反应详情

One-gram portion of barium carbonate was dissolved in 5 ml of 99% acetic acid (extra pure grade). The solution was diluted with pure water such that the total amount of the solution should be 1 L. Thus, a sample for measurement was prepared. The gluconic acid content in the sample for measurement was measured by ion chromatography (using ION CHROMATOGRAPH IC-2001, manufactured by Tosoh Corporation). Elute used on measuring was sodium carbonate-sodium hydrogen carbonate mixed solution. Sodium carbonate-sodium hydrogen carbonate mixed solution was prepared by dissolving 0.0468 g of a sodium carbonate reagent (extra pure grade) and 0.0636 g of a sodium hydrogen carbonate reagent (extra pure grade) in an appropriate amount of distilled water to prepare a solution, and then, in a graduated cylinder, distilled water was further added to the solution such that the total amount of the solution should be 1 L. Separation column was TSK gel Super IC-AP. Suppresser gel was TSK suppress IC-A. Calibration curve was made using test samples, prepared by dissolving a potassium gluconate reagent (extra pure grade) in distilled water, and then adjusted such that gluconic acid concentration should be 10 ppm, 25 ppm, or 50 ppm, respectively. Table 3 shows the results.

1. customThus, a sample for measurement was prepared
2. washElute
3. customto prepare a solution
4. distillationin a graduated cylinder, distilled water
5. additionwas further added to the solution such that the total amount of the solution
6. customSeparation column
7. customprepared
8. concentrationadjusted such that gluconic acid concentration