Under the current drinking water quality standards, standard values are set for 51 items (Enacted on April 1, 2015 by Ministry of Health, Labour and Welfare, Japan). The table shows the Shodex column suitable for analyzing each anion.
| Substance | Quality standard | Measurement | Recommended column |
|---|---|---|---|
| Nitrate and Nitrite |
10mg/L
|
Ion chromatography
|
(Non-suppressor method)
IC I-524A, IC NI-442 (Suppressor method) IC SI series |
| Fluoride |
0.8mg/L
|
Ion chromatography
|
(Non-suppressor method)
IC I-524A, IC NI-442 (Suppressor method) IC SI series |
| Chroride |
200mg/L
|
Ion chromatography
|
(Non-suppressor method)
IC I-524A, IC NI-442 (Suppressor method) IC SI series |
| Bromate |
0.01mg/L
|
Ion chromatography with post column-adsorption photometry
|
IC SI series
|
| Cyanide and Cyanogen chloride |
0.01mg/L
|
Ion chromatography with post column-adsorption photometry
|
RSpak KC-811 6E
|
| Chlorate |
0.6mg/L
|
Ion chromatography
|
(Suppressor method)
IC SI-52 4E, SI-35 4D |
| Nitrite |
0.04mg/L
|
Ion chromatography
|
IC SI-52 4E
|
