Optimization of conditions for spectral determination of chlorine content in cement-based materials
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A combination laser/electrospark method is used for fast determination of chlorine in cement-based materials. Excitation of the spectra is carried out both directly in an ablation plume and when a pulsed electric discharge is applied to it. In both cases, we obtain calibration curves that are linear for the major concentration range of practical importance for the analyte element, up to 1.5%. The chlorine detection limit for the combination discharge approach is 0.05%. We consider the basic steps and characteristic features of the proposed experimental procedures.
Key wordsspectral analysis emission spectroscopy laser ablation plasma pulsed electric discharge chlorine cement, concrete
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