This International Standard specifies a method for the determination of the dissolved cations Li+, Na+ NH4+, K+, Mn2+, Ca2+, Mg2+, Sr2+ and Ba2+ in water (e.g. drinking water, surface water, waste water).
An appropriate pretreatment of the sample (e.g. dilution) and the application of a conductivity detector (CD) make the working ranges given in table 1 feasible.
The applicability of the method for waste water samples should be proved in each case.
Table 1 - Working ranges of the analytical method | |
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Cation | Typical working range with 10 μl loop mg/l1) |
Lithium | 0,01 to 1 |
Sodium | 0,1 to 10 |
Ammonium | 0,1 to 10 |
Potassium | 0,1 to 10 |
Manganese | 0,5 to 50 |
Calcium | 0,5 to 50 |
Magnesium | 0,5 to 50 |
Strontium | 0,5 to 50 |
Barium | 1 to 100 |
1) The working range is limited by the ion-exchange capacity of the separator column.If necessary, the sample shall be diluted to meet the working range, or use a 100 μl loopfor lower working ranges. |
SDO | ISO: International Organization for Standardization |
Document Number | ISO 14911 |
Publication Date | Not Available |
Language | en - English |
Page Count | |
Revision Level | |
Supercedes | |
Committee | ISO TC 147/SC 2/WG 33 |