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Method for detecting qualification of to-be-detected product

A technology for qualified products and samples, which is applied in the field of testing whether the product to be tested is qualified or not, can solve problems such as affecting detection efficiency and time-consuming detection efficiency, and achieve the effects of improving detection efficiency, accuracy and limit concentration.

Inactive Publication Date: 2014-09-03
宜特科技(昆山)电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When it is necessary to conduct qualitative and quantitative detection of the chemical composition to know whether the test object is a qualified product, it is necessary to test each index to be tested one by one, so as to refer to the standard to know whether the test object is qualified or not. Such direct detection When the method encounters many indicators to be tested, the detection efficiency will be more time-consuming, which affects the detection efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First, five samples were taken for each of the sample to be tested and the standard sample to obtain five groups of samples to be tested and five groups of standard samples. Then, randomly take three groups of standard samples and three groups of samples to be tested, and use the mixed acid consisting of concentrated nitric acid and concentrated hydrochloric acid with a volume ratio of 1:2 for the three groups of standard samples, and concentrated hydrochloric acid with a volume ratio of 2:1. After the mixed acid composed of nitric acid and concentrated hydrochloric acid and the mixed acid composed of concentrated nitric acid, concentrated hydrochloric acid and concentrated hydrofluoric acid with a volume ratio of 8:2:1 were treated, ICP-OES was used to measure the standard sample ICP data. At the same time, the three groups of samples to be tested were respectively treated with the above three mixed acids, and then measured by ICP-OES to obtain the ICP data of the sampl...

Embodiment 2

[0023] In this example, the three kinds of mixed acids are the mixed acid composed of concentrated nitric acid and concentrated hydrochloric acid with a volume ratio of 1:4, the mixed acid composed of concentrated nitric acid and concentrated hydrochloric acid with a volume ratio of 4:1, and the mixed acid composed of concentrated nitric acid and concentrated hydrochloric acid with a volume ratio of 4:1. 10:4:1 mixed acid composed of concentrated nitric acid, concentrated hydrochloric acid, and concentrated hydrofluoric acid; the extraction conditions of the four organic solvents are as follows: the temperature of toluene extraction is 125°C, and the time of toluene extraction is 1.5h. The amount of toluene in the extract is 65ml, the temperature of n-hexane extraction is 85°C, the time of n-hexane extraction is 2.5h, the amount of n-hexane per 3g of the extract is 55ml, the temperature of acetone extraction is 55°C, and the time of acetone extraction 0.5h, the amount of aceton...

Embodiment 3

[0025] In this example, the three mixed acids are the mixed acid composed of concentrated nitric acid and concentrated hydrochloric acid with a volume ratio of 1:3, the mixed acid composed of concentrated nitric acid and concentrated hydrochloric acid with a volume ratio of 3:1, and the mixed acid composed of concentrated nitric acid and concentrated hydrochloric acid with a volume ratio of 3:1. 9:3:1 mixed acid composed of concentrated nitric acid, concentrated hydrochloric acid, and concentrated hydrofluoric acid; the extraction conditions of the four organic solvents are as follows: the temperature of toluene extraction is 120°C, and the time of toluene extraction is 2h. The amount of toluene in the extract is 60ml, the temperature of n-hexane extraction is 70°C, the time of n-hexane extraction is 3h, the amount of n-hexane per 2.5g of the extract to be extracted is 60ml, the temperature of acetone extraction is 50°C, and the time of acetone extraction For 1h, the amount of ...

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Abstract

The invention discloses a method for detecting the qualification of a to-be-detected product. According to the method, the to-be-detected product and a standard product are respectively detected by virtue of an ICP-OES (Inductively Coupled Plasma Optical Emission Spectroscopy), a GCMS (Gas Chromatography Mass Spectrometry) and an FTIR (Fourier Transform Infrared Spectroscopy), detection data of the to-be-detected product and the standard product are compared, and then the qualification of the to-be-detected product can be rapidly determined according to the differences, so that the detection efficiency is improved; besides, before the detection of the to-be-detected product and the standard product, the to-be-detected product and the standard product are respectively subjected to specific treatment including mixed acid treatment and extraction, so that the limiting concentration of the detection is greatly increased, and then the detection accuracy is greatly improved.

Description

technical field [0001] The invention relates to the technical field of substance detection and identification, in particular to a method for detecting whether a product to be tested is a qualified product. Background technique [0002] At present, the detection of the chemical composition of the product to be tested is mainly based on physical verification, that is, the main use of equipment such as EDS, X-ray, etc. to directly detect the type and content of the specific chemical composition or element. The detection limit of this method is about 1% to 0.5%. If the concentration of the target detection component is too low, no signal will be detected by these devices. When it is necessary to conduct qualitative and quantitative detection of the chemical composition to know whether the test object is a qualified product, it is necessary to test each index to be tested one by one, so as to refer to the standard to know whether the test object is qualified or not. Such direct ...

Claims

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Application Information

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IPC IPC(8): G01N21/73G01N30/02G01N21/35
Inventor 郑远泰陈庆宏张永涛
Owner 宜特科技(昆山)电子有限公司