Method for rapidly determining aluminum species in dried beancurd sticks by adopting X-ray fluorescence spectrometer

A fluorescence spectrometer and rapid measurement technology, which is applied in instruments, measuring devices, scientific instruments, etc., can solve the problems of inability to meet the rapid detection of large-scale export yuba, easy to change the form of metal elements, and lengthy analysis process, so as to shorten the detection time, Detect quick, easy-to-use effects

Inactive Publication Date: 2015-08-26
中华人民共和国防城港出入境检验检疫局
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Problems solved by technology

[0003] At present, the analysis of aluminum speciation in food mainly adopts chemical analysis technology, which has the disadvantages of complicated operation, lengthy analysis process, the need to use toxic chemical reagents, and the shape of metal elements is easily changed during the sample pretreatment process, which cannot meet the requirements of large quantities. The requirements for the rapid detection of export bean curd sticks, so it is necessary to establish a simple and fast new method for aluminum speciation analysis

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  • Method for rapidly determining aluminum species in dried beancurd sticks by adopting X-ray fluorescence spectrometer
  • Method for rapidly determining aluminum species in dried beancurd sticks by adopting X-ray fluorescence spectrometer

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] The first step is to select and prepare aluminum-containing standard samples.

[0018] Aluminum powder (high purity, inorganic aluminum), Al 2 o 3 (Analytical pure, inorganic aluminum), Al(OH) 3 (Analytical pure, inorganic aluminum), potassium aluminum sulfate AlK(SO 4 ) 2 12H 2 O (analytical pure, inorganic aluminum), sodium aluminate NaAlO 2 (chemically pure, inorganic aluminum), aluminum distearate C 36 h 71 AlO 5 (analytical pure, organic aluminum), aluminum isopropoxide C 9 h 21 AlO 3 (chemically pure, organic aluminum), aluminum glycinate C 2 h 6 AlNO 4 (Analytical pure, organic aluminum) as a standard sample. Grind the standard sample into a 200-mesh uniform powder in an agate mortar, take an appropriate amount of powder and put it into the mold of the tablet machine, use boric acid as the bottom, keep it under a pressur...

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Abstract

The invention discloses a method for rapidly determining aluminum species in dried beancurd sticks by adopting an X-ray fluorescence spectrometer. According to the method, the 2theta value of the position of an AlK alpha second-order diffracted ray spectrum peak in each standard sample with known aluminum species is determined by the X-ray fluorescence spectrometer and taken as the basis for analysis of the aluminum species, a determined 2theta value of the position of an AlK alpha second-order diffracted ray spectrum peak in a dried beancurd stick sample is compared with the the position 2theta value of the second-order diffracted ray spectrum peak of AlKalpha in each standard sample, and the aluminum species in the dried beancurd sticks are determined. The method has the advantages of simple and rapid operation, accurate determination and capability of meeting the requirement for rapid detection of massive output dried beancurd sticks.

Description

technical field [0001] The invention belongs to the technical field of analysis and measurement methods, in particular to a method for quickly measuring the form of aluminum in bean curd sticks by using X-ray fluorescence spectroscopy (XRF). Background technique [0002] Aluminum is a trace element with low toxicity in terms of toxicology, but after entering human cells, it can combine with various proteins, enzymes, adenosine triphosphate and other important substances, accumulate in the human body and produce chronic toxicity, interfere with the normal metabolism of cells and organs, and disturb the central nervous system. Nerves, causing osteoporosis, digestive disorders and Alzheimer's disease and other problems. The World Health Organization (WTO) and the World Food and Agriculture Organization (FAO) formally identified aluminum as a food pollutant for control in 1989. Yuba is a traditional food in China, and its export volume is huge. Therefore, the aluminum content i...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/223
Inventor 唐梦奇田继军
Owner 中华人民共和国防城港出入境检验检疫局
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