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trace elements

trace elements (GB)

Term (also micro-element) for chemical elements that only occur in low concentrations or traces. When the concentration is extremely low, the term ultra trace element is used. In geochemistry, material components and accompanying elements of rocks and minerals in concentrations below 0.1% or 1000 ppm are generally referred to as trace elements. As essential trace elements are in the biology chemical elements that are essential for a living being (colloquially mostly related to humans) and occur in mass proportions of less than 50 mg / kg in the organism. These include arsenic (As), chromium (Cr), cobalt (Co), iron (Fe), iodine (I), copper (Cu), manganese (Mn), molybdenum (Mo), nickel (Ni), selenium (Se), silicon (Si), vanadium (V), zinc (Zn) and tin (Sn). They are for building enzymes necessary. In viticulture according to Bonitur (Soil analysis) necessary trace elements fertilization added. Trace elements also occur in wine; see under ash. total extract and nutrient,

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