Chemistry Reference
In-Depth Information
Element
added
Concn
mg
L
−1
Maximum concn. in
drinking waters
mg L
−1
(A) Total 1
found
µg L
−1
(B) Free 1
found
µg L
−1
Zn
2+
1
0.69
4.0
3.9
Cu
2+
1
0.36
4.0
3.8
Li
2+
1
0.01
4.1
3.8
Pb
2+
0.1
0.046
4.0
3.9
Fe
3+
2
1.5
4.0
3.8
Mn
3+
1
0.06
3.9
3.9
Ni
2+
0.2
0.013
4.0
4.2
Hg
2+
0.005
0.001
3.9
4.2
Co
2+
0.2
0.011
4.0
4.2
Mg
2+
30
23
4.1
4.0
Cl
−
400
245
4.0
4.0
Br
−
1
-
4.0
4.1
F
−
1
-
4.1
4.3
IO
3
-
0.004
-
8.0
4.0
SO4
2-
200
-
4.1
4.5
Humic acid
20
-
3.9
0.0
Iodoform
1
-
5.6
5.6
Methyliodide
0.1
-
4.2
4.2
Source: Reproduced with permission from the Royal Society of Chemistry [38]
Table 7.10
Comparison of the proposed method for total inorganic iodine with automated
spectrophotometric cerium(IV) sulphate-arsenious and method for a range of
waters
Iodine concentration
µg L
−1
Sample source
Moxon method [38]
Keller's et al. [40] method
Slough
11.5
12.7
Oakington
5.5
6.0
Catterick
0.7
0.7
Hexham
2.3
2.9
Royston
4.5
5.2
Harrogate
2.2
1.7
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