Method for Analyzing Zirconium Concentration in Ferro Silicon Alloys Using Inductively Coupled Plasma Emission Spectrometry

摘要

The present invention relates to a method for analyzing zirconium (Zr) concentration in ferroalloy (Fe-Si) ferroalloy using ICP (Inductively Coupled Plasma Emission Spectroscopy).;According to the invention,;In analyzing zirconium concentration in ferroalloy ferrosilicon using ICP,;Weigh a certain amount of high-purity pure iron and high-purity silicon into a Teflon beaker with high heat and acid resistance, then add standard zirconium solution step by step,;Adding a mixed acid of nitric acid, hydrochloric acid and hydrofluoric acid to the beaker, followed by volatilizing hydrofluoric acid using perchloric acid, and then dissolving the zirconium precipitate with nitric acid solution to pretreat the sample.;Preparing a solution for a calibration curve using the pretreated sample using ICP,;Measuring the intensity according to the zirconium concentration of the solution for the calibration curve by an inductively coupled plasma emission spectrophotometer and preparing a standard calibration curve between the zirconium concentration and the intensity based on this;;Unknown ferrosilicon sample to be analyzed after the sample pretreatment step and measuring the zirconium strength in the solution using ICP, and;Obtaining a zirconium concentration corresponding to the measured intensity based on a standard calibration curve prepared in advance.;According to the present invention, zirconium concentration can be quantitated more accurately and quickly over a wider range than in conventional wet analysis.