A portable rapid detection device for heavy metal content

A detection device and heavy metal technology, which is applied in the field of portable heavy metal content rapid detection device, can solve the problems of light intensity compensation error, unstable beam splitter, unstable light splitting ratio, etc., achieve low power consumption, short detection time, and avoid effect of error

Active Publication Date: 2021-05-07
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] However, the above-mentioned patent uses a beam splitter to divide the laser beam into two beams. One beam irradiates the photoacoustic cell to generate an acoustic signal, and the other beam irradiates the photoelectric sensor to measure the light intensity. Cause light intensity compensation error

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  • A portable rapid detection device for heavy metal content
  • A portable rapid detection device for heavy metal content
  • A portable rapid detection device for heavy metal content

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Embodiment Construction

[0048] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0049] figure 1 It is a schematic composition diagram of a portable rapid detection device for heavy metal content in a preferred embodiment of the present invention.

[0050] refer to figure 1 As shown, in the portable heavy metal content rapid detection device in this preferred embodiment, the control module adopts a computer, and the data acquisition module adopts a data acquisition card. Specifically, the detection device includes: a laser 1, a focusing lens group 3, a photoacoustic cell 4, ...

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Abstract

The invention provides a portable rapid detection device for heavy metal content, comprising: a laser, a focusing mirror group, a photoacoustic pool, an acoustic sensor, a photoelectric sensor, a data acquisition module, a control module, an electric pump, and a liquid storage pool. The control module controls the electric pump to take an appropriate amount of nano-gold and the liquid to be tested from the liquid tank into the photoacoustic cell, and the laser beam projected into the photoacoustic cell irradiates the mixed liquid inside the photoacoustic cell, and the mixed liquid is excited to generate an acoustic signal ; The acoustic signal is acquired by the acoustic sensor and converted into an electrical signal, which is sent to the data acquisition card for data acquisition after passing through the amplifier, and the data is processed by the computer to display the value of the heavy metal content to be measured. The invention is convenient to carry, the operation can be automatically controlled, and the high-precision and rapid detection of the heavy metal content in the liquid can be realized.

Description

technical field [0001] The invention relates to a heavy metal detection device, in particular to a portable rapid detection device for heavy metal content, especially a portable rapid detection device for heavy metal content based on nano-gold particles enhanced photoacoustic effect. Background technique [0002] In recent years, environmental pollution caused by excessive discharge of heavy metals has attracted great attention from the whole society. Heavy metals are extremely cytotoxic, corrosive, and carcinogenic to biological systems, and cannot be degraded in the environment, resulting in the accumulation and expansion of heavy metal elements in the biological chain, and eventually cause chronic poisoning after human consumption. In the industrial production of chemical, pharmaceutical, food and other industries, the content of heavy metals must be strictly limited, and accurate detection of heavy metal content is required. [0003] Traditional detection methods for he...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/17
CPCG01N21/1702
Inventor 赵辉陶卫吕娜何巧芝王倩
Owner SHANGHAI JIAO TONG UNIV
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