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Germanium ranks 50th in abundance of the elements in ... Germanium oxide is a dopant of ... are quite reactive and present an immediate hazard to human health on ...
The abundance of elements in Earth's crust is shown in tabulated form with the estimated crustal abundance for each ... germanium: Ge Chalcophile 1.5 (0.00015%) 155 ...
Some plants take up germanium from the soil in the form of germanium oxide. [clarification needed] These plants, which include grains and vegetables contain roughly 0.05 parts per million of germanium. The estimated human intake of germanium is 1 milligram per day. There are 5 milligrams of germanium in a typical 70-kilogram human. [18]
Parts-per-million cube of relative abundance by mass of elements in an average adult human body down to 1 ppm. About 99% of the mass of the human body is made up of six elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Only about 0.85% is composed of another five elements: potassium, sulfur, sodium, chlorine, and magnesium ...
The abundance in the Earth's crust is approximately 16.9 ppm. It is the 34th most abundant element in the crust. [55] This is comparable to the crustal abundances of lead, cobalt, and niobium. Yet unlike these elements, gallium does not form its own ore deposits with concentrations of > 0.1 wt.% in ore.
The abundance of the chemical elements is a measure of the occurrence of the chemical elements relative to all other elements in a given environment. Abundance is measured in one of three ways: by mass fraction (in commercial contexts often called weight fraction), by mole fraction (fraction of atoms by numerical count, or sometimes fraction of molecules in gases), or by volume fraction.
Kidney failure and fatalities have been recorded arising from the ingestion of germanium dietary supplements (~15 to 300 g in total consumed over a period of two months to three years). [82] Exposure to osmium tetroxide (OsO 4 ) may cause permanent eye damage and can lead to respiratory failure [ 91 ] and death. [ 92 ]
The dioxide, GeO 2 can be obtained by roasting germanium disulfide (GeS 2) or by allowing elemental germanium to slowly oxidze in air, [5] and is a white powder that is only slightly soluble in water but reacts with alkalis to form germanates. [4] The monoxide, germanous oxide, can be obtained by the high temperature reaction of GeO 2 with Ge ...