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Method for measuring content of aluminum, iron, silicon, lead, tin and manganese in aluminum copper alloy simultaneously

A technology of aluminum-copper alloy and aluminum-iron-silicon, applied in the direction of material excitation analysis, thermal excitation analysis, etc., can solve the problems of low efficiency and high detection limit of detected element range, and achieve accurate analysis results, good application effect and high sensitivity Effect

Inactive Publication Date: 2016-11-23
INNER MONGOLIA BAOTOU STEEL UNION
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Problems solved by technology

Among them, when the copper-chromium-zirconium alloy sample is dissolved in nitric acid (1+2) and sulfuric acid (1+1), and measured by ICP-AES after constant volume, the chromium analysis line is selected by selecting 284.984nm and 343.823nm wavelength lines respectively It can avoid the interference of matrix elements, but the detection limit of this method is relatively high. This method is suitable for on-site production quality control, but it is difficult for the simultaneous determination of multiple elements in aluminum-copper alloy. relatively low efficiency

Method used

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  • Method for measuring content of aluminum, iron, silicon, lead, tin and manganese in aluminum copper alloy simultaneously
  • Method for measuring content of aluminum, iron, silicon, lead, tin and manganese in aluminum copper alloy simultaneously
  • Method for measuring content of aluminum, iron, silicon, lead, tin and manganese in aluminum copper alloy simultaneously

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Make working curve by above-mentioned method, curve correlation coefficient r is greater than 0.999, prepare 11 parts of blank solutions by experimental method and measure for 3 times, according to the detection limit formula CL=3Sb / k defined by International Union of Pure and Applied Chemistry (IUPAC) (Sb is the standard deviation of the blank, k is the slope of the corresponding calibration curve) The calculated method detection limit is Al 0.003%; Mn, Fe, Si, Pb, Sn 0.001at%.

Embodiment 2

[0047] Weigh aluminum brass (BY1946-1), aluminum bronze (GBW02119), aluminum brass (BY1905-1), (BY1913-1) and measure according to the above method, the results are shown in Table 1.

[0048] Table 1 Determination results of standard samples

[0049]

Embodiment 3

[0051] Weigh two parts of high-purity copper, add Si, Pb, Sn, Mn standard solution respectively; method, and the results are shown in Table 2.

[0052] Table 2 Determination results of standard sample spiked recovery

[0053]

[0054]

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Abstract

The invention discloses a method for simultaneously determining the content of aluminum, iron, silicon, lead, tin and manganese in an aluminum-copper alloy. The steps are: making a sample of the aluminum-copper alloy to be tested and a blank sample of high-purity copper, dissolving the sample, cooling it to room temperature, and using Dilute with high-purity water to the mark, shake well and set aside, configure the standard calibration curve solution of each element, for the production of the standard curve, select the spectral lines of each element as the analysis line, introduce the standard calibration curve solution into the inductively coupled plasma emission spectrometer, and draw the calibration curve , introduce the sample to be tested and the blank sample into the inductively coupled plasma optical emission spectrometer, measure the signal intensity of the ion to be tested, and calculate the element content in the sample to be tested according to the calibration curve of each standard solution with known mass percentage. The invention has good application effect through multiple inspections of samples of aluminum bronze, aluminum brass and aluminum-copper alloy, adopts matrix matching to eliminate matrix interference, has the characteristics of wide linear range, high sensitivity, simple and convenient operation, and accurate and reliable analysis results.

Description

technical field [0001] The invention belongs to the technical field of metallurgical analysis, and is a method of decomposing a sample with nitric acid and hydrochloric acid, and using ICP-AES (inductively coupled plasma atomic emission spectroscopy) to directly and simultaneously measure aluminum, iron, silicon, lead, Analysis method of tin and manganese. Background technique [0002] There are many types of copper alloys, which are generally divided into: various brass with copper and zinc as the main components; bronze with copper and tin or other elements as the main components. The classic analysis methods for alloying elements and impurity elements in copper alloys are volumetric method, photometric method, and atomic absorption spectrometry. There is one method for each element in these methods, and the operation is relatively cumbersome. [0003] In recent years, analysts have developed inductively coupled plasma atomic emission spectrometry for the determination of...

Claims

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Application Information

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IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 卢艳蓉魏淑梅李秀芳张素兰
Owner INNER MONGOLIA BAOTOU STEEL UNION
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