Transcription of FORMALDEHYDE 2016
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FORMALDEHYDE 2016
NIOSH Manual of Analytical Methods (NMAM), Fourth EditionFORMALDEHYDE2016H2C= : 50-00-0 RTECS: LP8925000 METHOD:2016, Issue 2 EVALUATION: FULLI ssue 1: 15 January 1998 Issue 2: 15 March 2003 OSHA : ppm; 2 ppm STELNIOSH: ppm; C ppm; carcinogenACGIH: C ppm; suspected human carcinogen(1 ppm = mg/m3 @ NTP)PROPERTIES:Gas; BP oC; specific gravity (air = 1); explosive range 7 to 73% (v/v) inairNAMES & SYNONYMS:methanal; formalin (aqueous 30 to 60% w/v FORMALDEHYDE ); methylene oxideSAMPLINGMEASUREMENTSAMPLER:CARTRIDG E(Cartridge containing silica gel coated with2,4-dinitrophenylhydrazine)FLOW to L/minVOL-MIN:1 L @ mg/m3 -MAX:15 L @ mg/m3 SHIPMENT:Place caps onto cartridge. Ship on STABILITY:34 days @ 5 C [1]BLANKS:2 to 10 field blanks per set6 to 10 media blanks per setTECHNIQUE:HPLC, UV DETECTIONANALYTE:2,4-dinitrophenylhydraz one offormaldehydeEXTRACTION:Elution with 10 mL of carbonyl-freeacetonitrileINJECTION VOLUME:20 LMOBILE PHASE:45% acetonitrile/55% water (v/v), mL/ x 150-mm, stainless steel, packedwith 5- m C-18, SymmetryTM orequivalentDETECTOR:UV @ 360 nmCALIBRATION:Samplers fortified with standard solutionsof FORMALDEHYDE in to 37 g per sample [1,2]ESTIMATED g/sample [1]PRECISION ( r) @ to g/sample [1]ACCURACYRANGE to mg/m3 (22-L samples) [2]BIAS:+ ( rT) [1,2]ACCURACY: : The working range is
SA MPLI NG: 1. Calibrate each personal sampling pump with a representative sampler (and ozone scrubber, if used) in line. 2. Open sam pler packet and remove end caps. 3. Attach sampler to the sampli ng pump with f lexible tubing. The W aters sampler i s bi-directional and can be connected at either end.
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