Page:NIOSH Manual of Analytical Methods - 1610.pdf/1

 ETHYL ETHER MW: 74.14

(C2 H5 )2 O METHOD: 1610, Issue 3

1610

CAS: 60-29-7

RTECS: KI5775000

EVALUATION: FULL

Issue 1: 15 May 1985 Issue 3: 15 March 2003

PROPERTIES: liquid; d 0.7134 g/mL @ 20 o C; BP 34.6 o C; MP - 116 o C; VP 59 kPa (440 mm Hg; 58% v/v) @ 20 o C; explosive range 1.7 to 48% v/v in air

OSHA : 400 ppm NIOSH: no REL ACGIH: 400 ppm; STEL 500 ppm (1 ppm = 3.03 mg/m3 @ NTP)

SYNONYMS: diethyl ether; 1,1'-oxybisethane; ethyl oxide

SAMPLING SAMPLER:

Solid Sorbent Tube (coconut shell charcoal, 100 mg/50 mg)

MEASUREMENT TECHNIQUE:

GAS CHROMOTOGRAPHY, FID

ANALYTE:

ethyl ether

DESORPTION:

1.0 mL CS2 ; 30 min with agitation

INJECTION VOLUME:

1 µL

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

0.25 L @ 400 ppm 3L

SHIPMENT:

routine

SAMPLE STABILITY:

14 days @ 5 o C

BLANKS:

2 to 10 field blanks per set

ACCURACY RANGE STUDIED:

606 to 2400 mg/m3 (3-L samples)[2]

BIAS:

5.2%

OVERALL PRECISION (Ö r T ):

0.088

ACCURACY:

+ 20%

TEMPERATURE: -INJECTION: 250 o C -DETECTOR: 300 o C -COLUMN: 35 o C (1 min) - 150 o C @ 10 o C/minute, (split 5:1) CARRIER GAS:

helium (1-2 mL/min)

COLUMN:

capillary, fused silica 30 m x 0.32-mm ID; 1-:m film 100% dimethyl polysiloxane, Rtx-1 or equivalent

CALIBRATION:

solutions of ethyl ether in CS 2

RANGE:

2 to 430 µg per sample (capillary column); 1800 to 7100 µg per sample (packed column)

ESTIMATED LOD: 0.2 µg per sample PRECISION ( þ r ):

0.071 @ 9 to 400 µg per sample

APPLICABILITY: The working range is 100 to 2700 mg/m3 (33 to 880 ppm) for a 3-L air sample. During sampling, high humidity may greatly decrease the breakthrough volume. A sampling period of 15 min may be monitored for STEL compliance using a flow rate of 0.2 L/min.[3]

INTERFERENCES: Any compound, such as pentane, with similar retention times.

OTHER METHODS: This revises Method S80 [4] and NMAM 1610 (issue 2) [4].

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition