Chemistry Reference
In-Depth Information
10.21
Thiosulphate
10.21.1
Titration
The application of this technique is discussed under multianion analysis in section
14.3.2.1.
10.21.2
Atomic absorption spectrometry
Chakraborty and Das [78] have described a method for preconcentrating and determining
thiosulphate in photographic waste effluents in which a stable ion associated complex is
formed between lead, thiourea, and thiosulphate in alkaline medium. This complex was
extracted into
n
-butyl acetate:butanol (2:1) solvent mixture prior to determination in
amounts down to 19µg L
−1
by atomic absorption spectrometry.
10.21.3
High performance liquid chromatography
The application of this technique is discussed under multianion analysis in section
13.1.4.1.
10.22
Multianion analysis
10.22.1
Ion chromatography
See Table 10.3.
Table 10.3
Determination of sulphate in treated waters by ion chromatography
Type of water sample
Co-determined onions
Ref.
NO
2
, NO
3
, PO
4
, F, Br
Industrial effluents
[79]
Industrial effluents
Cl, F
[80]
Industrial effluents
Cl, F, Br
[82]
Industrial effluents
Br, I
[83]
Source: Own files
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