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Method for simultaneously determining multi-element contents in aluminium bronze

An aluminum bronze, multi-element technology is applied in the field of simultaneous determination of multi-element content in aluminum bronze, which can solve the problems that the accuracy of the method needs to be improved, it is not suitable for the determination of aluminum bronze, and lead and silicon are not determined. Improve the accuracy of analysis, improve the effect of accuracy

Active Publication Date: 2015-03-11
RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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Problems solved by technology

[0005] In the 23rd issue of "Science and Technology Innovation Herald" in 2009, "Research on the Determination Method of Aluminum, Iron, Manganese, Nickel and Zinc Content in Aluminum Bronze" measured the content of five elements, but did not Determination of lead, silicon and other impurity elements, the recovery rate of the analytical method is 86.12% to 157.0%, and the accuracy of the method needs to be improved (indicate which publication, when it was published, and which issue?)
"ICP-AES Determination of Copper and 10 Impurity Elements in Copper Alloys" in the 5th issue of "Spectrum Laboratory" in 2013 introduced a method for simultaneous determination of 11 elements of copper and impurity elements in copper alloys, but the method It is only suitable for such copper alloys with an element content above 0.1%, so this method is not suitable for the determination of elements with a content below 0.1% in aluminum bronze

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  • Method for simultaneously determining multi-element contents in aluminium bronze
  • Method for simultaneously determining multi-element contents in aluminium bronze
  • Method for simultaneously determining multi-element contents in aluminium bronze

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] (1) Instruments and reagents:

[0043] Optima 7000DV inductively coupled plasma emission spectrometer (Perkin-Elmer, USA). Lead, tin, silicon, zinc, nickel, manganese, and iron single-element standard stock solutions with a concentration of 1.00 mg / mL were developed by the National Nonferrous Metals and Electronic Materials Analysis and Testing Center. High-purity metallic copper with a purity of 99.99% was purchased from Shandong Academy of Metallurgical Sciences. Nitric acid was of superior grade, and the experimental water was 18.25MΩ·cm deionized water.

[0044] (2) Experimental method

[0045] Accurately weigh 0.1 g of the national standard substance of aluminum bronze numbered GBW02118 into a beaker, add 10 mL of nitric acid solution (the volume ratio of nitric acid to water is 1:1), cover the beaker with a watch glass, place it on an electric heating plate and heat until the sample is completely Dissolve; after cooling, transfer the solution into a 100mL volum...

Embodiment 2

[0055] As described in Example 1, the method of using the ICP method to simultaneously determine the element content in aluminum bronze, the difference is that the sample is GBW02119 aluminum bronze national standard substance, and the nitric acid solution used to prepare the sample solution is a volume ratio of nitric acid to water of 1.2: 1. The measurement results are shown in Table 5:

[0056] Table 5 Determination results of element content in GBW02119 aluminum bronze standard substance (n=10)

[0057]

[0058] Same as Example 1, the relative error of the determination result of zinc content is the largest, and the multivariate spectral fitting method is used to correct the spectral interference. After MSF correction, the determination results of zinc content in the GBW02119 aluminum bronze sample are consistent with the standard value, indicating that spectral interference correction can effectively improve the accuracy of the analytical method, as shown in Table 6. ...

Embodiment 3

[0062] As described in Example 1, the method for simultaneously determining element content in aluminum bronze by using the ICP method is different in that the sample is QAl10-3-1.5 aluminum bronze, and the measurement results are shown in Table 7. The content of lead, tin, and nickel impurity elements in the sample was not detected, and the recovery rate experiment of the four detected elements of silicon, zinc, manganese, and iron was carried out to investigate the accuracy of the analysis method.

[0063] Table 7 The experimental results of the recovery rate of element content determination in QAl10-3-1.5 aluminum bronze samples (n=6)

[0064]

[0065] The recovery rate of the addition of standard zinc content was poor. Using the established MSF model, the analysis method was re-run to reprocess the zinc content test data of the aluminum bronze sample.

[0066] Table 8 The MSF method calibration results in the determination of zinc content in QAl10-3-1.5 aluminum bronze ...

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Abstract

The invention discloses a method for simultaneously determining multi-element contents in aluminium bronze. The method comprises the following determination steps of preparing a sample solution, preparing a working curve solution, determining an analyzing spectrum line of elements to be determined, determining the content of elements in the sample by an ICP (Inductively Coupled Plasma) method and correcting the spectrum disturbance by a multi-element spectral fitting method. According to the method disclosed by the invention, the enrichment or separated treatment for trace elements is avoided; after the sample is dissolve and treated at one time, the trace, the dose and the content of major elements can be simultaneously determined; the spectrum disturbance of a matrix to the elements to be determined is effectively corrected by a matrix matching and multi-element spectral fitting method; the analysis period is effectively shortened; the method has the advantages of quickness, simplicity, convenience, accuracy and reliability, and is suitable for quality control over the multi-element content in aluminium bronze products.

Description

technical field [0001] The invention belongs to a method for measuring multi-element content in metals, in particular to a method for simultaneously measuring multi-element content in aluminum bronze with an ICP method. Background technique [0002] Aluminum bronze is a copper alloy widely used in modern industry. It has very good wear resistance and corrosion resistance, and is often used in machinery, automobile manufacturing and construction. Ordinary aluminum bronze alloy is a binary bronze alloy formed by adding aluminum to copper. In order to improve the properties of the alloy, elements such as iron, manganese, and nickel are often added to binary aluminum bronze to improve the mechanical properties and corrosion resistance of aluminum bronze. . The content of impurities such as lead and silicon should be strictly controlled within a certain range, otherwise the mechanical properties and process properties of the alloy will be reduced. Therefore, it is of great si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/71
Inventor 关宁昕张桂芬何雨珊曹昆武姚江伟
Owner RES INST OF PHYSICAL & CHEM ENG OF NUCLEAR IND
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