Rapid and interference free determination of ultra trace level of uranium in potable water originating from different geochemical environments by ICP-OES |
| |
Authors: | R K Singhal H Basu M K T Bassan M V Pimple V Manisha D K Avhad P K Sharma A V R Reddy |
| |
Institution: | (1) Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, 400085, India |
| |
Abstract: | Direct determination of uranium in the concentration range of 8 μg L−1 to mg L−1 in water samples originating from different geochemical environments has been done using Inductively Coupled Plasma-Optical
Emission Spectroscopy (ICP-OES). Uranium detection with 2–3% RSD (relative standard deviation) has been achieved in water
samples by optimizing the plasma power, argon and sheath gas flow. These parameters were optimized for three different emission
lines of uranium at 385.958, 409.014 and 424.167 nm. Interference arising due to the variation in concentration of bicarbonate,
sodium chloride, calcium chloride, Fe and dissolved organic carbon (DOC) on the determination of uranium in water samples
was also cheeked as these are the elements which vary as per the prevailing geochemical environment in groundwater samples.
The concentration of NaHCO3, CaCl2 and NaCl in water was varied in the range 0.5–2.0%; whereas Fe ranged between 1 and 10 μg mL−1 and DOC between 0.1–1%. No marked interference in quantitative determination of uranium was observed due to elevated level
of NaHCO3, CaCl2 and NaCl and Fe and DOC in groundwater samples. Concentration of uranium was also determined by other techniques like adsorptive
striping voltametry (AdSv); laser fluorimetry and alpha spectrometry. Results indicate distinct advantage for uranium determination
by ICP-OES compare to other techniques. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|