| 简介 |
The present invention relates to a sample preprocessing method for analyzing the content of rare-earth elements utilized for gasoline and a catalyst of a diesel engine and, more specifically, to the sample preprocessing method for analyzing the content of the rare-earth elements which enables the remarkable reduction of errors of a content analysis using an inductively coupled plasma (ICP) spectral device in comparison with an existing sample preprocessing method which is not standardized by preprocessing a sample of the rare-earth elements under optimized analysis conditions of microwaves at a rate of a mixed acid; and improves the reliability of an analysis result by standardizing with an optimal method. [Reference numerals] (AA) Sample pre-processing and analyzing method of catalyst rare-earth elements; (BB) In electric dryer at the temperature of 550~560 for one hour; (CC) Sample measurement three decimal places; (DD) Cutting the sample into three parts; (EE) Coarse-grinding of the sample; (FF) Fine grinding of the sample; (GG) Sample measurement four decimal places 0.25-0.30 g; (HH) Completely melting the sample; (II) Quantitative analysis for rare-earth elements |
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