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Separation measurement method for mercury elements with different valences in bolete

A method of determination, technology of boletus, applied in the direction of material separation, measuring device, analysis material, etc.

Inactive Publication Date: 2018-02-23
CHECKOUT & QUARANTINE TECH CENT YUNNAN ENTRY &EXIT CHECKOUT & QUARANTINE BUR
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no research on the analysis method of different valence states of mercury in boletus or boletus products established by HPLC-ICP-MS

Method used

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  • Separation measurement method for mercury elements with different valences in bolete
  • Separation measurement method for mercury elements with different valences in bolete
  • Separation measurement method for mercury elements with different valences in bolete

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Embodiment Construction

[0060] A method for the separation and determination of mercury elements in different valence states in boletus, the separation and determination method of the present invention comprises sequentially adopting microwave extraction, high performance liquid chromatography-inductively coupled plasma mass spectrometry to analyze the mercury elements in different valence states in boletus. The mercury element was separated and determined. The separation and determination method of the present invention is also effective for boletus related products.

[0061] Further, the extract used in the microwave extraction step of the method of the present invention is hydrochloric acid HCl.

[0062] Further, the concentration of the hydrochloric acid extract of the present invention is 0.07mol / L.

[0063] The present invention comprises the following steps: (I) selecting instruments and equipment; (II) preparing reagents and standard solutions; (III) sample pretreatment; (IV) sample determin...

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Abstract

The invention discloses a separation measurement method for mercury elements with different valences in bolete. The method includes the following steps that 1, instruments and equipment are selected,wherein a high-performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS) serves as the separation measurement equipment; 2, a reagent and a standard solution are prepared; 3, sample pretreatment is conducted; 4, sample measurement and result calculation and expression are conducted. The separation measurement method optimizes the preprocessing steps of samples, the separation measurement process is simplified, the detection linear range is wide, the detection limit is low, and the method has the advantages of being easy and rapid to operate, high in accuracy,high in sensitivity, and high in automation level.

Description

technical field [0001] The invention belongs to the technical field of food safety detection, and specifically relates to the technical field of a method for separating and measuring mercury elements in different valence states in boletus. Background technique [0002] Boletus is a rare edible fungus, rich in protein, amino acids, polysaccharides, vitamins and various mineral elements. Because of its delicious taste and rich nutrition, it is considered an ideal green and healthy food, and is deeply loved by consumers at home and abroad. In international trade, boletus is an important foreign exchange-earning agricultural by-product. Edible fungi have a strong ability to accumulate heavy metals, and the Hg content exceeds the standard seriously, posing a threat to consumers' health and life safety. The elemental effect of heavy metals is not only determined by the total amount of the element, but also closely related to the existing form of the element, and the toxicity of d...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/72
CPCG01N30/02G01N30/06G01N30/724G01N2030/062
Inventor 杨玲春陈宏仙李云飞殷红陈芸朱红玉张薇张银陈丽萍王英
Owner CHECKOUT & QUARANTINE TECH CENT YUNNAN ENTRY &EXIT CHECKOUT & QUARANTINE BUR
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