Determination of boron in water samples by chemical prompt gamma neutron activation analysis |
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Authors: | P S Ramanjaneyulu Y S Sayi T Newton Nathaniel A V R Reddy K L Ramakumar |
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Institution: | (1) Radioanalytical Chemistry Section, Radiochemistry and Isotope Group, Bhabha Atomic Research Centre, Mumbai, 400085, India;(2) Radiochemistry Division, Radiochemistry and Isotope Group, Bhabha Atomic Research Centre, Mumbai, 400085, India |
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Abstract: | Boron concentration has been determined in groundwater samples, collected from Khuchch, Gujarat, India, by prompt gamma neutron
activation analysis (PGNAA) after selective separation and pre-concentration by solvent extraction with 10% 2-ethyl hexane
1,3-diol in CHCl3. Solvent extraction separation helped to eliminate the interfering elements in PGNAA determination of boron. The sensitivity
of PGNAA is found to be 18.83 cps/mg B based on the slope of a calibration plot obtained by carrying out measurements on synthetic
boric acid samples containing boron in the range of 30–150 μg. Detection limit of the method is 0.2 μg/g counted for 35,000
seconds at a sample size of 15 gram. The precision (relative standard deviation at 1σ level) and accuracy of the method is
5%. The analytical results of the present method agreed well with well-established spectrophotometric determination of boron
as boron-curcumin complex and inductively coupled plasma atomic emission spectroscopy (ICP-AES). |
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