icp-aes method for rapid and simultaneous determination of silicon, copper, phosphorus, arsenic, lead, tin, antimony and bismuth in ferromolybdenum

Abstract

The invention relates to a method for measuring the contents of silicon, copper, phosphorus, arsenic, lead, tin, antimony and bismuth in ferromolybdenum rapidly and simultaneously by using ICP-AES (Inductively Coupled Plasma-Atomic Emission Spectrometry). The method comprises the following steps of: drawing silicon-copper-phosphorus standard curves by using a ferromolybdenum standard sample, adding mixed standard solution of arsenic, lead, tin, antimony and bismuth in an online manner to realize online matching of basal bodies, compiling an IEC data model in method establishment by using an interference coefficient method, eliminating spectral interference among coexisting elements, finally measuring the detection limits of all the elements and carrying out precision test and accuracy test. Results are as follows: in the method, the relative standard deviation (n is equal to 11) of silicon, copper and phosphorus is 0.56%-2.21%, the relative standard deviation (n is equal to 11) of arsenic, lead, tin, antimony and bismuth is 1.35%-10.1%, and the accuracy of all the elements is good. The method has the advantages of economic and practical effects, short analysis period and capability of rapidly and comprehensively analyzing the content of impurities in the ferromolybdenum, and provides new experiences and references for rapidly and comprehensively detecting and analyzing the content of the impurity elements in the ferromolybdenum.

Description

technical field [0001] The invention relates to a rapid detection method for impurity elements in ferromolybdenum, in particular to a rapid and comprehensive determination of silicon, copper, phosphorus, arsenic, lead and tin in ferromolybdenum by using inductively coupled plasma atomic emission spectroscopy (ICP-AES) , antimony, bismuth content method. Background technique [0002] Molybdenum-iron alloy contains 55% to 75% molybdenum, 25% to 45% iron, and the rest are low-level impurities. Ferromolybdenum is widely used in the smelting of metallurgical structural steel, heat-resistant steel, acid-resistant steel and tool steel. In tool steel and military steel smelting, these low-content impurities are likely to have a certain impact on the metallurgical properties of finished steel, especially arsenic, lead, tin, antimony, and bismuth must be strictly controlled within 2ppm, so ferromolybdenum must be used as an alloy additive Strictly control the content of impurity ele...

AI Technical Summary

Problems solved by technology

However, these methods are not comprehensive, especially X-ray fluorescence spectrometry has no advantage in the detection of trace elements arsenic, lead, tin, antimony, bismuth; due to the complex matrix in ferromolybdenum, there are many spectral interferences among the coexisting elements in ferromolybdenum that cannot be detected. Eliminate, bring difficulty to comprehensive detection

[0004] To sum up, there is no method with little interference that can quickly and comprehensively analyze the content of silicon, copper, phosphorus, arsenic, lead, tin, antimony, and bismuth in ferromolybdenum.

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