Transcription of NITROGEN DIOXIDE (Diffusive sampler) 6700
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NITROGEN DIOXIDE (Diffusive sampler) 6700
NIOSH Manual of Analytical methods (NMAM), Fourth Edition NITROGEN DIOXIDE ( diffusive sampler )6700NO2MW: : 10102-44-0 RTECS: QW9805000 METHOD: 6700, Issue 2 EVALUATION: FULL Issue 1: 15 February 1984 Issue 2: 15 January 1998 OSHA :C 5 ppmNIOSH:STEL 1 ppm/15 minACGIH:3ppm; STEL 5 ppm(1 ppm = mg/m3 @ NTP)PROPERTIES:yellowish-brown fuming liquid or reddish-browngas; BP 21 C; MP C; d @ 20 C;vap density (air=1) : NITROGEN peroxide, dinitrogen tetroxide, AzoteSAMPLINGMEASUREMENTSAMPLER:DIFFUSIV E sampler (Palmes tube with three triethanolamine-treated screens) [1]SAMPLING TIME - MIN: 15 min @ 5 ppm- MAX: 8 h @ 10 ppmSHIPMENT:routineSAMPLESTABILITY:use sampler within 1 month afterpreparation; analyze within 1 month aftersamplingBLANKS:2 to 10 field blanks per setTECHNIQUE:VISIBLE ABSORPTIONSPECTROPHOTOMETRYANALYTE:nitri te ion (NO2-)REAGENT:aqueous solution of sulfanilamide, H3PO4,and N-1-naphthylethylenediaminedihydrochlori deWAVELENGTH:540 nmPATHLENGTH:1 cmCALIBRATION:solutions of NaNO2 in to g NO2 per sample [2]ESTIMATED g NO2 per samplePRECISION (r) [2]ACCURACYRANGE to 80 ppm-h ( to g NO2 per sample)
NITROGEN DIOXIDE: METHOD 6700, Issue 2, dated 15 January 1998 - Page 3 of 5 NIOSH Manual of Analytical Methods (NMAM), Fourth Edition C nanomoles NO—
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