Robuta

https://www.mdpi.com/2073-4441/17/13/1990 Current State of Arsenic, Fluoride, and Nitrate Groundwater Contamination in Northern Mexico:... The plateaus of north-central Mexico have an arid to semiarid climate and groundwater naturally contaminated with inorganic arsenic (iAs) and fluoride (F).... current statearsenic fluoride https://www.kth.se/om/2.266/hydrogeochemistry-of-arsenic-fluoride-and-other-trace-elements-in-groundwater-in-northern-tanzania-1.1239020 Hydrogeochemistry of arsenic, fluoride, and other trace elements in groundwater in northern... Occurrence, distribution, and impacts on drinking water quality arsenic fluoridetrace elementshydrogeochemistry