Chemistry Reference
In-Depth Information
Chloride
RW
0.050
7
97.7
0.0047
DW
10.0
7
98.2
0.289
SW
1.0
7
105.0
0.139
WW
7.5
7
82.7
0.445
Fluoride
RW
0.24
7
103.1
0.0009
DW
9.3
7
87.7
0.075
SW
0.50
7
74.0
0.0038
WW
1.0
7
92.0
0.011
Nitrate-N
RW
0.10
7
100.9
0.0041
DW
31.0
7
100.7
0.356
SW
0.50
7
100.0
0.0058
WW
4.0
7
94.3
0.058
Nitrite-N
RW
0.10
7
97.7
0.0014
DW
19.6
7
103.3
0.150
SW
0.51
7
88.2
0.0053
WW
0.52
7
100.0
0.018
o-Phosphate-
P
RW
0.50
7
100.4
0.019
DW
45.7
7
102.5
0.386
SW
0.51
7
94.1
0.020
WW
4.0
7
97.3
0.04
Sulphate
RW
1.02
7
104.3
0.066
DW
98.5
7
111.6
1.475
SW
10.0
7
134.9
0.709
WW
12.5
7
102.1
0.466
RW=Reagent water; DW=drinking water; SW=surface water; WW=wastewater
Source: Reproduced with permission from the Environmental Protection Agency, US [16]
Rocklin and Johnson [18] overcame the latter problem by placing an ion exchange
column in front of the electrochemical detector. Cyanide and sulphide are separated and
thus are determined simultaneously. Although bromide and iodide can be determined by
ion chromatography with conductivity detection, the use of electrochemical detection
results in greater selectivity as well as increased sensitivity.
Sulphide and cyanide
Bond
et al.
[21] have described a method for the simultaneous determination of down to
1mg L
−1
free sulphide and cyanide by ion chromatography with electrochemical
Search WWH ::
Custom Search