Method of detecting zinc and selenium contents in zinc-selenium tea

A technology of selenium tea and content, which is applied in the preparation of test samples, electrochemical variables of materials, etc., can solve the problems of no disclosure of zinc and selenium tea content of zinc and selenium, and no clear detection process, so as to improve the detection accuracy, Improve detection accuracy and ensure the effect of accuracy

Inactive Publication Date: 2017-10-17
GUIZHOU FENGGANG COUNTY FIELD CHARM TEA CO LTD
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Problems solved by technology

[0003] Although, in the prior art, for the prepared zinc-selenium tea, there will be detection of the components in the zinc-selenium tea, especially the detection of the content of the zinc-selenium component, but none of them has a clear detection process, and it is only given The specific zinc and selenium content contained in zinc-selenium tea, such as the zinc-selenium tea processing technology with the patent application number 201610462092.4, discloses the zinc content and selenium content in the prepared zinc-selenium tea, but it does not disclose How to detect zinc and selenium content in tea

Method used

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Embodiment

[0025] A method for detecting zinc and selenium content in zinc-selenium tea, comprising the following steps:

[0026] (1) carbonizing the zinc-selenium tea in a closed space, so that after the temperature in the closed space is reduced to normal temperature, carbonized tea is obtained;

[0027] (2) pulverizing the carbonized tea into powder to obtain carbonized tea powder;

[0028] (3) Mix carbonized tea powder and ethanol evenly according to 1g of carbonized tea powder and 100-200mL of distilled water to prepare carbonized tea solution;

[0029] (4) Establish a standard curve: prepare multiple standard zinc solutions with different zinc ion concentrations, use a three-electrode system to detect all standard zinc solutions, and obtain the standard concentration linear equation A of zinc ions and current values; prepare multiple different selenium ion concentrations standard selenium solution, use the three-electrode system to detect all standard selenium solutions, and obtai...

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PUM

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Abstract

The invention relates to the technical field of component detection, in particular to a method of detecting zinc and selenium contents in zinc-selenium tea; by subjecting zinc-selenium tea to enclosed carbonization, dissipation of selenium and zinc in the zinc-selenium tea is effectively avoided; after the zinc-selenium tea is cooled to normal temperature, zinc-selenium vapor formed during the carbonization process is charged into a closed space, zinc and selenium in the zinc-selenium tea are never lost, and zinc and selenium detection accuracy for zinc-selenium tea is improved; in conjunction with stepwise establishment of standard curves, the standard curves are combined; a linear equation curve under the standard combined solution in the presence of zinc and selenium is established; liquid material to be detected is prepared into a liquid to be detected; changes in current in the liquid to be detected are then detected; zinc-selenium combination of the liquid to be tested is acquired in conjunction with a picture drawn in conjunction with the standard cures, detection difficulty is lowered, and detection accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of component detection, in particular to a method for detecting the contents of zinc and selenium in zinc-selenium tea. Background technique [0002] Zinc-selenium tea refers to organic ecological tea rich in zinc and selenium, in which zinc and selenium exist in the form of organic zinc and organic selenium in zinc-selenium tea, and zinc and selenium are essential trace elements for the human body element, drinking zinc-selenium tea has more health-care effects; and in the prior art, most of the zinc-selenium teas are green teas, and the reason is that there are relatively few processing steps in the green tea preparation process, especially no fermentation treatment is required; And black tea, it needs to carry out fermentation treatment in the preparation process, and zinc selenium element exists in the form of organic zinc and organic selenium in zinc selenium tea, in the fermentation process, these orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48G01N1/28
CPCG01N27/48G01N1/28
Inventor 金祥生安涛
Owner GUIZHOU FENGGANG COUNTY FIELD CHARM TEA CO LTD
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