According to “Methods Prescribed by the Minister of Health, Labour and Welfare Based on the Provisions of the Ordinance on Water Quality Standards” (MHLW Notification No. 261*, July 22, 2003), Table 12 specifies the Ion Chromatography–Post-Column Absorptiometry Method. The method in Table 12 mentions using columns packed with a porous polymer gel modified with -SO3H at 2 – 4 meq/g as the ion-exchange group, or columns offering equivalent or superior separation performance. Using RSpak KC-811 6E, we performed analysis of cyanide ion and cyanogen chloride. KC-811 6E enables accurate determination of cyanide and cyanogen chloride.
**Target analytes in Table 12 include cyanide ion and cyanogen chloride.
- (Note)
- As of April 1, 2024, responsibility for water quality measures (such as establishing water quality standards and determining methods for water quality inspections conducted by water utilities) has been transferred from the Ministry of Health, Labour and Welfare to the Ministry of the Environment. Consequently, the name has been changed to “Methods Prescribed by the Minister of the Environment Based on the Provisions of the Ordinance on Water Quality Standards”.
*The version at the time of the application acquisition.
Sample: 100 µL each
10 µg/L each
- CN-
- CNCl
- Column
- ：Shodex RSpak KC-811 6E (6.0 mm I.D. x 250 mm)
- Eluent
- ：1.0 mM H2SO4 aq.
- Reagent A
- ：Chloramine T solution
- Reagent B
- ：4-Pyridinecarboxylic acid-Pyrazolone solution
- Flow rate
- ：(Eluent); 1.0 mL/min
(Reagent); 0.5 mL/min each - Detector
- ：VIS (638 nm)
- Column temp.
- ：40 ℃
- Column temp.
- ：(Reagent A); 40 ℃
(Reagent B); 80 ℃
Sample Name Index
Operation Manual / Certificate of Analysis
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