Page:NIOSH Manual of Analytical Methods - 2501.pdf/1

 ACROLEIN

H2C=CHCHO

MW : 56.07

METHOD: 2501, Issue 2

CAS: 107-02-8

2501

RTECS: AS1050000

EVALUATION: PARTIAL

OSHA : 0.1 ppm NIOSH: 0.1 ppm; STEL 0.3 ppm; Group I Pesticide ACGIH: 0.1 ppm, STEL 0.3 ppm (1 ppm = 2.29 mg/m 3 @ NTP)

PROPERTIES:

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

liquid; d 0.8389 g/mL @ 20 °C; BP 52.5 °C; MP -88 °C; VP 28.5 kPa (214 mm Hg; 28% v/v) @ 20 °C; explosive range 2.8 to 31% v/v in air

SYNONYMS: 2-propenal; acrylicaldehyde; acrylaldehyde; allylaldehyde.

SAMPLING SAMPLER:

SOLID SORBENT TUBE (2-(hydroxymethyl)piperidine on XAD-2, 120 mg/60 mg)

FLOW RATE:

0.01 to 0.1 L/min

VOL-MIN: -MAX:

13 L @ 0.1 ppm 48 L

SHIPMENT:

routine

SAMPLE STABILITY:

at least 4 weeks @ 25 °C [1]

BLANKS:

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, NITROGENSPECIFIC DETECTOR

ANALYTE:

9-vinyl-1-aza-8-oxabicyclo[4.3.0]nonane

DESORPTION:

2 mL toluene; ultrasonic bath for 30 min

INJECTION VOLUME: 1 µL TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

2 to 10 field blanks and 10 media blanks per set

CARRIER GAS:

Helium, 30 mL/min

COLUMN:

2 m x 2-mm glass, 5% SP-2401-DB on Supelcoport (100-120 mesh)

CALIBRATION:

acrolein spiked on coated sorbent

RANGE:

3 to 36 µg per sample

ACCURACY RANGE STUDIED:

0.12 to 1.50 mg/m 3 (24-L samples)

BIAS:

7.0%

ˆ ): 0.111 [1] OVERALL PRECISION (S rT ACCURACY:

± 29%

230 °C 250 °C 90 °C for 8 min; 20 °C/min; hold @ 200 °C for 11 min

ESTIMATED LOD: 2 µg per sample PRECISION (Sr):

not determined

APPLICABILITY: The working range is 0.05 to 0.2 ppm (0.13 to 0.5 mg/m 3) for a 24-L air sample. For STEL measurements, the limit of the method is 0.9 ppm for a 15-min sample at 0.1 L/min.

INTERFERENCES: None known. Peaks for acetaldehyde and formaldehyde oxazolidines may be observed in the chromatogram, but they are resolved from the acrolein peak. Capacity of the sampler is reduced if sampling in air containing acids [1].

OTHER METHODS: This method was developed to give improved sample stability and to provide for ease of personal sampling compared to P&CAM 118 [2] and P&CAM 211 [2], which have not been revised.

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