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Detection method for selenium in soybean crops

A detection method and crop technology, applied in the direction of measuring devices, test sample preparation, instruments, etc., can solve the problems of less reports, and achieve the effects of low detection cost, simple operation and convenient implementation

Inactive Publication Date: 2017-02-15
农星谦
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are many detection methods for selenium in cereal crops and fungal foods, but there are few reports on the detection methods of selenium in bean crops, so it is necessary to develop a detection method for selenium in bean crops

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: the detection method of selenium in soybean

[0026] Include the following steps:

[0027] S1. Sample pretreatment: wash soybeans (scientific name: Glycine max (Linn.) Merr.), add 4 times the weight of water, beat in a mixer at 2000r / min for 5min, and obtain soybean powder;

[0028] S2. Microwave digestion: Weigh 1 g of soybean powder obtained in step S1 into a digestion tube, add 5 mL of nitric acid and 3 mL of hydrogen peroxide, shake and mix evenly, and digest in a microwave digester. The microwave digestion procedure is: the power is constant at 1600W, first Raise the temperature from room temperature for 10 minutes to 120°C and keep for 5 minutes; then raise the temperature for 5 minutes to 150°C and keep for 8 minutes; finally raise the temperature for 6 minutes to 180°C and keep for 18 minutes; 20mL, the digestive juice is prepared;

[0029] S3. Sample measurement: take 8mL of the digested solution prepared in step S2, add 1.5mL of concentrated hy...

Embodiment 2

[0033] Embodiment 2: the detection method of selenium in mung bean

[0034] Include the following steps:

[0035] S1. Sample pretreatment: Wash mung beans (scientific name: Vigna radiata (Linn.) Wilczek.) and add water with 4 times the weight, beat in a mixer at 5000r / min for 3min to obtain mung bean powder;

[0036] S2. Microwave digestion: Weigh 1.5 g of the mung bean powder obtained in step S1 into a digestion tube, add 8 mL of nitric acid and 1 mL of hydrogen peroxide, shake and mix evenly, and digest in a microwave digester. The microwave digestion program is: the power is constant at 1600W, First raise the temperature from room temperature for 10 minutes to 120°C and keep for 5 minutes; then raise the temperature for 5 minutes to 150°C and keep for 8 minutes; finally raise the temperature for 6 minutes to 180°C and keep for 18 minutes; to 20mL, the digestive juice is obtained;

[0037] S3. Sample determination: get the digested liquid that makes in 8mL step S2, add con...

Embodiment 3

[0041] Embodiment 3: the detection method of selenium in broad bean

[0042] Include the following steps:

[0043] S1. Sample pretreatment: wash broad beans (scientific name: Vicia faba L.), add 4 times the weight of water, beat in a mixer at 3500r / min for 4min, and obtain broad bean powder;

[0044] S2. Microwave digestion: Weigh 1.25g of broad bean powder obtained in step S1 into a digestion tube, add 6.2mL of nitric acid and 2.5mL of hydrogen peroxide, shake and mix evenly, and digest in a microwave digester. The microwave digestion procedure is: the power is constant 1600W, first raise the temperature from normal temperature for 10min to 120°C and keep for 5min; then raise the temperature for 5min to 150°C and keep for 8min; finally raise the temperature for 6min to 180°C and keep for 18min; Transfer to 20mL to obtain the digestive juice;

[0045]S3. Sample determination: take 8mL of the digested solution prepared in step S2, add 1.5mL of concentrated hydrochloric acid a...

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PUM

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Abstract

The invention discloses a detection method for selenium in soybean crops. The detection method comprises the following steps of S1, pretreatment of a sample; S2, microwave digestion; S3, drawing of a standard curve; S4, determining of the sample. The detection method for the selenium in the soybean crops has the advantages that the accuracy is high, the precision is good, the detection cost is low, and the implementing is convenient.

Description

[0001] 【Technical field】 [0002] The invention relates to a method for detecting selenium in bean crops. [0003] 【Background technique】 [0004] Selenium is one of the essential trace elements for the human body and an essential component of glutathione peroxidase. Selenium has an anti-oxidant effect and is closely related to human health. However, 72% of my country's regions are selenium-deficient areas. Therefore, looking for And the development of selenium-enriched products to ensure that the human body absorbs sufficient selenium has attracted the attention and research of the majority of scientific workers. [0005] At present, there are many detection methods for selenium in cereal crops and fungal foods, but there are few reports on the detection methods of selenium in bean crops. Therefore, it is necessary to develop a detection method for selenium in bean crops. [0006] 【Content of invention】 [0007] The invention provides a method for detecting selenium in bean c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/44G01N21/64
CPCG01N1/286G01N1/44G01N21/6404G01N2021/6417
Inventor 农星谦
Owner 农星谦
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