Revisited digestion methods for trace element analysis in human hair
نویسندگان
چکیده
منابع مشابه
Comparison of Digestion Methods for the Determination of Trace Elements and Heavy Metals in Human Hair and Nails.
BACKGROUND Microwave is the most reliable sample digestion method. However, it requires expensive microwave digester automation and has relatively low productivity. In this study, three non-automated digestion methods, i.e. wet acid digestion using nitric acid (HNO3) and hydrogen peroxide (H2O2), wet acid digestion using HNO3, and dry washing, are compared in order to determine the best approac...
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For wavelength-dispersive fluorescence analysis, the background is a nonlinear function of 2θ, and a linear interpolation between two background angles gives an erroneously high estimate. This discussion systematically develops and compares interpolation methods analytically, to demonstrate their strengths, weaknesses, and correct use. The background can be estimated from measurement at a singl...
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Background: Alterations of trace elements, could induce metabolic disorders as they forthwith participating in the metabolic pathways and play different roles modulating it as well as many enzymes require trace elements for their activation and functions. Of these elements, selenium (Se), zinc (Zn), copper (Cu) and manganese (Mn) have been recognized as essentials for metabolism. Hyperglycemia ...
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Trace elements are a major area of nutritional status which influence brain functioning and behavior. Recent studies have found significantly abnormal levels of trace nutritive minerals and trace toxic metals in the head hair of children from disadvantaged backgrounds. Utilizing hair element analysis, this study examined 26 trace elements in two groups of young Appalachian children: an economic...
متن کاملEffect of washing procedures on trace-element content of hair.
A pooled sample of hair was divided and portions prepared for analysis by three washing procedures, to evaluate the effect of washing procedure on the subsequent trace-element (Zn, Cu, Mg) content. The methods selected were a detergent wash, a hexane-ethanol wash, and an acetone-ether-detergent wash. For all elements, there was a significant difference among the results after these wash procedu...
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ژورنال
عنوان ژورنال: Journal of Analytical Science and Technology
سال: 2019
ISSN: 2093-3371
DOI: 10.1186/s40543-019-0200-6