Vol. 11, Issue 3 (2022)

Author(s):
Insha Irshad, NA Kirmani, JA Sofi, GH Rather, Latief Ahmad and Nageena Nazir

Abstract:
A solid-phase extraction method was carried out to concentrate and separate very trace amounts of nickel from the soil sample for the estimation by flame atomic absorption spectrometry. Nickel ions were adsorbed when aqueous samples of soil were passed through activated carbon. More than 90% recoveries were obtained at pH 5.5. The limits of detection, the limit of quantitation, linear range, and percent relative standard deviation was 0.021 µg g^-1, 0.065 µg g^-1, 0.5-6.0 µg g^-1, and 1.5% respectively. The optimized method was validated and yielded an accuracy greater than 90% and precision <1.5%.