Determination of Chromium,Manganese,Nickel,Copper,Aluminum and Titanium Elements in Ferroboron by Inductively Coupled Plasma Atomic Emission Spectrometry with Super Microwave Digestion
A method for the determination of chromium,manganese,nickel,copper,aluminum and titanium elements in ferroboron by inductively coupled plasma atomic emission spectrometry with super microwave digestion was proposed.The digestion acid system composed of 3 mL of nitric acid,1 mL of hydrochloric acid,2 mL of hydrofluoric acid,1 mL of sulfuric acid and 1 mL perchloric acid was used to treat 0.1 g of ferroboron sample by super microwave digestion instrument,and the sample could be completely digested at the highest digestion temperature of 270℃for holding 40 min under the heating pressure of 4 MPa.It was shown that the linear ranges of the working curves for 6 analytic elements were 0.1-2.0 mg·L-1,with detection limits in the range of 8.5×10-5%-2.22×10-4%.Test for recovery was made on the actual sample by standard addition method,giving results in the range of 90.0%-110%,and RSDs(n=11)of the determined values were less than 3.0%.The method was used to analyze the ferroboron standard samples,and the determined values were in good agreement with the standard values.
super microwave digestioninductively coupled plasma atomic emission spectrometryferroboronelement
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