AJM Abdul, H Lim, AK Miza, Characterization of Ground Water Quality in Southern and Northern Region of Zanzibar Island, Journal of New Developments in Chemistry, Volume 3, Issue 3, 2021, Pages 22-31, ISSN 2377-2549, https://doi.org/10.14302/issn.2377-2549.jndc-21-3740. (http://oap-journals.netjndc/article/1654) Keywords: Drinking water; nitrate; bromide; toxicological perspective; Ion chromatography