CARBON BLACK C
MW: 12.01 METHOD: 5100, Issue 1
5100
CAS: 1333-86-4 EVALUATION: FULL
OSHA: 3.5 mg/m3[1] NIOSH: 3.5 mg/m3 (in presence of PAHs: carcinogen/PAHs to 0.1 mg/m3, cyclohexane extractable fraction) [2] For other OELs and guidelines: See references [3,4]
RTECS: FF5800000 Issue 1: 30 April 2015
PROPERTIES: Solid; may contain polynuclear aromatic hydrocarbons (PAHs)
SYNONYMS: Acetylene black; amorphous carbon; furnace black; lamp black SAMPLING SAMPLER: INTERNAL CAPSULE, (tared 37-mm, 2- to 5-µm PVC filter melded to PVC housing) in 37-mm 2-piece cassette FLOW RATE: 1 to 2 L/min VOL-MIN: -MAX:
75 L @ 3.5 mg/m3 1400 L @ 3.5 mg/m3
MEASUREMENT TECHNIQUE:
GRAVIMETRIC (INTERNAL CAPSULE WEIGHT)
ANALYTE:
Carbon black
BALANCE:
0.001 mg sensitivity; use same balance before and after sample collection
CALIBRATION:
National Institute of Standards and Technology (NIST), Class S-1.1 weights or ASTM Class 1 weights
RANGE:
0.25 to 5 mg per sample
ESTIMATED LOD:
0.075 mg per sample
SHIPMENT: Routine SAMPLE STABILITY: 28 days minimum BLANKS:
Minimum of 2 field blanks per batch ACCURACY
RANGE STUDIED:
0.1 to 4 mg/sample
BIAS:
0.058 [5]
OVERALL PRECISION (ŜrT):
0.059 [5]
ACCURACY:
± 15.5%
PRECISION ( Sr ): 0.031 at 2 mg per sample [5]
APPLICABILITY: The working range is 1.5 to 25 mg/m3 for a 200-L air sample. This method is not applicable for the determination of “cyclohexane-solubles” [3]. The method is nonspecific; information on any other particulate materials that may be present should be assessed. INTERFERENCES: Moisture and static electricity can affect gravimetric measurements. Humidity control and minimization of static effects are addressed in this procedure. The presence of co-sampled airborne particulate material is a positive interference since this is a gravimetric method. OTHER METHODS: This method is preferred over Method 5000, Issue 2 [6], and is similar to Method 0501 for particulates not otherwise regulated [8]. OSHA method PV2121 describes a similar procedure (but for respirable sampling) using an alternative sampler design [9].
NIOSH Manual of Analytical Methods (NMAM), Fifth Edition
