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dc.contributor.authorMarume, Cathrine-
dc.contributor.authorKumar, Bhajanthri Natesh-
dc.contributor.authorRedhi, Gan G.-
dc.identifier.citationMarume, C., Bhajanthri, N.K. and Redhi, G.G. 2016. Analysis of Lubricating Grease by ICP-OES: A Case Study on Preparation Methodology. Asian Journal of Chemistry. 28(5): 1049-1053.en_US
dc.identifier.issn0975-427X (Online)-
dc.identifier.issn0970-7077 (Print)-
dc.description.abstractThe aim of this study was to develop simple, cost effective and reliable sample preparation methods for the analysis of lubricating grease samples. Direct dilution, microwave digestion and emulsification methods were designed and compared for the analysis of Ca, B, Al, Na, Mo, Zn and Ba with inductively coupled plasma optical emission spectroscopy (ICP-OES). The direct dilution method gave most inconsistent results in terms of percentage recovery. The optimized microwave digestion and emulsification methods compared well and showed good reliability in terms of sensitivity and selectivity. The calibration curves resulting from oil emulsion has no significant difference with that of aqueous emulsions, but the stability of the emulsified samples was very low. The limit of detection and limit of quantification values obtained from the microwave digestion method were very low and therefore it is superior amongst the three methods for the analysis of various lubricating grease samples.en_US
dc.format.extent6 pen_US
dc.publisherAsian Publication Corporationen_US
dc.subjectLubricating greaseen_US
dc.subjectMulti-elemental determinationen_US
dc.subjectEmulsification methoden_US
dc.titleAnalysis of lubricating grease by ICP-OES : a case study on preparation methodologyen_US
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