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A method and application of icp-aes detection element
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An ICP-AES technology for detecting elements, which is applied in the detection of metal elements in ferroalloys or refractory materials, steel, and the field of ICP-AES detection of elements, can solve the problems of inability to detect high-content metal elements, etc., and achieve fast detection and easy operation Effect
Active Publication Date: 2019-11-15
PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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[0003] The purpose of the present invention is to provide a method for detecting elements by ICP-AES and its application in order to overcome the defect that the ICP-AES method in the prior art cannot detect high-content metal elements
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Embodiment 1
[0039] This embodiment is used to illustrate the method and application of ICP-AES for detecting elements.
[0040] When detecting the percentage of copper in monelK500, the preparation method of sample and standard solution is as follows:
[0041] Weigh 0.4012g and 0.4021g of 351-1242monelK500 sample; weigh 0.4008g and 0.4028g of 351-1243monelK500 sample into four 500ml volumetric flasks, and weigh high-purity copper (99.999%) 0g, 0.0815g, 0.1023g, 0.1216g, 0.1425g, and 0.1613g were put into six 500ml volumetric flasks respectively, 30ml nitric acid (ρ=1.42mg / ml) was added, 5ml hydrochloric acid (ρ=1.19mg / ml), heat until the sample is completely decomposed, cool to room temperature, accurately dilute to the mark with water, and mix well.
[0042] Taking a 0.1000g sample as a benchmark, the percentage of copper in the prepared standard samples were 0, 81.5%, 102.3%, 121.6%, 142.5%, 161.3%; then on the PE5300ICP equipment, select the power of 1300 watts, plasma The body gas flow ra...
Embodiment 2
[0051] This embodiment is used to illustrate the method and application of ICP-AES for detecting elements.
[0052] When detecting the percentage of molybdenum in GH536, the preparation method of sample and standard solution is as follows:
[0053] Weigh 0.1314g of 351-0745GH536 sample and 0.1327g of 351-0746GH536 sample in two 300ml Erlenmeyer flasks respectively, and weigh A38GH334 standard sample (molybdenum percentage 9.01) 0g, 0.1012g, 0.1206g, 0.1325 g, 0.1407g and 0.1545g were put into six 300ml Erlenmeyer flasks respectively, add 10ml nitric acid (ρ=1.42mg / ml), add 120ml hydrochloric acid (ρ=1.19mg / ml), and heat until the sample is completely decomposed. Then add 10.0 ml of sulfuric acid and phosphorus mixed acid (sulfuric acid (ρ=1.42mg / ml) and phosphoric acid (ρ=1.69mg / ml) in a volume ratio of 1:2), mix well, heat until sulfuric acid fumes, and cool to room temperature , Add 30 ml of water, mix well, heat to boiling, cool to room temperature, accurately dilute to 250.00 ...
example 2
[0059] The conventional classical thiocyanate spectrophotometry was used to detect the percentage of Mo in sample 1 (351-0745GH536) and sample 2 (351-0746GH536) of Example 2 respectively, which were 9.00% and 9.05%, respectively.
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Abstract
The invention relates to the field of element detection, and discloses a method for detecting elements through ICP-AES and application of the method. The method comprises the steps that a standard curve is made, wherein the standard curve shows a corresponding relation between the content of a to-be-detected element and the strength of emitting a characteristic spectral line; the strength, emitting the characteristic spectral line, of the m standard sample is detected, and the ratio km of a standard value and detection value of the to-be-detected element is calculated; the strength, emitting the characteristic spectral line, of a sample with the mass of m' is detected, and the content y[detection] of the to-be-detected element of a sample corresponding to the strength of emitting the characteristic spectral line on the standard curve is obtained; the strength, emitting the characteristic spectral line, of the n standard sample is detected, and the ratio kn of the standard value and detection value of the to-be-detected element is calculated; the finial value x of the sample content is calculated according to a formula (1) defined in the description. The invention further relates to the application of the method in detection of steel or iron alloy or refractory material elements. The detection method has the advantages of being easy and convenient to operate and rapid in detection.
Description
Technical field [0001] The present invention relates to the field of element detection, in particular to an ICP-AES method for detecting elements, and the application of the method in the detection of metal elements in steel, iron alloys or refractory materials. Background technique [0002] The existing ICP-AES detection method is to first use the standard sample or standard solution to determine the working curve under the selected parameter conditions, and then use the quality control sample to check the working curve. When proofreading, use the measured working curve to check the quality control results and When the quality control standard results are similar, the instrument is stable, and the working curve is used to directly detect the sample results. When the measured working curve is used to test the quality control result and the quality control standard result is quite different, the working curve needs to be measured again. However, when using the ICP-AES method to d...
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Application Information
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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/73
CPCG01N21/73
Inventor 杨道兴
Owner PANGANG GROUP JIANGYOU CHANGCHENG SPECIAL STEEL
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