].

ALLEGRINI, I ;

DESANTIS, F ;

DIPALO, V ;

FEBO, A ;

PERRINO, C ;

POSSANZINI, M ;

LIBERTI, A .

SCIENCE OF THE TOTAL ENVIRONMENT, 1987, 67 (01) :1-16

[3] COMPARISON OF ATMOSPHERIC NITROUS-ACID MEASUREMENTS BY ANNULAR DENUDER AND DIFFERENTIAL OPTICAL-ABSORPTION SYSTEMS [J].

APPEL, BR ;

WINER, AM ;

TOKIWA, Y ;

BIERMANN, HW .

ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS, 1990, 24 (03) :611-616

[4] SIMULTANEOUS ABSOLUTE MEASUREMENTS OF GASEOUS NITROGEN SPECIES IN URBAN AMBIENT AIR BY LONG PATHLENGTH INFRARED AND ULTRAVIOLET VISIBLE SPECTROSCOPY [J].

BIERMANN, HW ;

TUAZON, EC ;

WINER, AM ;

WALLINGTON, TJ ;

PITTS, JN .

ATMOSPHERIC ENVIRONMENT, 1988, 22 (08) :1545-1554

[5] PREDICTION AND EXPERIMENTAL-EVIDENCE FOR HIGH AIR CONCENTRATION OF NITROUS-ACID IN INDOOR ENVIRONMENTS [J].

FEBO, A ;

PERRINO, C .

ATMOSPHERIC ENVIRONMENT PART A-GENERAL TOPICS, 1991, 25 (5-6) :1055-1061

[6]

FEBO A, 1987, TROPOSPHERIC NOX CHE, P61

[7]

FEBO A, 1990, ATMOS ENVIRON, V19, P1517

[8] A SODIUM-CARBONATE COATED DENUDER FOR DETERMINATION OF NITROUS-ACID IN THE ATMOSPHERE [J].

FERM, M ;

SJODIN, A .

ATMOSPHERIC ENVIRONMENT, 1985, 19 (06) :979-983

[9]

Finlayson-Pitts B.J., 1986, ATMOSPHERIC CHEM

[10] OBSERVATIONS OF NITROUS-ACID IN THE LOS-ANGELES ATMOSPHERE AND IMPLICATIONS FOR PREDICTIONS OF OZONE PRECURSOR RELATIONSHIPS [J].

HARRIS, GW ;

CARTER, WPL ;

WINER, AM ;

PITTS, JN ;

PLATT, U ;

PERNER, D .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1982, 16 (07) :414-419

← 1 2 →