COLUMN PRECONCENTRATION OF URANIUM BY 1 -(2-PY RIDYLAZ0)-2-NAPHTHOL SUPPORTED ON NAPHTHALENE USING DIF'FERENTLAL PULSE POLAROGRAPHY
A solid chelating material, 1-(2-pyridy1azo)-2-naphthol (PAN) supported on naphthalene provides a rapid and highly selective means of preconcentration of uranium from aqueous solution. Uranium is quantitatively retained on this adsorbent in the pH range 9.8-10.7 with a flow rate of 1 ml min . The me...
Saved in:
| Format: | Article |
|---|---|
| Language: | English |
| Published: |
University of Tehran
2000-03-01
|
| Series: | Journal of Sciences, Islamic Republic of Iran |
| Online Access: | https://jsciences.ut.ac.ir/article_31300_f07aa8596cd5697036ce52dc4903c800.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | A solid chelating material, 1-(2-pyridy1azo)-2-naphthol (PAN) supported on
naphthalene provides a rapid and highly selective means of preconcentration of
uranium from aqueous solution. Uranium is quantitatively retained on this adsorbent
in the pH range 9.8-10.7 with a flow rate of 1 ml min . The metal complex was
desorbed with 10 ml of 2 M hydrochloric acid and uranium is determined by
differential pulse polarography (DPP). The detection limit is 1.5 µg ml (Signal to
noise ratio = 2). The linearity is maintained in the concentration range 3.0 - 310 ) µ g
ml with a correlation coefficient of 0.9994 (n=7) and relative standard deviation of
1.1 %(n=7). Characterization of the electroactive process included an examination
of the degree of reversibility. Various parameters such as the effect of pH, volume of
aqueous phase and interference of a number of metal ions on the determination of
uranium have been studied in detail to optimize the conditions for determination of
uranium. |
|---|---|
| ISSN: | 1016-1104 2345-6914 |