KS I ISO 7996-2006 Ambient air－Determination of the mass concentration of nitrogen oxides(Chemiluminescence method)《环境空气 氮氧化物质量浓度的测定 化学发光法》.pdf

1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2006 10 30 http:/www.kats.go.krKS I ISO 7996 ( ) KS I ISO 7996： 2006 (2011 ) I ISO 7996： 2006 : ( ) ( ) KIST ( ) : (http:/www.standard.go.kr) ： ：2001 1 10 ：2006 10 30 ：2011 12 26 2011-0622 ： ： ( 02- 509-7270) (http:/www.kats.go.kr). 10 5 , . ICS 13.040.20 K

2、S I ISO ( ) 7996： 2006(2011 ) Ambient air Determination of the mass concentration of nitrogen oxides(Chemiluminescence method) 1985 1 ISO 7996 Ambient air Determination of the mass concentration of nitrogen oxides Chemiluminescence method , . 1. . 25 , 101.3 kPa (1) 12.5 mg/m3 , 19 mg/m3 . 6.6 . (1)

3、 . NO： 1 mg/m3 0.81 ppm(V/V) 1 ppm(V/V) 1.23 mg/m3 NO2： 1 mg/m3 0.53 ppm(V/V) 1 ppm(V/V) 1.88 mg/m3 2. . . KS M ISO 6142 KS M ISO 6144 ISO 6349 ISO 6711 3. ( ) (reaction chamber) . , (photomultiplier tube) . . . (contribution) . (dual type) (cyclic type) . . , . I ISO 7996： 2006 2 . , . (bypass or p

4、ass) . 4. (luminescence) . . . NO + O3 NO2*+ O2NO2* NO2 +h v (1 200 nm) . 5. 1 a) , 1 b) ( ) 1 c) ( ) . (5.15.10). 5.1 (sample line) . . . PTFE(polytetrafluoroethylene) FEPperfluoro(ethylene/propylene) . . . 5.2 . PTFE . (sampling site) . . 5.3 2 % . . 5.4 (爐 ) , , , . 400 95 % . . 5.5 ( ) (high vol

5、tage silent electric discharge) . , . . . . 5.6 . ( , I ISO 7996： 2006 3 ) . . . 5.7 600 nm . . 5.8 (photomultiplier tube) . (background noise) . 5.9 . . 5.10 , . . 5.11 ( ) (6.1 ) 5.11.1 (source) 1 ppm(V/V) . . 5.11.2 (source) 5.11.3 . 5.11.4 (爐 ) . 6. . . . . 6.1 ( ) (5.25.10) . . 1 . (NOx) (： res

6、ponse) . 2 (5.11 ) . , ( ) ( 2 .). ( ) . 1090 % . a) R1, P1 . b) . . R2, P2 . c) . (R3, R4,R5 ) (P3,P4,P5 ) . R2/R1,R3/R1,R4/R1 1 ( ). , I ISO 7996： 2006 4 . d) . nnnPPPRPR111)()(100 Rn Pn： 6.2 6.2.1 (ISO 6349) . 50 % (zero air) 6.1 (channel) . 6.2.2 3 . 6.2.2.1 1 % , . 6.2.2.2 (permeation cell) . .

7、 6.2.2.3 1 . 0.05 . 6.2.2.4 ( ) . 6.2.2.5 . (分岐管 ) (vent) , . 6.2.3 3 . . . . . . 23 (pre-reactor) . . . , . . 6.3 6.3.1 3 3 (1) . 3 (2) . (upper limit) 80 % . I ISO 7996： 2006 5 (NO) ppm(V/V) . (NO) = 21qvqvKqm+ (1) qm： (permeation rate)(g/min) K： (conversion factor). 25 , 101.3 kPa 0.532 L/g qv1：

8、(L/min) qv2： (L/min) (NO) (g/m3) . (NO) =21323.110qvqvKqm+(2) , (span) . % span = L100)NO( (NO)(3) L： (NO)： ppm(V/V) qv1 qv2 5 . . . 80 % . 6.3.2 3 3 (1) . 80 % . (1) (3) . (NO) (NO2) (NOx) , (NO) (NO2) (NOx) . . ( ) qv2 . , . ( ) . . 1. (NO2) (g/m3) . (NO2) =21388.110qvqvKqm+(4) 2. . . 3. . I ISO 7

9、996： 2006 6 a) . KS M ISO 6142 KS M ISO 6144 ISO 6711 . b) (source) (gas phase) , . 6.4 5.1 . 6.5 (logger)/ . 6.6 . . , , , , PAN(peroxyacetylnitrate) . . . . 7. (6.5) 25 , 101.3 kPa (g/m3) ppm(V/V)(1) . 8. . a) b) c) d) ( ) I ISO 7996： 2006 7 1 a) ( ) 1 b) ( ) x x I ISO 7996： 2006 8 1 c) 2 (NOx ) U

10、V (source)( ) NO NOx xI ISO 7996： 2006 9 3 (1) (2) . I ISO 7996： 2006 10 () , . NO 12 mg/m3 NO2 18 mg/m3 NO 10 g/m3 NO2 15 g/m3 1224 h 1 % full scale 24 h 2 % full scale Lag time 5 s Rise time 20 s (5 s time constant) Fall time 20 s (5 s time constant) 1 %(20 % full scale) 2 %(80 % full scale) ( 1 0

11、00g /m3 ) 1 % full scale 7 d , 095 % 1045 Lag time, Rise time, Fall time, , (1 000g/m3 ) ISO 6879： 1983(Air quality Performance characteristics and related concepts for air quality measuring methods) . ( ) 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KSKSKSSKSKS KSKS SKS KSKS SKSKS KSKSKSKorean Agency for Technology and Standards http:/www.kats.go.kr KS I ISO 7996： 2006 Ambient airDetermination of the mass concentration of nitrogen oxides(Chemiluminescence method)ICS 13.040.20