SEDIMENT AND SEPARATION TYPE CONTINUOUS FLOW ANALYZER, AND QUANTITATIVE DETERMINATION METHOD FOR THIOUREA IN COPPER ELECTROLYTE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To enable highly accurate flow injection(FI) analysis for a sample easily settleable as well, by arranging a settling agent adding part and a filtering part between a sample injection part and a reagent adding part. ;SOLUTION: The settling agent adding part 20 and filtering part 30 are arranged between the sample injection part 10 and reagent adding part 50, and the generation and the filtering of sediment are continuously performed while a sample solution flows toward the reagent adding part 50. The filtering part 30 is jointly provided with a pipeline 40 for washing and is changeably connected freely to a measuring pipeline 90 and the pipeline 40 for washing. A settling agent is added to a sample solution flowing through the measuring pipeline 90 to settle impurities. The sample solution containing the sediment is introduced to the filtering part 30 to separate the sediment by filtering. Thereafter, a buffer liquid is added to a filtrate to form color, and the absorbance of the color is measured by an analysis part 60 to determine a desired component (e.g. the amount of thiourea). Thus, the sample solution is automatically analyzed while flowing through a tubule of the measuring pipeline 90.;COPYRIGHT: (C)1998,JPO