Method for quickly and qualitatively detecting whether packing material contains copper or not

A qualitative detection and packaging technology, which is applied in the direction of material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, can solve the problems of low control rate of copper ions, damage to packaging, and waste of sample delivery. In order to achieve the effect of simple and easy-to-operate analysis methods, reduce damage, save manpower and detection costs

Inactive Publication Date: 2020-10-30
TIANJIN MAOLIAN SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current methods for detecting magnesium and copper are sampling, digestion, and detection by inductively coupled plasma emission spectrometer. The process is relatively complicated, and the whole detection process is sometimes long and inefficient. The control rate is low; and the samples need to be transported and inspected back and forth, which will inevitably damage the packaging during the handling process. The inspection of the packaging is a destructive inspection, which wastes the manpower of sample inspection and increases the cost of sample inspection.

Method used

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  • Method for quickly and qualitatively detecting whether packing material contains copper or not
  • Method for quickly and qualitatively detecting whether packing material contains copper or not
  • Method for quickly and qualitatively detecting whether packing material contains copper or not

Examples

Experimental program
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Embodiment 1

[0019] A rapid qualitative detection method for whether copper is contained in a package is characterized in that:

[0020] The first step: configure the color developing solution, by accurately weighing 0.4000 g of dicyclohexanone oxalyl bishydrazone, dissolving it in 150 mL of absolute ethanol, stirring and dissolving in a constant temperature water bath at 60°C, and cooling to form a color developing solution. Transfer the color developing solution into a 200mL volumetric flask, add absolute ethanol to make the volume up to the 200mL scale line;

[0021] Step 2: Configure the buffer solution. Dissolve 60.00g of ammonium acetate and 10.00g of sodium acetate in 150mL of hot water by accurately weighing, stir to dissolve, and cool to form a buffer solution. Transfer the buffer solution into a 200mL volumetric flask and add Constant volume of resin water to 200mL scale line;

[0022] The third step: mix the color developing solution and the buffer solution in a volume ratio of 1:1 to...

Embodiment 2

[0026] The present invention first sets a blank control: drip 3 to 4 drops of the mixed reagent on a clean dust-free cloth. After 20 seconds, the area to be dripped can be used as a blank control, such as figure 2 As shown; compared with the blank control, after vigorously wiping the test object with a dust-free cloth, drop 3 to 4 drops of the mixed reagent on the dust-free cloth and wipe the part vigorously. If the dust-free cloth wipes the part strongly within 20 seconds, blue Color, it means the surface of the tested part contains copper, such as image 3 As shown; if there is no blue appearance on the part when the dust-free cloth is wiped strongly within 20 seconds, it means that the surface of the tested part does not contain copper; if the individual points on the part where the dust-free cloth is wiped strongly within 20 seconds, slight blue spots appear, It means that there is slight copper pollution on the surface of the tested part, such as Figure 4 Shown

[0027] Th...

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Abstract

The invention provides a rapid detection method which is rapid in process, simple in steps, simple and convenient to operate and capable of rapidly judging whether a packaged object contains copper ornot. The aim is fulfilled by the following scheme: the original methods of sampling, digesting and instrument detection by production workers are abandoned, and whether copper is contained or not isjudged according to the color development condition after the color development is performed by wiping the packaged dust-free cloth. And meanwhile, the inspection, analysis and test time is greatly shortened. The detection method is mainly used for innovating qualitative detection on whether magnesium is contained or not through the color development degree.

Description

Technical field [0001] The invention relates to the field of chemical detection of non-ferrous metals, in particular to a rapid qualitative detection method for whether copper is contained in a package. Background technique [0002] With the rapid development of new energy vehicles in recent years, ternary materials have played an increasingly important role. Foreign companies like Tesla and Samsung have generally adopted ternary materials as cathode materials for lithium batteries because their technology is three to five years ahead of us. So in the future, there is still much room for improvement in ternary materials. [0003] Currently in the field of lithium batteries, ternary materials are mainly composed of polymers of nickel, cobalt and manganese. The ratio of the three elements of nickel, cobalt and manganese in the material is not certain. We can improve the performance of the battery by changing the ratio of the three elements . As the requirements for ternary materia...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 田桂舫
Owner TIANJIN MAOLIAN SCI & TECH
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