1. No category

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Appendix 1
Samples, measurands, concentration ranges and preservations
Measurands
Metals in synthetic water
sample
A1M
Al, As, B, Ba, Cd, Co, Cr,
Cu, Fe, Mn, Mo, Ni, Pb,
Sb, Se, Sn, Sr, Stot, Ti, U,
V, Zn
(22 measurands)
Metals in domestic and
natural water
Al, As, B, Ba, Cd, Co, Cr,
Cu, Fe, Mn, Mo, Ni, Pb,
Sb, Se, Sn, Sr, Stot, Ti, U,
V, Zn
(22 measurands)
Sample type
(volume) and
preservations
Synthetic water sample
(60 ml plastic bottle)
Sample
code 1)
A1M
As, Cd, Co, Ni, Pb, Se, U, V:
1 – 10 µg/l
B, Ba, Cr, Cu, Mn, Mo, Sb,
Sn, Sr, Ti, Zn: 10 – 100 µg/l
Al, Fe: 50 – 500 µg/l
Stot: > 10 mg/l
D2M
A1Hg
As, Cd, Co, Ni: 0,1 – 1 µg/l
Ba, Cr, Pb, Sb, Se, Sn, U, V:
1 – 10 µg/l
Al, B, Mn, Mo, Sr, Ti, Zn: 10
– 50 µg/l
Cu, Fe: > 100 µg/l
Stot: > 5 mg/l
As, Cd: 0,1 – 1 µg/l
Co, Cr, Ni, Pb, Se, U, V: 1 –
10 µg/l
B, Ba, Cu, Mo, Sb, Sn, Sr,
Ti, Zn: 10 – 100 µg/l
Al, Fe, Mn: > 100 µg/l
Stot: > 5 mg/l
0,05 – 1 µg/l
12.5 ml conc. HCl/250 ml
Domestic water
(250 ml glass bottle)
D2Hg
0,05 – 1 µg/l
12.5 ml conc. HCl/250 ml
Natural water
(250 ml glass bottle)
N3Hg
> 0,1 µg/l
0.3 ml conc. HNO3/60 ml
Domestic water
(125 ml plastic bottle)
0.625 ml conc. HNO3/125 ml
Natural water
(125 ml plastic bottle)
N3M
0.625 ml conc. HNO3/125 ml
Hg in waters
1)
Sample codes / matrix:
Concentration ranges
Synthetic sample
(250 ml glass bottle)
12.5 ml conc. HCl/250 ml
A = Synthetic sample
D = Domestic water
N = Natural water (river)
Proficiency test MET 04/2017 - Metals in natural water