Page:NIOSH Manual of Analytical Methods - 5021.pdf/1

 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