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Determination device of hexavalent chromium in water sample based on microfluidic reaction system and determination method thereof

A technology of a micro-reaction system and a measuring device, applied in the field of detection, can solve the problems of long analysis time, high cost, and large pollution, and achieve the effects of simple operation, low cost, and accurate quantification.

Inactive Publication Date: 2016-04-27
CHINA JILIANG UNIV
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Problems solved by technology

However, the chemical chromogenic method wastes a lot of reagents, causes a lot of pollution, and takes a long time to analyze; AAS, IC, ICP-MS and other methods have relatively high requirements for equipment and high cost; while the sensor method is fast and efficient, but the analysis accuracy is relatively low

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  • Determination device of hexavalent chromium in water sample based on microfluidic reaction system and determination method thereof
  • Determination device of hexavalent chromium in water sample based on microfluidic reaction system and determination method thereof
  • Determination device of hexavalent chromium in water sample based on microfluidic reaction system and determination method thereof

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Embodiment Construction

[0031] For the convenience of those skilled in the art to understand, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0032] Such as figure 1 As shown, the device for measuring hexavalent chromium in water samples based on the flow micro-reaction system includes a sampling device 1, a reaction device 2 and a detection device 3 connected in sequence, and the peristaltic pump 4 of the sampling device 1 pushes the syringe 5 and the detection device 3 respectively. The solution in the syringe 6 enters the reaction device 2, and the microfluidic chip 9 of the reaction device 2 connects with the standard sample or water sample syringe 5 and the developer through the standard sample or water sample connecting tube 7 and the chromogenic reagent connecting tube 8 respectively. Color agent injector 6 is connected, and described standard sample or water sample syringe 5 is connected with standard sample or w...

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Abstract

The invention discloses a determination device of hexavalent chromium in a water sample based on a microfluidic reaction system. The device of the invention comprises a sampling device, a reaction device and a detection device which are connected in order. The sampling device comprises a peristaltic pump and two injectors respectively communicated with the reaction device. The reaction device comprises a micro-fluidic chip, a defoaming device and a connecting pipe. The micro-fluidic chip is connected to a flow-through cell in the detection device. The detection device comprises the flow-through cell, a light source, a portable spectrometer, a light through hole and a waste liquid bottle. Light emitted from the light source and a light inlet hole and a light outlet hole of the flow-through cell are on a straight line. Meanwhile, the invention also provides a determination device of hexavalent chromium in a water sample based on the microfluidic reaction system. Detection operation is simplified, use of experiment reagents is reduced, and measurement time is shortened.

Description

technical field [0001] The invention relates to detection technology, in particular to a device and method for measuring hexavalent chromium in water samples based on a flow micro-reaction system. Background technique [0002] Chromium is a trace element required for life and health of mammals, lack of chromium can cause atherosclerosis. However, chromium ions in chromium compounds are extremely toxic, especially hexavalent chromium, which is extremely harmful and is more easily absorbed by the human body and accumulates in the body. Its toxicity is 100 times stronger than that of trivalent chromium, and it is carcinogenic. [0003] With the intensification of human activities, more and more heavy metals have entered into environmental media such as water, soil, and atmosphere in the form of bioavailable states. After accumulating in the human body, it can lead to various chronic diseases such as cancer, and cause nervous system disorders. For example, hexavalent chromium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/78
CPCG01N21/3103G01N21/78
Inventor 钱程张明穆金霞邓黛青
Owner CHINA JILIANG UNIV
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