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REDUCTION OF MOLECULAR BACKGROUND EMISSION AND SAMPLE MATRIX MANAGEMENT IN A SOLUTION CATHODE GLOW DISCHARGE
REDUCTION OF MOLECULAR BACKGROUND EMISSION AND SAMPLE MATRIX MANAGEMENT IN A SOLUTION CATHODE GLOW DISCHARGE
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机译:溶液阴极辉光放电中分子本底发射的减少和样品矩阵的管理
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摘要
A device and method to reduce molecular background emission and to increase matrix management in solution cathode glow discharge (SCGD). A purging device for purging atmospheric gases from a solution cathode glow discharge (SCGD) apparatus, comprising a hollow body that encloses a plasma generated between a solid anode and a solution cathode, wherein the body comprises at least one opening for release of water vapor generated by the plasma. A method for reducing matrix interferences from a SCGD comprising introducing an internal standard into a sample to be analyzed, wherein the sample comprises at least one element of interest; determining a spatial emission profile of the internal standard; using linear correlation between the spatial emission profile of the internal standard and the element of interest to predict a crossover point; and using the crossover point of the element of interest to select a vertical acquisition height for SCGD analysis.
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