Page:NIOSH Manual of Analytical Methods - 2005.pdf/1

 NITROAROMATIC COMPOUNDS (1) Nitrobenzene: C6H5NO2 MW: (1) 123.11 (2) o-Nitrotoluene: CH3C6H4NO2 (2) 137.14 m-Nitrotoluene: p-Nitrotoluene: (3) 4-Chloronitrobenzene: C6H4ClNO2 (3) 157.56 METHOD: 2005, Issue 3

OSHA : NIOSH: ACGIH:

SYNONYMS:

CAS: (1) 98-95-3 RTECS: (1) DA6475000 (2) 88-72-2 (2) XT3150000 99-08-1 XT2975000 99-99-0 XT3325000 (3) 100-00-5 (3) CZ1050000

EVALUATION: Table 1

Table 1 Table 1 Table 1

2005

PROPERTIES:

Issue 1: 15 August 1990 Issue 3: 15 January 1998

Table 1

(1) Nitrobenzol, oil of mirbane (2) o- Methylnitrobenzene, 2-Methylnitrobenzene, 2-Nitrotoluene m-Methylnitrobenzene, 3-Methylnitrobenzene, 3-Nitrotoluene p-Methylnitrobenzene, 4-Methylnitrobenzene, 4-Nitrotoluene (3) p-Chloronitrobenzene, 1-Chloro-4-nitrobenzene, 4-Nitrochlorobenzene, PCNB, PNCB

SAMPLING

MEASUREMENT

SAMPLER:

SOLID SORBENT TUBE (Silica gel, 150 mg/75 mg)

FLOW RATE:

(1) and (3): 0.01 to 1 L/min; (2) 0.01 to 0.02 L/min

TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

nitrobenzene, nitrotoluene isomers, 4-chloronitrobenzene

DESORPTION: VOL-MIN: -MAX:

(1) 10 L 150 L

(2) 1L 30 L

(3) 1L 150 L

SHIPMENT:

Routine

SAMPLE STABILITY:

30 days @ 5 C

BLANKS:

2 to 10 field blanks per set

INJECTION VOLUME:

1 mL methanol in ultrasonic bath for 30 minutes 1 µL 250 C 300 C 80 C, 1 min; 8 C/min to 180 C He, 2.5 to 3.0 mL/min

TEMPERATURE -INJECTION: -DETECTOR: -COLUMN: CARRIER GAS: COLUMN:

capillary, 30 m x 0.53-mm ID; µm film crossbonded 5% diphenyl 95% dimethylpolysiloxane, Rtx®-5 Amine or equivalent

ACCURACY RANGE STUDIED:

Table 1

CALIBRATION:

analytes in methanol

BIAS:

Table 1

RANGE:

Table 1

OVERALL PRECISION ( ACCURACY:

rT

): Table 1 Table 1

ESTIMATED LOD: Table 1 PRECISION ( r): Table 1

APPLICABILITY: The working ranges for a 30-L air samples are 0.396 to 1.92 ppm (1.98 to 9.60 mg/m3) for nitrobenzene; 0.346 to 1.73 ppm (1.97 to 9.86 mg/m3) for o-nitrotoluene; 0.344 to 1.72 ppm (1.96 to 9.81 mg/m3) for m-nitrotoluene; 0.303 to 1.52 ppm (1.73 to 8.67 mg/m3) for p-nitrotoluene; and 0.308 to 1.54 ppm (1.98 to 9.92 mg/m3) for 4-chloronitrobenzene [1,2]. INTERFERENCES: Any compounds with retention times similar to the analytes of interest will interfere. During sampling, high humidity may greatly decrease breakthrough volume. OTHER METHODS:This method is an update of NMAM 2005, Nitrobenzenes, issued 15 August 1994, which combined and replaced methods S217, S218, and S223 [2,3].

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition