Page:NIOSH Manual of Analytical Methods - 3701.pdf/1

 TRICHLOROETHYLENE by portable GC

Cl2C=CHCl

MW: 131.39

METHOD: 3701, Issue 2

CAS: 79-01-6

RTECS: KX4550000

EVALUATION: FULL

OSHA : 100 ppm; C 200 ppm; P 300 ppm NIOSH: 25 ppm; C 2 ppm/1 h; carcinogen ACGIH: 50 ppm; 200 ppm STEL; suspect carcinogen (1 ppm = 5.37 mg/m 3 @ NTP)

PROPERTIES:

3701

Issue 1: 15 August 1987 Issue 2: 15 August 1994

liquid; d 1.46 g/mL @ 20 °C; BP 87 °C; MP -86 °C; VP 7.7 kPa (58 mm Hg; 7.6% v/v) @ 20 °C; explosive range 11 to 41% v/v in air

SYNONYMS: trichloroethene; ethylene trichloride; triclene

SAMPLING SAMPLER:

AIR BAG (Tedlar)

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY (PORTABLE), PHOTOIONIZATION DETECTOR

ANALYTE:

trichloroethylene (TCE)

CALIBRATION:

bag standards or calibrated gas mixtures

RANGE:

10 to 1000 ppm

FLOW RATE: 0.02 to 0.05 L/min or higher; fill bag to ≤80% of capacity; spot samples possible (step 2.1.) SAMPLE STABILITY:

BLANKS:

bags should be analyzed as soon after collection as possible ( ≤4 h) clean air, either in bag or from a non-work area

ESTIMATED LOD: 0.25 ng per injection (0.1 ppm for a 1-mL injection PRECISION (Sr):

0.078

ACCURACY RANGE STUDIED:

25 to 100 ppm

BIAS:

not determined

ˆ ): 0.078 OVERALL PRECISION (S rT ACCURACY:

> ± 15%

APPLICABILITY: The working range is 10 to 1000 ppm (54 to 5400 mg/m 3) in relatively non-complex atmospheres where trichloroethylene is known to be present (see EVALUATION OF METHOD).

INTERFERENCES: None found.

OTHER METHODS: Method 1022 [1] uses activated charcoal sampler tubes.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94