Page:NIOSH Manual of Analytical Methods - 1009.pdf/1

 VINYL BROMIDE

CH2=CHBr

MW: 106.95

METHOD: 1009, Issue 2

CAS: 593-60-2

1009

RTECS: KU8400000

EVALUATION: FULL

OSHA : 1 ppm; C 5 ppm NIOSH: suspect carcinogen; lowest feasible conc. (0.2 ppm LOQ) ACGIH: 5 ppm; suspect carcinogen (1 ppm = 4.37 mg/m 3 @ NTP)

Issue 1: 15 February 1984 Issue 2: 15 August 1994

PROPERTIES: d 1.493 g/mL @ 20 °C; BP 15.8 C; MP -137.8 °C; VP 141 kPa (1054 mm Hg) @ 20 °C; explosive range 9 to 15% v/v in air

SYNONYMS: bromoethene; bromoethylene.

SAMPLING SAMPLER:

MEASUREMENT

SOLID SORBENT TUBE (coconut shell charcoal, 400 mg/200 mg)

TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

vinyl bromide

DESORPTION:

15 mL ethanol, 30 min ultrasonic agitation

INJECTION VOLUME:

5 µL

FLOW RATE: 0.01 to 0.2 L/min VOL-MIN: -MAX:

2 L @ 1 ppm 10 L

SHIPMENT:

no special precautions

SAMPLE STABILITY:

at least 14 days @ 25 °C

BLANKS:

2 to 10 field blanks per set

TEMPERATURE-INJECTION: 140 C -DETECTOR: 240 C -PROGRAM: 3 min @ 50 C, 40 to 225 C, 5 min hold

ACCURACY

CARRIER GAS:

N 2, 25 mL/min

COLUMN:

nickel, 6 m x 2-mm ID, 10% FFAP on 80/100 mesh Chromosorb W AW DMCS

CALIBRATION:

vinyl bromide in ethanol

RANGE:

8 to 355 µg per sample

3

RANGE STUDIED:

1.32 to 56.5 mg/m [1] (6-L samples)

BIAS:

0.021 [2]

ˆ ): OVERALL PRECISION (S rT

0.090 (1.3 to 6.4 mg/m 3) [1]; 0.063 (6.4 to 56 mg/m 3)

ACCURACY:

C/min

± 17.1%

ESTIMATED LOD: 3 µg per sample PRECISION (Sr):

0.040 [1]

APPLICABILITY: The working range is 0.3 to 33 ppm (1.3 to 145 mg/m 3) for a 6-L air sample.

INTERFERENCES: Presence of other volatile compounds may interfere with collection of vinyl bromide or reduce capacity of sorbent tube. Under stated chromatographic conditions, ethylene, acetylene, and ethylene dibromide are separated from vi nyl bromide; bromine is not separated.

OTHER METHODS: This is Method P&CAM 349 [1] in a revised format. OSHA Method 08 uses a smaller (100 mg/50 mg coconut charcoal) sorbent tube and desorption by CS 2, recommends a 5-L sample, and was evaluated for a 1-ppm target level.

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