Chromium in biological systems

The life scientist interested in the concentration, distribution and speciation of chromium in biological systems is in need of reliable and precise analytical data. These can only be obtained by applying first of all a representative sampling and handling procedure, followed by the correct use of an analytical technique with suitable sensitivity. Finally, the bias of the whole method can be tested by analyzing biological standard reference materials, certified for chromium at comparable levels as the unknowns. 

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