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Detecting device and method for contents of elements in solution

A detection device and a technology for element content, applied in the direction of electrical excitation analysis, material excitation analysis, etc., can solve the problems of inability to carry out multi-component or multi-element analysis, complex preprocessing procedures, and expensive instruments, and achieve simple and convenient detection methods. The effect of low cost and simple equipment

Inactive Publication Date: 2011-09-14
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0005] However, some of the above monitoring technologies for heavy metal pollution in the water environment are expensive, high operating costs, and not easy to carry; some sample pretreatment procedures are complicated; some cannot perform multi-component or multi-element analysis

Method used

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  • Detecting device and method for contents of elements in solution
  • Detecting device and method for contents of elements in solution
  • Detecting device and method for contents of elements in solution

Examples

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Comparison scheme
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Embodiment 1

[0038] 1% CuCl 2 High-voltage self-triggering fast-pulse discharge plasma spectroscopy of solutions.

[0039] This example uses CuCl 2 liquid samples. 1% CuCl was prepared with distilled water 2 solution. During the experiment, the electrode distance was 6.5mm, the discharge voltage was 10kV, and the discharge capacitance was 6nF. The prepared CuCl 2 Atomic Emission Spectroscopy of liquid samples, sending the resulting data to a computer for analysis.

[0040] Image 6 a is the recorded concentration of 1% CuCl 2The high-voltage self-triggering fast pulse discharge plasma spectrum of the solution in the spectral range of 322-329 nm, as a comparison, recorded the high-voltage self-triggering fast pulse discharge plasma spectrum when the sample was distilled water under the same conditions, as shown in Image 6 as shown in b. It can be seen that under the same discharge conditions, Image 6 There are very obvious Cu atomic lines in a, while Image 6 The corresponding ...

Embodiment 2

[0042] Concentration of 7.6% FeCl 3 High-voltage self-triggering fast-pulse discharge plasma spectroscopy of solutions.

[0043] Similar to Example 1, a concentration of 7.6% FeCl was prepared using distilled water 3 liquid samples. The electrode distance used in the experiment is 6.5mm, the discharge voltage is 11kV, and the discharge capacitance is 6nF. The prepared FeCl 3 Atomic Emission Spectroscopy of liquid samples, sending the resulting data to a computer for analysis.

[0044] Figure 7 a is the recorded concentration of 7.6% FeCl 3 High-voltage self-triggered fast-pulse discharge plasma spectroscopy of solutions, Figure 7 b High-voltage self-triggering fast-pulse discharge plasma spectra using distilled water. It can be found, Figure 7 There are very obvious Fe atomic lines in a, while Figure 7 Not in b.

[0045] The new high-voltage self-triggering fast pulse discharge plasma spectrum method of the present invention has good spectrum signal stability. I...

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Abstract

The invention belongs to the field of a detecting technique for the contents of elements in a solution and particularly relates to a detecting device and method for the content of the elements in the solution by utilizing a high-voltage self-triggering rapid-pulse discharge technique. The detecting device provided by the invention comprises a high-voltage discharge circuit, a liquid sample sampling system and a spectrum detecting system, wherein the high-voltage discharge circuit comprises a discharger which comprises two discharge electrodes; and the liquid sample sampling system comprises a liquid dropper which enables a liquid sample to periodically pass through the gap center between the two discharge electrodes of the discharger. In the invention, a high-voltage self-triggering rapid-pulse discharge plasma spectrometry is used under the premises that complicated equipment does not need to be massively increased and the operation is simple; the heavy metal elements in the liquid are convenient to detect; spectrum signals have good stability; and the method has the potential important application value in the actual detection of water body heavy metal elements.

Description

technical field [0001] The invention belongs to the technical field of element content detection in solution, in particular to a detection device and method for element content in solution using high-voltage self-triggering fast pulse discharge technology. Background technique [0002] Highly sensitive detection of harmful heavy metal elements in water has long been the focus of attention. At present, the technologies used in the monitoring of heavy metal pollution in the water environment include atomic absorption spectrometry (AAS), inductively coupled plasma emission spectrometry (ICP / AES), mass spectrometry (ICP / MS), electrochemical analysis, and biological monitoring. [0003] Laser-Induced Breakdown Spectroscopy (LIBS) has attracted much attention because of its fast and real-time analysis. This technology uses laser to excite plasma, and detects the content and concentration of elements in it by recording and analyzing laser plasma emission spectrum. At present, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/67
CPCG01N21/67G01N21/69
Inventor 周卫东李霞芬李科学钱惠国
Owner ZHEJIANG NORMAL UNIVERSITY
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