Full Description

1.1This test method covers the gas chromatographic procedure for the quantitative determination of organic oxygenates in C2, C3, C4, and C5 matrices by multidimensional gas chromatography and flame ionization detection. This test method is applicable when the hydrocarbon matrices have a final boiling point not greater than 200C. Oxygenate compounds include, but are not limited to, those listed in Table 1. The linear working range for oxygenates is 0.50 mg/kg to 100 mg/kg.

Components

Retention Time (min)

Dimethyl ether

6.18

Diethyl ether

8.44

Acetaldehyde

8.89

Ethyl tert-butyl ether

10.66

Methyl tert-butyl ether (MTBE)

10.92

Diisopropyl ether

11.22

Propionaldehyde (Propanal)

12.00

Tertiary amyl methyl ether (TAME)

13.19

Propyl ether

14.00

Isobutylaldehyde

14.10

Butylaldehyde

14.50

Methanol

14.91

Acetone

15.39

Isovaleraldehyde

16.00

Valeraldehyde

16.10

2-Butanone (MEK)

17.14

Ethanol

17.51

N-propyl alcohol and isopropanol

19.20 (co-elution)

Allyl Alcohol

20.00

Isobutanol, Tert-butyl alcohol, Sec-Butanol

20.24 (co-elution)

N-butanol

20.84

1.2This test method is intended to determine the mass concentration of each oxygenate in the hydrocarbon matrix. Oxygenate compound identification is determined by reference standards and column elution retention order.

1.3The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Product Details

Published: 05/01/2014 Number of Pages: 8File Size: 1 file , 210 KB