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Basics of Ion Chromatography: Pre-treatment Edition [Technical Document]

IC: Ion Chromatography A clear explanation of sample pretreatment for ion chromatography, including combustion methods.

**Basic Principles of Ion Chromatography: Pre-treatment Edition** Table of Contents Pre-treatment for Ion Analysis 1.1 Purpose of Pre-treatment 1.2 Is Pre-treatment Necessary? 1.3 Influence of Coexisting Components 1.4 Is Pre-treatment for Ion Chromatography Special? Sample Dissolution and Extraction 2 Dissolution 3 Extraction 3.1 Unit Operations Used in Extraction 3.2 Extraction of Ions from Oil Samples by Liquid-Liquid Extraction Method 3.3 Extraction of Ions from Solid Residues by Ultrasonic Extraction Method 3.4 Extraction of Ions from Organic Samples by Organic Solvent Dissolution - Liquid-Liquid Extraction Method 3.5 Extraction of Ions from Food Samples 4 Dissolution by Combustion Method 5 Distillation Total of 20 Pages (Including Cover)

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Preprocessing, in simple terms, refers to "the treatment of samples conducted before measurement." In other words, all operations performed before measurement are considered preprocessing. If we look closely, weighing, measuring, fractionating, and making up to a specific volume also fall under preprocessing operations. Indeed, these operations are important, but they would indicate an excessively broad range of activities. Therefore, if we were to define the term preprocessing a bit more rigorously, it would refer to "the treatment of samples conducted before measurement to facilitate the measurement or to ensure that coexisting components in the sample do not affect the measurement."

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