This standard specifies the test method for determination of dissolved residues content in liquefied petroleum gas (LPG); the determination range is 40~100mg/kg and may be controlled through adjusting the sample quantity if the residues content is higher.
Note: residues with content beyond the range of 40~100mg/kg may be determined through this standard, but the precision beyond the residues content range of 20~100mg/kg is not inspected and its applicability is not verified.
Determination of dissolved residues refers to volatilize the sample under environmental temperature and dry at 105℃ and then inspect with gas chromatography.
This standard is not applicable to the determination of solid sample and high molecular polymer (>1000g/mol).
2 Normative References
The following documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
SH/T 0233 Sampling Method of Liquefied Petroleum Gas
3 Terms and Definitions
For the purposes of this document, the following term and definition applies.
3.1
Liquefied petroleum gases; LPG
The petroleum gas which can be stored and treated in liquid form under appropriate pressure and environmental temperature; its main component is propane, butane and a small amount of propylene, butylene, pentane and (or) pentene.
