ASTM D7922-14
Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography
- Standard No.
- ASTM D7922-14
- Release Date
- 2014
- Published By
- American Society for Testing and Materials (ASTM)
- Status
- Replace By
- ASTM D7922-21
- Latest
- ASTM D7922-23
- Scope
5.1 Some glycol/antifreeze dilution of in-service engine oil is normal under typical operating conditions. However, excessive glycol dilution can lead to decreased performance, premature wear, or sudden engine failure. This test method provides a means of quantifying the level of glycol based antifreeze dilution, allowing the user to take necessary action.
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 10008201;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.
ASTM D7922-14 Referenced Document
- ASTM D4291 Standard Test Method for Trace Ethylene Glycol in Used Engine Oil
- ASTM E1510 Standard Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
- ASTM E355 Standard Practice for Gas Chromatography Terms and Relationships*， 2024-04-20 Update
- ASTM E594 Standard Practice for Testing Flame Ionization Detectors Used in Gas or Supercritical Fluid Chromatography
ASTM D7922-14 history
- 2023 ASTM D7922-23 Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography
- 2021 ASTM D7922-21 Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography
- 2014 ASTM D7922-14 Standard Test Method for Determination of Glycol for In-Service Engine Oils by Gas Chromatography
