Page:NIOSH Manual of Analytical Methods - 3513.pdf/1

 TETRANITROMETHANE

C(NO2)4

MW: 196.0

METHOD: 3513, Issue 1

CAS: 509-14-8

3513

RTECS: PB4025000

EVALUATION: FULL

OSHA : 1 ppm NIOSH: 1 ppm ACGIH: 1 ppm (1 ppm = 8.02 mg/m 3)

PROPERTIES:

Issue 1: 15 August 1994

colorless liquid, pungent odor; BP = 125.7 °C; MP = 12.5 °C; sp. gravity = 1.650 (13 °C)

SYNONYMS: TNM; Tetan

SAMPLING SAMPLER:

IMPINGER (ethyl acetate, 15 mL)

FLOW RATE:

0.5 to 1.0 L/min

VOL-MIN: -MAX:

20 L @ 1 ppm 250 L

SHIPMENT:

refrigeration recommended

SAMPLE STABILITY:

14 days refrigerated

BLANKS:

2 to 10 field blanks per set

ACCURACY

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, NPD

ANALYTE:

tetranitromethane

DILUTION:

ethyl acetate

INJECTION VOLUME:

1 µL

TEMPERATURE-INJECTOR: -DETECTOR: -COLUMN:

160 °C 200 °C 40 °C

COLUMN:

30 m, 0.32-mm ID, 1-µm film thickness DB-1 capillary column [2]

CALIBRATION:

solutions of tetranitromethane in ethyl acetate

RANGE:

17 to 660 µg per sample

RANGE STUDIED:

2.70 to 11.5 mg/m 3 [1] (250-L sample)

ESTIMATED LOD:

5 µg per sample [2]

BIAS:

0%

PRECISION (Sr):

0.011 [2]

ˆ ): 0.076 [1] OVERALL PRECISION (S rT ACCURACY:

± 21.7%

APPLICABILITY: The working range is 0.02 to 2.5 ppm (0.2 to 20 mg/m 3) for a 100-L air sample. A flame ionization detector can be used but has less sensitivity. A Stabilwax-DB capillary column can be used as an alternate to a DB-1 capillary co lumn [2].

INTERFERENCES: Any nitrogen or phosphorus compound with a similar retention time as tetranitromethane.

OTHER METHODS: This method revises and modifies S224 [1].

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94