SAMPLE PRE-TREATMENT METHOD FOR RARE-EARTH ELEMENTS CONTENT ANALYSIS

摘要

The present invention relates to a kind of sample pretreating methods, the rare earth element for analyzing content is used for the catalyst of gasoline and diesel oil, and relate more specifically in sample pretreating method, analyze the content of rare earth element, it is set to significantly reduce the content analysis of error, using inductively coupled plasma body (ICP) spectral device, with existing sample-pretreating method, this method be not it is standardized, microwave is according to a kind of nitration mixture under the analysis condition optimized by the rare earth element of pretreatment sample; The reliability for improving analysis result passes through standardization and the best approach. ;The 2014 of copyright KIPO submissions;The catalyst rare element of the method for [Reference numerals] (AA) sample preprocessing analysis; Is electric dryer (BB) in temperature 550 ~ 560? middle dipping 1 hour; Sample (CC) measures three decimal places; (DD) cutting sample is divided into three parts; The sample of corase grinding mill (EE); The sample of fine grinding (FF); Sample (GG) measures four decimal places 0.25-0.30 grams; (HH) complete fusing sample; Rare earth element (II) quantitative analysis