Quantitative Analysis of Thorium in Standard Samples and Monazite Sands using Nornicotine Alkaloid

Nashat M. M. Abd-Alaty¹* and Mohamed E. El-Awady²

¹Department of Medical and Radiological Research, Nuclear Materials Authority, Cairo, Egypt

²Department of Reactor Materials, Nuclear Materials Authority, Cairo, Egypt

Corresponding Author: [email protected]; Tel: +201006782093

Recieved Date: August 06, 2020; Accepted Date: September 23, 2020; Published Date: 03 October 2020

Citation: Abd-Alaty NM and El-Awady ME. Quantitative Analysis of Thorium in Standard Samples and Monazite Sands using Nornicotine Alkaloid. Trop J Nat Prod Res. 2020; 4(9):545-549.  https://doi.org/10.26538/tjnpr/v4i9.9

Copyright: © 2020 Abd-Alaty and El-Awady. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

ABSTRACT

A rapid, sensitive, and selective method was developed for the quantitative determination of thorium concentration which is an important natural mineral based on the complex formed with natural phytochemical nornicotine alkaloid at pH 4 – 6, the coloured complex was extracted in chloroform with a linear relationship in a concentration range from 6-50 µgmL^-1 with molar absorptivity 1.8 x 104 (1 mol^-1 cm^-1), Sandell’s sensitivity (µgcm^-2) 2.3 × 10^?2, correlation coefficient 0.9998, limit of detection 0.57 µg mL^-1 and limit of quantification 1.88 µg mL^-1at 430?nm. The effects of pH, nornicotine concentration, temperature and time were also studied. The method shows high selectivity for thorium and holds its accuracy and precision well. Therefore, the method is useful when applied to the determination of thorium in synthetic solution and in the monazite sample.