Intelligent general type mercury measuring device and detection method thereof

A detection method and a general-purpose technology, applied in the field of analytical instruments, can solve the problems of being unable to meet the rapid, efficient and sensitive detection requirements of actual samples, poor versatility, and expensive equipment, and achieve low detection limits, strong instrument versatility, low cost effect

Active Publication Date: 2012-05-09
西安西北有色地质研究院有限公司
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Problems solved by technology

[0003] At present, the determination of total mercury in samples in the fields of food safety and environmental protection is very concerned at home and abroad, and various special mercury measuring instruments have appeared, but these instruments have shortcomings such as single performance, poor versatilit

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  • Intelligent general type mercury measuring device and detection method thereof
  • Intelligent general type mercury measuring device and detection method thereof
  • Intelligent general type mercury measuring device and detection method thereof

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Embodiment Construction

[0023] figure 1 The overall structure of the mercury measuring device of the present invention is shown, which is composed of a sample processing device 1, a four-way valve 11, a first three-way valve 2, a second three-way valve 4, a mercury enrichment device 3, an excitation light source 5, Absorption cell 6, photoelectric detector 7, control four-way valve 11, the first three-way valve 2, the second three-way valve 4 and photoelectric detector 7 by computer 8; Described four-way valve 11 selects different according to different samples connected to the sample processing device 1, through the first three-way valve 2 and the second three-way valve 4 to control whether the target gas enters the mercury enrichment device 3, finally enters the absorption cell 6, and is detected by the photodetector 7.

[0024] The sample processing device 1 includes a solid sample injector 111, a liquid sample injector 121 and a gas sample injector 131. Whether it is a solid sample, a liquid samp...

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Abstract

The invention discloses an intelligent general type mercury measuring device and a detecting method of the intelligent general type mercury measuring device, three interfaces of a four-way valve (11) are respectively communicated with a solid, liquid and gas sample treatment devices (1), target gas output by the four-way valve enters into a mercury enrichment device (3) through a first three-way valve (2),the output end of the mercury enrichment device is communicated with the interface of a second three-way valve (4), the gas enters into an absorption pool (6) and is detected by a photoelectric detector (7); The three-way valve, the four-way valve, the absorption pool, the photoelectric detector and an excitation light source are controlled by a computer (8). The intelligent general typemercury measuring device is an opto-electro-mechanical integrated analysis device and measures the content of mercury by utilizing the mercury enrichment device and the atomic fluorescence technology, overcomes the disadvantage that only a single sample can be measured, can directly measure the solid sample, the liquid sample and the gas sample on the same device and can perform form analysis of mercury in the liquid sample and the gas sample, the intelligent general type mercury measuring device has high universality, high sensitivity, low detection limit and is simple in structure and is low in cost.

Description

technical field [0001] The invention relates to an analytical instrument used in the field of analytical chemistry to measure mercury based on the principle of atomic fluorescence and analytical techniques, especially without the use of complex chemical pretreatment processes, it can directly measure different types of samples, and can perform An intelligent general-purpose mercury measuring device and a detection method for speciation analysis of mercury in liquid and gas samples. Background technique [0002] Due to human factors such as human production and living activities, mercury exists widely in the atmosphere, soil, water, food and other fields, such as chemical industry, smelting industry, electronics industry, mercury thermometer manufacturing industry and fluorescent lamp factory, etc. are the main sources of mercury. In addition, irrigation of soil with sewage, fertilization of sludge, and use of mercury-containing pesticides can all cause man-made mercury pollu...

Claims

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Application Information

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IPC IPC(8): G01N21/64G01N1/34G01N1/44
CPCG01N21/6404
Inventor 李日升郭跃安杨晓明冯玉怀李中玺
Owner 西安西北有色地质研究院有限公司
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