Soft drinking water was sourced from the Bury (Lancashire, UK) potable mains
supply.
This material is intended for use in development, validation or quality control of
analytical methods for the determination of metals in soft drinking water.
Certified Values
Aluminium ....................... 204 ± 10 µg/L Iron ................................... 201 ± 2 µg/L
Arsenic .......................... 10.3 ± 1.3 µg/L Lead ..............................26.0 ± 0.9 µg/L
Barium ............................. 127 ± 13 µg/L Magnesium ................. 1.01 ± 0.04 mg/L
Calcium ...................... 7.33 ± 0.25 mg/L Manganese ....................52.5 ± 3.9 µg/L
Cadmium ..................... 5.26 ± 0.21 µg/L Nickel .............................20.5 ± 1.6 µg/L
Chromium ...................... 50.8 ± 2.7 µg/L Sodium ....................... 5.84 ± 0.14 mg/L
Copper .......................... 2100 ± 70 µg/L Zinc ................................... 628 ± 4 µg/L
Collected from the River Thames downstream of Henley-on-Thames at Aston, U.K.
Filtered at 0.7 µm and then at 0.45 µm. Stabilised at pH 2 by the addition of
concentrated HNO
3
.
This material is intended for use in development, validation or quality control of
analytical methods for the determination of elements in river waters.
Certified Values
Aluminium ......................... 73 ± 13 µg/L Lead ............................... 5.2 ± 0.3 µg/L
Calcium ............................ 109 ± 3 mg/L Potassium ................... 4.78 ± 0.12 mg/L
Cadmium ..................... 0.11 ± 0.02 µg/L Magnesium ................ 4.62 ± 0.12 mg/L
Chromium .................... 0.78 ± 0.20 µg/L Sodium ......................... 24.7 ± 0.5 mg/L
Copper .......................... 15.4 ± 1.5 µg/L Zinc ............................... 59.7 ± 2.5 µg/ L
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