o-TERPHENYL
C18 H14
MW: 230.31
METHOD: 5021, Issue 2
CAS: 84-15-1
5021
RTECS: WZ6472000
EVALUATION: PARTIAL
OSHA : C 1 ppm (o-, m-, and p-isomers) NIOSH: C 0.5 ppm (o-, m-, and p-isomers) ACGIH: C 0.53 ppm ( o-, m-, and p-isomers) (1 ppm = 9.42 mg/m 3)
PROPERTIES:
Issue 1: 15 May 1985 Issue 2: 15 August 1994
solid; MP 58 °C; BP 332 °C; VP 0.035 Pa (0.00026 mm Hg; 0.35 ppm) @ 22 °C [1]
SYNONYMS: o-diphenyl benzene; o-triphenyl; 1,2-diphenyl benzene
SAMPLING SAMPLER:
FILTER (2.0 µm, PTFE)
FLOW RATE:
1 to 3 L/min
VOL-MIN: -MAX:
2L 30 L
SHIPMENT:
routine
MEASUREMENT TECHNIQUE:
GAS CHROMATOGRAPHY, FID
ANALYTE:
o-terphenyl
DESORPTION:
CS 2
INJECTION VOLUME:
5 µL
SAMPLE STABILITY:
not determined
TEMPERATURE-DETECTOR: -INJECTOR: -COLUMN:
230 °C 220 °C 185 °C
FIELD BLANKS:
2 to 10 field blanks per set
CARRIER:
N 2, 30 mL/min
COLUMN:
3 m x 3-mm OD stainless steel packed with 5% SE-30 on 80/100 mesh Gas Chrom W
CALIBRATION:
standard solutions of o-terphenyl in CS 2
RANGE:
0.015 to 0.5 mg per sample
ACCURACY RANGE STUDIED:
4.5 to 20 mg/m 3 [1] (15-L samples)
BIAS:
- 4.4%
OVERALL PRECISION :
0.097 [1]
ˆ rT): ACCURACY (S
± 20.0%
ESTIMATED LOD: 0.002 mg per sample PRECISION (Sr):
0.052 @ 0.07 to 0.27 mg per sample [1]
APPLICABILITY: The working range is 0.5 to 60 mg/m 3 for a 30-L air sample. The method has been tested only with o-terphenyl.
INTERFERENCES: None identified.
OTHER METHODS: This revised Method S27 [2].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
