Fast analyzer for nondestructive measuring heavy metal cadmium in foods and analyzing method

A rapid analysis, heavy metal technology, applied in the direction of analyzing materials, using wave/particle radiation for material analysis, instruments, etc., can solve the problems of large analytical instruments, high environmental requirements, long time consumption, etc., and achieves mature technology and high detection. Efficiency and energy resolution, the effect of high integration

Active Publication Date: 2014-05-28
钢研纳克江苏检测技术研究院有限公司
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  • Description
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Problems solved by technology

[0005] The problems of the above method are: 1) The sample needs complicated pretreatment, which is cumbersome to operate and takes a long time; 2) The analytical instrument is huge and has high requirements for the use environment; 3) The analysis process requires auxiliary equipment such as water and gas and Conditional support; 4) It cannot meet the needs of real-time emergency rapid detection on site
Carbonization and ashing processing increase the complexity and time of detection, and the different processing effects of different samples will affect the measurement results, which is inconvenient to promote and apply in the field of summer grain purchase and granary

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  • Fast analyzer for nondestructive measuring heavy metal cadmium in foods and analyzing method
  • Fast analyzer for nondestructive measuring heavy metal cadmium in foods and analyzing method
  • Fast analyzer for nondestructive measuring heavy metal cadmium in foods and analyzing method

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Embodiment Construction

[0083] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0084] Enforcement of the present invention must apply energy dispersive X-ray fluorescence analysis device, and this device is made of high-power 20~500W X-ray light tube 2, SDD detector 4, high-power negative high-voltage power supply 5, high-voltage cable 6, DC stabilized voltage power supply 7 , cooling fan 8, main power switch 11, negative high-voltage power switch 12, and high-voltage power supply dedicated communication control line 13.

[0085] Analyzer signal transmission uses USB data line 9, high-voltage power supply special-purpose communication control line 13 to be connected with computer 10, calculates and outputs the concentration of Cd element in sample 3 through the data processing module of computer 10 software, simultaneously the software system of computer 10 will be to each The volta...

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Abstract

The invention relates to a fast analyzer for nondestructive measuring heavy metal cadmium in foods and an analyzing method, and belongs to the technical field of food safety detection. The fast analyzer comprises an X-ray fluorescence analysis mechanism, an analyzer case, a specimen cup and an intelligent controlling mechanism. The analyzing method comprises the following steps: specimens are put into the specimen cup, and the specimen cup is put into the detection hole of the analyzer case; the X-ray fluorescence analysis mechanism is adopted to measure; the content of cadmium in the specimens is calculated by the intelligent controlling mechanism; the X-ray fluorescence analysis mechanism is an X-ray fluorescence analysis mechanism with high power energy dispersion; the specimens are powdery or granular specimens without chemical digestion or enrichment pretreatment. According to the invention, the fast analyzer has the following advantage: the pretreatment is not needed to be carried out on food specimens, the purpose that the heavy metal cadmium in the food specimens is detected can be realized; the fast analyzer has the characteristics of non-destruction, directness, rapidness, high sensitivity, convenience for field measurement and the like.

Description

technical field [0001] The invention belongs to the technical field of analysis and detection of heavy metal cadmium in food. The invention provides a fast analyzer and analysis method for nondestructively measuring heavy metal cadmium in food, which can quickly and accurately measure the content of cadmium in food, so as to determine whether the cadmium content exceeds National standard. Background technique [0002] Cadmium, CADMIUM, chemical symbol Cd, melting point 320.9°C, boiling point 765°C, atomic number 48, cadmium is highly toxic and can cause human poisoning, including carcinogenicity, kidney failure, bone pain, etc. Prevention and reduction of cadmium poisoning are of great significance . [0003] Studies have shown that some edible plants and edible fungi have relatively strong absorption and enrichment effects on heavy metals, and rice is the bulk cereal crop that has the strongest absorption of cadmium. Generally, rice with excessive cadmium content is commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223
Inventor 陈永彦刘明博廖学亮韩鹏程袁良经杨植岗程大伟
Owner 钢研纳克江苏检测技术研究院有限公司
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