ASTM D2650 - 10(2021) Standard Test Method for Chemical Composition of Gases by Mass Spectrometry

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ASTM D2650 - 10(2021)

Standard Test Method for Chemical Composition of Gases by Mass Spectrometry

Active Standard ASTM D2650 | Developed by Subcommittee: D02.04.0M

Book of Standards Volume: 05.01

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Significance and Use

5.1 A knowledge of the composition of refinery gases is useful in diagnosing the source of plant upsets, in determining the suitability of certain gas streams for use as fuel, or as feedstocks for polymerization and alkylation, and for monitoring the quality of commercial gases.

1. Scope

1.1 This test method covers the quantitative analysis of gases containing specific combinations of the following components: hydrogen; hydrocarbons with up to six carbon atoms per molecule; carbon monoxide; carbon dioxide; mercaptans with one or two carbon atoms per molecule; hydrogen sulfide; and air (nitrogen, oxygen, and argon). This test method cannot be used for the determination of constituents present in amounts less than 0.1 mole %. Dimethylbutanes are assumed absent unless specifically sought.

Note 1: Although experimental procedures described herein are uniform, calculation procedures vary with application. The following influences guide the selection of a particular calculation: qualitative mixture composition; minimum error due to components presumed absent; minimum cross interference between known components; maximum sensitivity to known components; low frequency and complexity of calibration; and type of computing machinery.

Because of these influences, a tabulation of calculation procedures recommended for stated applications is presented in Section 12 (Table 1).

Serial No. . . . . . . . . . .

Name or Application

Commercial
Propane

Commercial
Butane

BB Stream
(Cracked
Butanes)

Dry Gas
Cracked
Fuel Gas

Mixed Iso
and Normal
Butanes

Reformer
Make-Up
Gas

Unstabi-
lized Fuel
Gas

Component

O^C

P^C

O^C

P^C

Hydrogen

...

Methane

...

Ethylene^E

...

Ethane

...

Propene

...

Propane

Butadiene

...

Butene-1

...

Butene-2

...

Isobutene

1^F

...

Isobutane

n-Butane

...

Pentenes

...

Isopentane

...

n-Pentane

...

Benzene

...

Hexanes

...

C₆ cyclic paraffins

...

Hexanes

...

Toluene

...

Hydrogen sulfide

...

Carbon dioxide

...

Carbon monoxide

...

Nitrogen

...

D1137 Method for Analysis of Natural Gases and Related Types of Gaseous Mixtures by the Mass Spectrometer

D1265 Practice for Sampling Liquefied Petroleum (LP) Gases, Manual Method

D1302 Test Method for Analysis of Carbureted Water Gas by the Mass Spectrometer

Gas Producers Association Standards

GPA 2166 Obtaining Natural Gas Samples for Analysis by Gas Chromatography

ICS Code

ICS Number Code 71.040.40 (Chemical analysis)

UNSPSC Code

UNSPSC Code 15111500(Gaseous fuels)

Referencing This Standard

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DOI: 10.1520/D2650-10R21

Citation Format

ASTM D2650-10(2021), Standard Test Method for Chemical Composition of Gases by Mass Spectrometry, ASTM International, West Conshohocken, PA, 2021, www.astm.org