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Diesel engine coolant analysis, new application for established instrumentation

Abstract

Rotating disk electrode (RDE) arc emission spectrometers are user` many commercial, industrial and military laboratories throughout the world to analyze millions of oil and fuel samples each year. In fact, RDE spectrometers have been used exclusively for oil and fuel analysis for so long that it has nearly been forgotten by most practitioners that when RDE spectrometers were first introduced more than 40 years ago, they were routinely used for aqueous samples as well. This presentation reviews early methods of aqueous sample analysis using RDE technology. This presentation also describes recent work to calibrate an RDE spectrometer for both water samples and for engine coolant samples which are a mixture of approximately 50 % water and 50 % ethylene or propylene glycol. Limits of detection determined for aqueous standards are comparable to limits of detection for oil standards. Repeatability of aqueous samples is comparable to the repeatability achieved for oil samples. A comparison of results for coolant samples measured by both inductively coupled plasma (ICP) and rotating disk electrode (RDE) spectrometers is presented. Not surprisingly, RDE results are significantly higher for samples containing particles larger than a few micrometers. Although limits of detection for aqueous samples are not as low  More>>
Authors:
Anderson, D P; Lukas, M; Lynch, B K [1] 
  1. Spectro Incorporated, Littleton, MA (United States)
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
VTT-SYMP-171(v.1); CONF-9706228-
Reference Number:
SCA: 330102; 400102; PA: FI-97:003804; EDB-98:073989; SN: 98001889789
Resource Relation:
Conference: 10. international congress and exhibition on condition monitoring and diagnostic engineering management, Espoo (Finland), 9-11 Jun 1997; Other Information: PBD: 1997; Related Information: Is Part Of COMADEM `97; Jantunen, E.; Holmberg, K. [RTB Van Heugten, Nijmegen (Netherlands)] Rao, R.B.K.N. [PME Adviesbureau, Zeist (Netherlands)]; PB: 554 p.
Subject:
33 ADVANCED PROPULSION SYSTEMS; 40 CHEMISTRY; DIESEL ENGINES; COOLANTS; EMISSION SPECTROSCOPY; SPECTROMETERS; GLYCOLS; IMPURITIES; TRACE AMOUNTS; AQUEOUS SOLUTIONS
OSTI ID:
626272
Research Organizations:
Technical Research Centre of Finland, Espoo (Finland)
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE98718976; ISBN 951-38-4562-1; TRN: FI9703804
Availability:
OSTI as DE98718976
Submitting Site:
FI
Size:
pp. 213-222
Announcement Date:

Citation Formats

Anderson, D P, Lukas, M, and Lynch, B K. Diesel engine coolant analysis, new application for established instrumentation. Finland: N. p., 1997. Web.
Anderson, D P, Lukas, M, & Lynch, B K. Diesel engine coolant analysis, new application for established instrumentation. Finland.
Anderson, D P, Lukas, M, and Lynch, B K. 1997. "Diesel engine coolant analysis, new application for established instrumentation." Finland.
@misc{etde_626272,
title = {Diesel engine coolant analysis, new application for established instrumentation}
author = {Anderson, D P, Lukas, M, and Lynch, B K}
abstractNote = {Rotating disk electrode (RDE) arc emission spectrometers are user` many commercial, industrial and military laboratories throughout the world to analyze millions of oil and fuel samples each year. In fact, RDE spectrometers have been used exclusively for oil and fuel analysis for so long that it has nearly been forgotten by most practitioners that when RDE spectrometers were first introduced more than 40 years ago, they were routinely used for aqueous samples as well. This presentation reviews early methods of aqueous sample analysis using RDE technology. This presentation also describes recent work to calibrate an RDE spectrometer for both water samples and for engine coolant samples which are a mixture of approximately 50 % water and 50 % ethylene or propylene glycol. Limits of detection determined for aqueous standards are comparable to limits of detection for oil standards. Repeatability of aqueous samples is comparable to the repeatability achieved for oil samples. A comparison of results for coolant samples measured by both inductively coupled plasma (ICP) and rotating disk electrode (RDE) spectrometers is presented. Not surprisingly, RDE results are significantly higher for samples containing particles larger than a few micrometers. Although limits of detection for aqueous samples are not as low as can be achieved using the more modern ICP spectrometric method or the more cumbersome atomic absorption (AA) method, this presentation suggests that RDE spectrometers may be appropriate for certain types of aqueous samples in situations where the more sensitive ICP or AA spectrometers and the laboratory environment and skilled personnel needed for them to operate are not conveniently available. (orig.) 4 refs.}
place = {Finland}
year = {1997}
month = {Dec}
}