ASTM D3606-21

1.1''This test method covers the determination of benzene and toluene in finished motor and aviation spark ignition fuels by gas chromatography. This test method has two procedures: Procedure A uses capillary column gas chromatography and Procedure B uses packed column gas chromatography. Procedures A and B have separate precisions.

1.2''The method working range for benzene is in the expected concentrations of: (1) Procedure A between 0.12'''% and 5.2'''% by volume and (2) Procedure B between 0.10'''% and 5.0'''% by volume.

1.3''The method working range for toluene is in the expected concentrations of: (1) Procedure A between 0.4'''% and 19.7'''% by volume, and (2) Procedure B between 2.0'''% and 20.0'''% by volume.

1.4''For benzene by Procedure A, the following oxygenated fuels are included in the working range: (1) ethanol up to 20'''% by volume (E20); (2) methanol up to 10'''% by volume (M10). Fuels M85 and E85 were excluded.

1.5''For benzene by Procedure B the following oxygenated fuels are included in the working range: (1) ethanol up to 20'''% by volume (E20); (2) methanol up to 10'''% by volume (M10). Fuels M85 and E85 were excluded.

1.6''For toluene by Procedure A the following oxygenated fuels were included in the working range: (1) ethanol up to 20'''% by volume (E20); (2) M85 and E85.

1.7''For toluene by Procedure B the following oxygenated fuels are included in the working range: (1) ethanol up to 20'''% by volume (E20); (2) M85 and E85.

1.8''Procedure A uses MIBK as the internal standard. Procedure B uses sec-butanol as the internal standard. The use of Procedure B for fuels containing blended butanols requires that sec-butanol be below the detection limit in the fuels as sec-butanol is an internal standard. For Procedure B, an alternative separation column set described in the annex (A2.3, Annex Approach B) uses MEK as the internal standard when butanols may be blended into gasolines.

1.9''This test method includes a relative bias section for benzene reporting based on Practice D6708 bias assessment between Test Method D3606 Procedure B and Test Method D5769. It is intended to allow Test Method D3606 Procedure B to be used as a possible alternative to Test Method D5769. The Practice D6708 derived benzene correlation equation is applicable for benzene measurements in the range from 0.04'''% to 2.88'''% by volume as reported by Test Method D3606 Procedure B. The correlation complies with EPA'''s Performance Based Measurement System (PBMS).

1.10''Correlation equations are included in the relative bias section 13.2.1

Product Details

Published:

10/01/2021

Number of Pages:

28

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1 file , 1.1 MB

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2 files , 2.9 MB

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Document History

ASTM D3606-22

ASTM D3606-21

ASTM D3606-20e1

ASTM D3606-20

ASTM D3606-10e1

ASTM D3606-10

ASTM D3606-06e1

ASTM D3606-04a

ASTM D3606-04

ASTM D3606-99