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, , , : ISO 22000:2007 [4], Ӗ ISOTS 22003:2009 [5], - ISOTS 22004:2005 [6], ISO 22005:2009 [7], ISOIEC 17021:2008 [8] 4161-2003 [9].

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8. . , (ISO/IEC 17021:2006, IDT): ISO/IEC 17021-1:2008. 01.09.2008.-.: , 2008 30. ( ).

9. . : 4161 2003. 01.07.2003.-.: , 2003 13. ( ).

10. , 25.08.2004 185-23.

   

V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine; Kyiv, Lubricants are widely used in up-to-date technology for lowering friction in movable mechanisms of engines, bearings, gears and so on. There is a problem to examine their quality in the course of production, operation and determining the wear rate of mechanisms where these lubricants were used. Thus, there arises the task of simultaneous determining both the condition of motor oil and degree of car engine wear, with high sensitivity and productivity.

Optical measurements based on surface plasmon resonance (SPR) widely use for the chemical and biological analysis. The respective diagnostic facilities possess high sensitivity to very low concentrations (0.01 2 pg/ml) of studied substances and high precision of measurements [1]. It enables to apply them as precise analytical devices in lab investigations for food, chemical and pharmaceutical industries, in agriculture, medicine and ecology.

The analysis of references and our researches showed that, during the process of motor oil operation, there takes place growth of its optical density, which is first of all related with its oxidation in the consequence of its contact with aggressive media and effect of thermal shocks [2, 3]. Changes in the optical density can be also caused by embedding the wear debris into its composition from the mechanism where it operates. With account of absence of respective data in literature, we set a task to study the kinetics of changes in the motor oil refractive index by using the SPR method [4, 5]. The purpose of our work was to show the possibility to examine quality of motor oil by using the SPR method for comparing values of refractive indexes inherent to fresh and used oil.

The result of the carried-out researches, it was offered to use measurements not only comparing values of refractive indexes inherent to fresh and used oil, but also kinetic of they changes in time. Also we proposed to use motor oil solution to enhancing sensitivity, selectivity and decreasing time of measurements.

The usage motor oil solution allows to increase sensitivity and selectivity measurements of studied substances in 3 times and to observe also nature of proceeding reactions for define wear debris in used motor oil.

References:

1. High-sensitive SPR sensing with Indium Nitride as a dielectric overlay of optical fibers / [O.

Esteban, F.B. Naranjo, N. Daz-Herrera .]., 2011. 372-376 c. (Sensors and Actuators, B Chemie. Vol.158.)

2. Peric R. Sreten. Results of experimental research of the tribological characteristics of oils from engines and power transmitters of vehicles / Peric R. Sreten., 2011. 134-157 c. (Military technical courier. Vol.LIX., No.4.).

3. .. / . . ., 2011. 184-186 c. - ( , 46.).

4. .. / .., .., 2013. 154-156 c. (21 .).

5. Dorozinsky G. Surface plasmon resonance as a tool for research in nanotechnology and industry.

/ Dorozinsky G., 2013. 51-54 c. (Machines.Technologies.Materials Journal. Vol.9).

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3. ISO Guide 34 - GMP/GLP - ISO 9001 - ISO/IEC 17025 - ISO/IEC 17043

4. 7174:2010 . . : , 2011. 12 c.

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