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Copper ion rapid detection method and device

A detection method, copper ion technology, applied in the field of copper ion detection, can solve the problems of inability to realize rapid detection, long detection time, large-scale instruments, etc., and achieve the effects of improving detection timeliness, short reaction time, and low cost

Pending Publication Date: 2021-03-30
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The detection of copper content is of great significance to the fields of industrial sewage discharge, environmental detection, agricultural application, and food safety. At present, the common detection methods for copper content are: atomic absorption spectrophotometry, atomic absorption spectrometry, iodometric method, The above methods require operators to have a certain basis in analytical chemistry, and at the same time, the detection time is long, the cost is high, and large instruments are required, so rapid detection cannot be achieved.

Method used

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  • Copper ion rapid detection method and device
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  • Copper ion rapid detection method and device

Examples

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Effect test

Embodiment 1

[0031] A rapid detection method for copper ions, comprising the following steps:

[0032] (1) Preparation of chromogenic solution: prepare 10 mmol / L dicyclohexanone oxalyldihydrazone solution with absolute ethanol and deionized water with a mass ratio of 1:1;

[0033] (2) Substrate treatment: After placing the cotton in a sodium carbonate solution with a mass fraction of 10% at 80°C, take it out and dry it;

[0034] (3) Detector preparation: immerse the treated cotton cloth obtained in step (2) in the dicyclohexanone oxalyldihydrazone solution obtained in step (1), oscillate at a constant temperature, the time of oscillating at a constant temperature is 1 h, and the temperature is 30°C. Take it out and dry it in a cool place away from light, then cut it into small pieces of 0.8cm*0.6cm to get a detector, and put the detector in a cool and dry place for sealed storage;

[0035] (4) Preparation of standard color card: prepare copper ion solutions with concentrations of 4mg / L, 8...

Embodiment 2

[0040] A rapid detection method for copper ions, comprising the following steps:

[0041] (1) Preparation of chromogenic solution: prepare 9 mmol / L dicyclohexanone oxalyldihydrazone solution with absolute ethanol and deionized water with a mass ratio of 1:1;

[0042] (2) Substrate treatment: After placing the cotton in a sodium carbonate solution with a mass fraction of 10% at 85°C, take it out and dry it;

[0043] (3) Detector preparation: immerse the treated cotton cloth obtained in step (2) in the dicyclohexanone oxalyldihydrazone solution obtained in step (1), and oscillate at a constant temperature for 1.5 hours at a temperature of 25°C , take it out and dry it in a cool place away from light, cut it into small pieces of 0.8cm*0.6cm to obtain a detector, and place the detector in a cool and dry place for sealed storage;

[0044] (4) Preparation of standard color card: prepare copper ion solutions with concentrations of 4mg / L, 8mg / L, 12mg / L, and 16mg / L and a pH value of 9, ...

Embodiment 3

[0049] A rapid detection method for copper ions, comprising the following steps:

[0050] (1) Preparation of chromogenic solution: prepare 8 mmol / L dicyclohexanone oxalyldihydrazone solution with absolute ethanol and deionized water with a mass ratio of 1:1;

[0051] (2) Substrate treatment: After placing the cotton in a sodium carbonate solution with a mass fraction of 10% at 85°C, take it out and dry it;

[0052] (3) Detector preparation: immerse the treated cotton cloth obtained in step (2) in the dicyclohexanone oxalyldihydrazone solution obtained in step (1), and oscillate at a constant temperature for 1.5 hours at a temperature of 20°C , take it out and dry it in a cool place away from light, cut it into small pieces of 0.8cm*0.6cm to obtain a detector, and place the detector in a cool and dry place for sealed storage;

[0053] (4) Preparation of standard color card: prepare copper ion solutions with concentrations of 4mg / L, 8mg / L, 12mg / L, and 16mg / L and a pH value of 9...

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Abstract

The invention relates to a copper ion rapid detection method and device. The method comprises the following steps: preparing a chromogenic solution; treating a base material; preparing a detector; preparing a sample to be detected; dripping a sample to be detected on the detector, and comparing the color of the detector with the standard colorimetric card to obtain the concentration of the copperions in the sample to be detected. The invention also relates to a rapid copper ion detection device, a detector prepared by adopting the method for rapidly detecting the copper ions and a standard colorimetric card. The method provides convenient conditions for rapid detection of the concentration of copper ions, can semi-quantitatively detect the concentration of milligram-grade copper ions in ato-be-detected sample, can significantly improve the detection timeliness, does not need to prepare a detection solution separately on site, does not pollute the environment, is wide in test range, does not need professional personnel for test operation, and is short in reaction time. The stability is good, other solutions or equipment does not need to be carried, only the detector and the standard colorimetric card need to be carried, and the kit is suitable for field and on-site detection.

Description

technical field [0001] The invention relates to the technical field of copper ion detection, in particular to a rapid detection method and device for copper ions. Background technique [0002] Copper is one of the indispensable metal elements for the human body. In an adult body, the copper content in 1 kg of body weight is about 1.4mg to 2.1mg; the copper content in blood is about 1.0mg to 1.5mg. Copper is an important part of proteins and enzymes in the body, and many important enzymes require the participation and activation of trace copper. At the same time, copper is a heavy metal ion. Long-term intake of excessive copper-containing foods will increase the burden on the liver and gallbladder in the body, causing memory loss, inattention, and agitation. Therefore, it is important to control the intake of copper in the human body. very important. [0003] Copper is widely present in the industrial wastewater of electroplating plants, chemical plants, and printing and d...

Claims

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Application Information

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IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 张甜赵子懿蒋向阳廖雨潇张茜董香枝唐维杰皮埃尔梁钰陈振鹏
Owner WUHAN UNIV OF TECH
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