CARBON BLACK
C
MW: 12.01
CAS: 1333-86-4
METHOD: 5000, Issue 2
5000
RTECS: FF5800000
EVALUATION: FULL
OSHA : 3.5 mg/m 3 NIOSH: 3.5 mg/m 3 (in presence of PAHs: carcinogen/PAHs to 0.1 mg/m 3, cyclohexane extractable fraction) ACGIH: 3.5 mg/m 3
PROPERTIES:
Issue 1: 15 May 1989 Issue 2: 15 August 1994
solid; may contain polynuclear aromatic hydrocarbons (PAH)
SYNONYMS: acetylene black; amorphous carbon; furnace black; lamp black
SAMPLING SAMPLER:
FILTER (tared 5-µm PVC membrane)
FLOW RATE:
1 to 2 L/min
VOL-MIN: -MAX:
30 L @ 3.5 mg/m 3 570 L
SHIPMENT:
routine
SAMPLE STABILITY:
indefinitely
BLANKS:
2 to 10 field blanks per set
MEASUREMENT TECHNIQUE:
GRAVIMETRIC (FILTER WEIGHT)
ANALYTE:
airborne particulate material
BALANCE:
0.001 mg sensitivity; use same balance before and after sample collection
CALIBRATION:
National Institute of Standards and Technology, Class S-1.1 weights or ASTM Class 1 weights
RANGE:
0.1 to 2 mg per sample
ESTIMATED LOD:
0.03 mg per sample
PRECISION (Sr):
0.025 @ 3.5 mg/m 3 [1, 2]
ACCURACY RANGE STUDIED:
2 to 8 mg/m 3 (100-L samples)
BIAS:
0.01%
ˆ ): 0.056 [1] OVERALL PRECISION (S rT ACCURACY:
± 11.0%
APPLICABILITY: The working range is 0.5 to 10 mg/m 3 for a 200-L air sample. This method is not applicable for the determination of "cyclohexane-solubles" [3]. This analysis is simple but the method is nonspecific. Information on any o ther particulate materials present should be assessed. The method may be extended to higher air concentrations (e.g., nuisanc e dust levels) by collecting a smaller sample volume [4].
INTERFERENCES: The presence of any other particulate material in the air being sampled will be a positive interference since this is a gravimetric method.
OTHER METHODS: This is Method S262 [5] in a revised format. It is similar, except for collecting device, to the method described in the carbon black criteria document [3].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
