Determination of calcium and magnesium in bioleaching solution of uranium ore by optimized EDTA method

DOI

10.2991/ic3me-15.2015.106How to use a DOI?

Keywords

uranium ore, bioleaching solution, mixed indicator, calcium, magnesium

Abstract

This paper determined calcium and magnesium in bioleaching solution of uranium ore by optimized EDTA method. This method used acid chrome blue K-naphthol green B mixed indicator after adding reducing agent hydroxylamine hydrochloride, masking agent triethanolamine and masking agent L-cysteine. This method required the concentration of calcium and magnesium more than 0.50g/L, respectively. Thus, coexisting ions did not interfere with the determination, and the titration end point was obvious. The results show that the standard addition recovery rate of calcium and magnesium is 99.15%~101.40% and 99.26%~101.18%, respectively. The relative standard deviation of calcium and magnesium is less than 3.5% with good accuracy and precision. This method is simple and fast to determine calcium and magnesium in bioleaching solution of uranium ore, and the results are accurate and reliable.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Chengying Zhou
AU  - Yihanna Hu
AU  - Liulu Cai
AU  - Wei Qu
PY  - 2015/08
DA  - 2015/08
TI  - Determination of calcium and magnesium in bioleaching solution of uranium ore by optimized EDTA method
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 535
EP  - 538
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.106
DO  - 10.2991/ic3me-15.2015.106
ID  - Zhou2015/08
ER  -