| Variable |
Method (reference) |
Analytical precisiona |
Analytical rangeb |
| pH |
SS 028122-2 mod. |
0.36 pH units |
3–10 pH units |
| Electrical conductivity |
SS-EN 27888-1 |
17%
7% |
0.1–10 mS/m
10–70 mS/m |
| Ca, Calcium |
ICP-AES, SS-EN ISO 11885:2009 |
0.005 meq/l
9% |
0.001–0.050 meq/l
0.050–5.0 meq/l |
| Mg, Magnesium |
ICP-AES, SS-EN ISO 11885:2009 |
0.002 meq/l
10% |
0,001–0.02 meq/l
0.02–1.0 meq/l |
| Na, Sodium |
ICP-AES, SS-EN ISO 11885:2009 |
0.001 meq/l
6% |
0.001–0.02 meq/l
0.02–3.0 meq/l |
| K, Potassium |
ICP-AES, SS-EN ISO 11885:2009 |
0.0004 meq/l
7% |
0.0005–0.005 meq/l
0.005–0.3 meq/l |
| Alkalinity |
SS-EN ISO 9963-2 v.1 mod. |
0.012 meq/l
5% |
0–0.1 meq/l
0.1–3.0 meq/l |
| Acidity |
Standard Methods 16:th ed. pp. 265-269. |
21% |
0–0.100 meq/l |
| SO4-S, Sulfate |
SS-EN ISO 10304-1 v. 2 mod. |
0.006 meq/l
6% |
0.01–0.10 meq/l
0.10–1.7 meq/l |
| Cl, Chloride |
SS-EN ISO 10304-1 v. 2 mod. |
0.002 meq/l
10% |
0.007–0.020 meq/l
0.020–0.6 meq/l |
| F, Fluoride |
SS-EN ISO 10304-1 v.2 mod |
0.02 mg/l
20% |
0.05–0.10 mg/l
0.10–4 mg/l |
| NH4-N, Ammonium nitrogen |
Bran Luebbe Method G-176-96 on AAIII |
2 µg/l
16% |
3–10 µg/l
10–100 µg/l |
| NO2/3-N, Nitrite+Nitrate nitrogen |
SS-EN ISO 13395, v.1, mod.
Bran Luebbe Method G-287-02 on AAIII mod. |
11%
5% |
1–100 µg/l
100–1000 µg/l |
| Kjeldahl nitrogen |
The method has been replaced with TNb (see below) |
|
|
| TN, Total nitrogen, TNb |
SS-EN 12260:2004 (combustion+ chemiluminiscence) |
18%
10% |
50–1000 µg/l
1000–5000 µg/l |
| TN,Total nitrogen (summation method) |
The method has been replaced with TNb (see above) |
|
|
| TN, Total nitrogen, persulfate oxidation |
The method has been replaced with TNb (see above) |
|
|
| PO4-P, Phosphate phosporus |
Bran Luebbe Method G-176-96 on AAIII |
1 µg/l
13% |
1–5 µg/l
5–40 µg/l |
| Total phosporus |
SS-EN ISO 6878:2005 mod.
Bran Luebbe Method G-176-96 on AAIII |
1 µg/l
10% |
1–5 µg/l
5–100 µg/l |
| COD-Mn |
See permanganate index |
|
|
| Permanganate index |
SS 028118-1 mod. |
1.2 mg/l
12% |
4–10 mg/l
10–40 mg/l |
| Absorbance (water colour) |
SS-EN ISO 7887 v. 1 |
12% |
0.01–1.0 abs. units |
| Suspended matter |
SS-EN 872:2005, mod. |
22% |
>5 mg/l |
| Turbidity |
SS-EN ISO 7027, v. 1 |
0.33 FNU
11% |
0.5–5 FNU
5–250 FNU |
| Si, Silicon |
Bran Luebbe Industrial Method G-177-96 |
9% |
0.5–10 mg/l |
| TOC, Total organic carbon |
SS-EN 1484 v. 1 |
11%
11% |
0.5–20 mg/l
20–100 mg/l |
| Aluminium fractionation |
Own method, Aluminiumfraktionering, 2006-06-01 (in Swedish)
ICP-AES ion exchange |
14 µg/l
14% |
20–100 µg/l
100-1000 µg/l |
| Aluminium, acid soluble |
Old method, in use until 2003 |
|
|
| Al, Aluminium |
ICP-AES, SS-EN ISO 11885:2009 |
8 µg/l
21% |
5–40 µg/l
40–2000 µg/ |
| Fe, Iron |
ICP-AES, SS-EN ISO 11885:2009 |
6 µg/l
14% |
5–40 µg/l
40–5000 µg/l |
| Mn, Manganese |
ICP-AES, SS-EN ISO 11885:2009 |
3 µg/l
7% |
0.5–40 µg/l
40–2000 µg/l |
| Chlorophyll a |
SS 028146-1 |
10% |
>0.5 µg/l |
| O2, Dissolved oxygen |
SS Fd, 028114-2 vers. 2 |
5% |
0–20 mg/l |
| Al, Aluminium |
ICP-MS, replaced with ICP-AES |
|
|
| As, Arsenic |
ICP-MS, SS-EN ISO 17294-2:2005 |
16%
15% |
0.03–1 µg/l
1–20 µg/l |
| Cd, Cadmium |
ICP-MS, SS-EN ISO 17294-2:2005 |
41%
10% |
0.005–0.100 µg/l
0.1–20 µg/l |
| Co, Cobalt |
ICP-MS, SS-EN ISO 17294-2:2005 |
19%
10% |
0.006–0.100 µg/l
0.100–20 µg/l |
| Cr, Chromium |
ICP-MS, SS-EN ISO 17294-2:2005 |
30%
30% |
0.05–1 µg/l
1–20 µg/l |
| Cu, Copper |
ICP-MS, SS-EN ISO 17294-2:2005 |
14%
12% |
0.04–2 µg/l
2–20 µg/l |
| Fe, Iron |
ICP-MS, replaced with ICP-AES |
|
|
| Mn, Manganese |
ICP-MS, replaced with ICP-AES |
|
|
| Mo, Molybdenumc |
ICP-MS, SS-EN ISO 17294-2:2005 |
|
|
| Ni, Nickel |
ICP-MS, SS-EN ISO 17294-2:2005 |
29%
11% |
0.05–1 µg/l
1–20 µg/l |
| Pb, Lead |
ICP-MS, SS-EN ISO 17294-2:2005 |
17%
10% |
0.02–1 µg/l
1–20 µg/l |
| W, Tungstenc |
ICP-MS, SS-EN ISO 17294-2:2005 |
|
|
| Zn, Zinc |
ICP-MS, SS-EN ISO 17294-2:2005 |
33%
17% |
0.2–20 µg/l
20–100 µg/l |
| V, Vanadium |
ICP-MS, SS-EN ISO 17294-2:2005 |
24%
12% |
0.03–2 µg/l
2–20 µg/l |