Transcription of SULFUR DIOXIDE 6004
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SULFUR DIOXIDE 6004
SULFUR DIOXIDESULFUR DIOXIDE 6004SO2 MW: CAS: 7446-09-5 RTECS: WS4550000 METHOD: 6004, Issue 2 EVALUATION: PARTIALI ssue 1: 15 May 1989 Issue 2: 15 August 1994 OSHA :5 ppmNIOSH: 2 ppm; STEL 5 ppm; Group I PesticideACGIH: 2 ppm; STEL 5 ppm(1 ppm = mg/m3 @ NTP)PROPERTIES:gas; vapor density (air = 1); BP -10 C; MP C;nonflammable SYNONYMS:noneSAMPLINGSAMPLER: FILTER + TREATED FILTER (cellulose + Na2CO3; preceded m cellulose ester membrane)FLOW to L/minVOL-MIN:4 L @ 5 ppm -MAX:200 LSHIPMENT:routineSAMPLE STABILITY:not determinedFIELD BLANKS:2 to 10 field blanks per setMEASUREMENTTECHNIQUE:ION CHROMATOGRAPHYANALYTE: sulfite and sulfate ionsEXTRACTION: 10 mL mM NaHCO3 mM Na2CO3 INJECTION LOOP VOLUME: 50 mM NaHCO3 mM Na2CO3,2 to 3 mL/minCOLUMNS: Ion Pac AS4A separator, Ion Pac AG4 Aguard; micromembrane suppressor [2]CONDUCTIVITY SETTING:10 S full scaleCALIBRATION: standard solutions of SO32 - and SO42 -in eluentRANGE: 11 to 200 g SO2 per sampleESTIMATED LOD: 3 g SO2 per sample [2]PRECISION (S r) [2]ACCURACYRANGE STUDIED:not studiedBIAS: not determinedOVERALL PRECISION (S rT):not determinedACCURACY:not determi
SULFUR DIOXIDE: METHOD 6004, Issue 2, dated 15 August 1994 - Page 3 of 4 NOTE: The SO 2 collected on the treated (back) filter is present as sulfite, which oxidizes in air slowly (over several weeks) to sulfate. The contributions of sulfite and sulfate found on the
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