Kjell Bjorvatn

TL;DR: Drinking water samples were collected throughout the Ethiopian part of the Rift Valley, separated into water drawn from deep wells, shallow wells, hot springs, springs, rivers and rivers, finding 86% of all wells yield water that fails to pass the quality standards set for drinking water.

TL;DR: Of the various flourosis prevention methods tried in Ethiopia, the treatment of surface water has been shown to be the most feasible and effective for towns and large commercial farms in the Rift Valley, although defluoridation methods should be considered for smaller rural communities.

TL;DR: The present findings indicate that the second molar is the tooth most severely affected by dental fluorosis and dental caries in Ethiopian children living in Rift Valley areas known for endemic fluorosis, both in moderate- and high-fluoride areas.

TL;DR: In this article, a simple, rapid, and reliable method was developed for determination of fluoride in biological samples, which was determined by alkali fusion and fluoride ion-selective electrode, and the influence of concentration and volume of sodium hydroxide as ashing aid, sample weight, lifetime of the electrode and storage time of the sample solutions on analytical results were determined.

TL;DR: Concentrations of several elements exceed current drinking water action levels in a significant number of cases and the economic and toxicological impacts of these findings require urgent assessment.