Abstract
The improvements of ICP-measurements for trace element analysis especially for application in the biomedical and environmental field by using a new type of water cooled spray chamber and mass flow controllers for all the gas flows of an ICP excitation unit are described. Measurements on the long and short time stability, on memory effects in the nebulizing system, on the reproducibility of the results (including day-to-day reproducibility) and on the detection limits show in all the cases a strong improvement. The behaviour of 16 elements (Al, B, Be, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Ni, P, Pb, Ti, V, Zn) was investigated by a simultaneous ICP-spectrometer. The results for some others (Ba, Cd, Ni, Sr, Zn) were obtained by using a sequential spectrometer.
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