Main features of instrumental analysis
An analysis of multiple or special functions: sometimes qualitative and quantitative analysis can be made, and sometimes the composition ratio of the material and the valence of the atom can be measured simultaneously. Radioactive analysis can also be used for trace impurity analysis.
Fast: for example, in 1min the simultaneous determination of 48 elements in emission spectral analysis method, sensitivity of NG grade 1?.
1. High sensitivity: most instrumental analysis is suitable for trace and trace analysis. For example, the absolute sensitivity of some elements to 10^-14g can be determined by atomic absorption spectrometry. The electronic spectra of even up to 10^-18g, the relative sensitivity of the?? - 1 - 1, ng and even smaller?.2, sampling amount is few: chemical analysis uses 10^-1 ~ 10^-4g; instrument analysis sample is often in 10^-2 ~ 10^-8g.3, the analysis accuracy at low concentration is high: the content of impurities in the range of 10-5% ~ 10-9% range, the relative error is as low as 1% ~ 10%.
