ASTM D7922 - 14 - Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography

ASTM D7922 - 14

Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography

Status : Current   Published : July 2014

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1.1 This test method covers the determination of glycol based antifreeze for in-service engine oil by derivative headspace/gas chromatography.

1.2 Sample is derivatized in-situ directly in a headspace sampling vial prior to vapor phase extraction and injection into a gas chromatograph.

1.3 The chemistry of the derivatization is unique to the detection of the molecules of ethylene glycol and 1,2-propylene glycol. 1,3-propylene glycol could also be detected but is not used in any known anti-freeze at this time. Other coolant analyses are beyond the scope of this test method.

1.4 The derivatization process does not affect glycol breakdown products such as glycolate and formate and hence the presence of these compounds in the oil will not be quantified.

1.5 The test method concentration range is from 50 µg/g to 1000 µg/g. Lower levels are possible by method modifications. Higher levels are possible through sample dilution.

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

1.7  This 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.




Standard NumberASTM D7922 - 14
TitleStandard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography
StatusCurrent
Publication Date15 July 2014
Normative References(Required to achieve compliance to this standard)No other standards are normatively referenced
Informative References(Provided for Information)No other standards are informatively referenced
Descriptors Antifreeze, Ethylene glycol, Gas chromatography, Glycol, Headspace, In-service oil, Lubricating oil
ICS75.160.20
PublisherASTM
FormatA4
DeliveryYes
Pages7
File Size162 KB
Price£40.00


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