Method for determining sodium and phosphorus element content in cobalt oxide

A cobalt oxide and content technology, applied in material excitation analysis, thermal excitation analysis, etc., can solve the problem of undetected phosphorus elements, and achieve the effects of fast measurement, low detection limit, and improved analysis efficiency

Active Publication Date: 2012-09-26
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the analytical methods for analyzing sodium in cobalt oxide include flame atomic absorption spectrometry for the determination of Na, Fe, Mn, Cu, Pb, Ca, Mg, Ni, and Zn elements in cobalt oxide, and classical spectroscopy for the determination of Fe, Mn, and Ni in cobalt oxide. , Ca, Na, As, Al, Mo, Cu, Cr, Si, Mg, Pb, Cd, Zn and other elements, X-ray fluorescence spectrometry (XRF) to determine Fe, Mn, Ni, Ca and other elements in cobalt oxide, inductance Coupled plasma emission spectrometry (ICP-AES) analysis of Fe, Ni, Mn, Cu, Co, Al, Bi, Ca, Mg, Pb, Si, Sn, Zn, Cd, Sb and other elements in cobalt oxide is useless There is no report on the analysis of sodium in cobalt oxide by inductively coupled plasma emission spectrometry (ICP-AES), but no report on the analysis of phosphorus in cobalt oxide

Method used

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  • Method for determining sodium and phosphorus element content in cobalt oxide
  • Method for determining sodium and phosphorus element content in cobalt oxide
  • Method for determining sodium and phosphorus element content in cobalt oxide

Examples

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Embodiment 1

[0040] Measure sodium and phosphorus elements in high-purity cobalt oxide, and measure them on the following instruments

[0041] Using JY ULTIMAIIC Inductively Coupled Plasma Emission Spectrometer, the working conditions and analysis lines of the instrument are as follows: incident power 1050W; reflected power: <10W; cooling air flow: 15L / min; sample lifting volume: 1.5mL / min; integration time: 5s; element analysis line: sodium 588.995nm; phosphorus 214.914nm.

[0042] (1) The reagents used in the determination process are as follows:

[0043] (1.1), hydrochloric acid, density about 1.19g / mL; superior grade or above;

[0044] (1.2) The mass-volume concentration of sodium standard solution I is 0.10mg / mL. The preparation method is to accurately weigh 0.1886g sodium chloride, whose mass fraction is not less than 99.95%, put it in a 100mL beaker, add water to dissolve it, and transfer it to 1000mL In a volumetric flask, dilute to the mark with water and shake well;

[0045] (...

Embodiment 2

[0065] Measure sodium and phosphorus elements in cobalt oxide, and measure them on the following instruments

[0066] Using JY ULTIMAIIC Inductively Coupled Plasma Emission Spectrometer, the working conditions and analysis lines of the instrument are as follows: incident power: 1150W; reflected power<10W; cooling air flow: 16L / min; sample lifting volume: 1.2mL / min; integration time: 2s; elemental analysis Lines: sodium 588.995nm; phosphorus 214.914nm.

[0067] (1) The reagents used in the determination process are as follows:

[0068] (1.1), hydrochloric acid, density about 1.19g / mL; superior grade or above;

[0069] (1.2) The mass-volume concentration of sodium standard solution I is 0.10mg / mL. The preparation method is to accurately weigh 0.1886g sodium chloride, whose mass fraction is not less than 99.95%, put it in a 100mL beaker, add water to dissolve it, and transfer it to 1000mL In a volumetric flask, dilute to the mark with water and shake well;

[0070] (1.3), the ...

Embodiment 3

[0090] Measure sodium and phosphorus elements in cobalt oxide, and measure them on the following instruments

[0091] Using JY ULTIMAIIC inductively coupled plasma emission spectrometer, the working conditions and analysis lines of the instrument are as follows: incident power 950W; reflected power <10W; cooling air flow rate 12L / min; sample lifting volume: 1.7mL / min; integration time: 10s; Elemental analysis line: sodium 588.995nm; phosphorus 214.914nm.

[0092] (1) The reagents used in the determination process are as follows:

[0093] (1.1), hydrochloric acid, density about 1.19g / mL; superior grade or above;

[0094] (1.2) The mass-volume concentration of sodium standard solution I is 0.10mg / mL. The preparation method is to accurately weigh 0.1886g sodium chloride, whose mass fraction is not less than 99.95%, put it in a 100mL beaker, add water to dissolve it, and transfer it to 1000mL In a volumetric flask, dilute to the mark with water and shake well;

[0095] (1.3), t...

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Abstract

A method is used for determining sodium and phosphorus element content in cobalt oxide, which can effectively dissolve a cobalt oxide sample, and have advantages such as fast sample-dissolving speed, high precision of analysis, convenient operation and high efficiency. An analytical spectral line for sodium at 588.995nm and an analytical spectral line for phosphorus at 214.914nm, which are selected in the method, are not interfered by matrix elements and coexistent elements in the cobalt oxide on a plurality of spectrum instruments. Therefore the method is appropriate for almost all kinds of inductively coupled plasma emission spectrometers. The measurement range of the method is wide, which the lowest measurement limit is 0.0001% and the highest measurement limit is 0.5%, can satisfy element analysis requirements of the sodium and the phosphorus element in the cobalt oxide.

Description

technical field [0001] The method is a method for determining the contents of sodium and phosphorus elements in cobalt oxide, and belongs to the technical field of alloy element analysis and measurement. Background technique [0002] Cobalt oxide is an important product in cobalt products. Cobalt oxide is mainly used in industrial sectors such as aerospace, cemented carbide, diamond tools, high-temperature alloys, electronics, metallurgy, machinery and energy. With the continuous improvement of cobalt oxide preparation technology, high-quality The purity of cobalt oxide is also increasing. The content of sodium and phosphorus elements in cobalt oxide has an important influence on the performance of cobalt oxide. [0003] At present, the analytical methods for analyzing sodium in cobalt oxide include flame atomic absorption spectrometry for the determination of Na, Fe, Mn, Cu, Pb, Ca, Mg, Ni, and Zn elements in cobalt oxide, and classical spectroscopy for the determination o...

Claims

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Application Information

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IPC IPC(8): G01N21/71
Inventor 李帆叶晓英
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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