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determination of phosphate and nitrate in seawater.
3.24.4
Preconcentration
The preconcentration of phosphate is discussesd in section 15.3.3.
3.25
Propionate
3.25.1
Ion chromatography
This technique is discussed under multianion analysis in section 12.3.1.
3.26
Pyruvate
3.26.1
Ion chromatography
This technique is discussed under multianion analysis in section 12.3.1.
Fig. 3.17
Effect of residence time on peak height. The squares (0.5mm id
tubing) and circles (0.8mm id) were obtained by changing the flow
rate through a 1 m reaction tube. The square at the extreme right
corresponds to 0.7ml min−1. The triangles were obtained by using a
0.8mm id tube and a flow rate of 2.0ml min
−1
. Residence time was
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