Device and method for the detection of heavy metal elements

A technology for heavy metals and elements, which is applied in the field of devices combined with a hydride generator and a liquid cathode glow discharge spectrometer, can solve the problems that toxic heavy metal elements do not have good universality, cannot fully satisfy environmental monitoring, and are cumbersome in process. To achieve the effect of simplifying the pretreatment process, easy to implement, and concise operation steps

Active Publication Date: 2016-08-10
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI +1
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Problems solved by technology

However, there are still two problems: on the one hand, the improvement of sensitivity is limited, and it only has a good effect on some elements, but it does not have good universality on many toxic and heavy metal elements, and it cannot fully meet the needs

Method used

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  • Device and method for the detection of heavy metal elements
  • Device and method for the detection of heavy metal elements
  • Device and method for the detection of heavy metal elements

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Embodiment Construction

[0035] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the following embodiments are only used to illustrate the present invention rather than limit the present invention.

[0036] figure 1 It is a structural schematic diagram of a device for combining a hydride generator for detecting heavy metal elements with a liquid cathode glow discharge emission spectrometer according to an embodiment of the present invention.

[0037] Such as figure 1 As shown, the device for combining the hydride generator and the liquid cathode glow discharge spectrometer for the detection of heavy metal elements includes a hydride generator 17, a combined instrument interface unit and a liquid cathode glow discharge spectrometer unit.

[0038] The liquid cathode glow discharge spectrometer unit may include four parts: a light source generating part, a spectroscopic system, a detection device, an...

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Abstract

The invention relates to a device and a method for the detection of heavy metal elements. The device comprises a hydride generator unit, a liquid negative electrode glow discharge spectrometer unit and a connection unit connected to the hydride generator unit and the liquid negative electrode glow discharge spectrometer unit. The hydride generator unit makes a sample to be measured generate heavy metal hydride to be measured ; the heavy metal hydride to be measured generated by the hydride generator unit is transported to a positive electrode of a hollow titanium tube via the connection unit, and is lead from the positive electrode of the titanium tube to a glow discharge microplasma, and is excited to generate a characteristic emission spectrum. The device has simple structure, the method is convenient for operation and low in cost, and can conveniently, timely detect heavy metal elements and improve the sensitivity and selectivity to heavy metal elements.

Description

technical field [0001] The invention belongs to the field of atomic spectrum analysis, and relates to a device and method for detecting heavy metal elements, more specifically, to a device for combining a hydride generator and a liquid cathode glow discharge spectrometer for detecting heavy metal elements and Detection method. Background technique [0002] The traditional metal ion detection methods based on spectroscopic techniques mainly include atomic absorption spectrometry and atomic emission spectrometry. Commonly used detection instruments in these methods include flame atomic absorption spectrometer, inductively coupled plasma emission spectrometer and so on. However, these commonly used detection instruments are bulky, expensive, and the detection cost is high, so they are difficult to be used for field analysis and monitoring. With the development of science and technology and the improvement of detection level, people began to study simple, fast and low-cost met...

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Application Information

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IPC IPC(8): G01N21/67
CPCG01N21/67G01N21/69
Inventor 汪正黄楚楚李青莫家媚
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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