BJ-1 wheat sulfur stable isotope detection method based on sulfur monoxide mode

A stable isotope and sulfur monoxide technology, applied in measuring devices, material analysis through electromagnetic means, instruments, etc., can solve problems affecting detection results, difficult to focus receivers, etc., and achieve good reproducibility, easy operation, and accuracy sex high effect

Inactive Publication Date: 2021-04-30
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When switching from carbon and nitrogen isotope detection to sulfur isotope detection, due to the influence of the memory effect of the instrument, SO with a high mass-to-charge ratio 2 + Difficult to effectively focus on the receiver, affecting detection results

Method used

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  • BJ-1 wheat sulfur stable isotope detection method based on sulfur monoxide mode
  • BJ-1 wheat sulfur stable isotope detection method based on sulfur monoxide mode
  • BJ-1 wheat sulfur stable isotope detection method based on sulfur monoxide mode

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A BJ-1 wheat sulfur stable isotope detection method based on sulfur monoxide mode, comprising the following steps:

[0023] a. After drying, grinding and filtering the BJ-1 wheat grain sample, accurately weigh 5.0 mg of the sample and put it into a tin cup and wrap it;

[0024] b. IAEA-S-1 (silver sulfide, δS34=-0.30‰), IAEA-S-3 (silver sulfide, δS34=-32.3‰), NBS-127 (barium sulfate, δS34=20.3‰) is the standard product.

[0025] c. Use an element analyzer-stable isotope mass spectrometer to detect the sample to be tested; the parameters of the element analyzer are: oxidation furnace 1020 ° C, column oven 85 ° C, the catalyst in the quartz tube in the oxidation furnace is 25 grams of tungsten oxide and granular 50 grams of pure copper.

[0026] d. The high-energy ion source ionizes the sample to generate SO + The parameters of the ion source of the stable isotope mass spectrometer are: the core voltage of the ion source is 6.2KV, and the voltage of the ion exclusion p...

Embodiment 2

[0034] A BJ-1 wheat sulfur stable isotope detection method based on sulfur monoxide mode, comprising the following steps:

[0035] a. After drying, grinding and filtering the BJ-1 wheat grain samples, accurately weigh 1.0, 2.5, 4.0, 5.5, 7.0, 8.5 and 10.0mg samples respectively, put them into tin cups and wrap them.

[0036] b. IAEA-S-1 (silver sulfide, δS34=-0.30‰), IAEA-S-3 (silver sulfide, δS34=-32.3‰), NBS-127 (barium sulfate, δS34=20.3‰) is the standard product.

[0037] c. Use an element analyzer-stable isotope mass spectrometer to detect the sample to be tested; the parameters of the element analyzer are: oxidation furnace 1020 ° C, column oven 85 ° C, the catalyst in the quartz tube in the oxidation furnace is 25 grams of tungsten oxide and granular 50 grams of pure copper.

[0038] d. The high-energy ion source ionizes the sample to generate SO + The parameters of the ion source of the stable isotope mass spectrometer are: the core voltage of the ion source is 6.2K...

Embodiment 3

[0046] comparative test

[0047]

[0048] In summary, the method of the present invention has the advantages of high precision, good stability, and high efficiency, and can meet the needs of improving the sulfur isotope detection ability of BJ-1 wheat samples.

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Abstract

The invention discloses a BJ-1 wheat sulfur stable isotope detection method based on a sulfur monoxide mode, which comprises the following specific steps: drying, grinding and filtering a BJ-1 wheat grain sample by a screen, filling into a tin cup, wrapping, and detecting a to-be-detected sample by adopting an element analyzer-stable isotope mass spectrometer. By tuning the voltage of the ion source ion repulsion plate of the isotope mass spectrometer, the high-energy electron flow generates a secondary ionization effect on SO2+ to generate SO+, and the SO+ is effectively analyzed by tuning the voltage of the quadrupole mass analyzer, so that the efficient and accurate detection capability of the BJ-1 wheat delta S34 isotope is remarkably improved, and the result precision, stability and efficiency are high.

Description

[0001] The invention was funded by the 2021 Agricultural Achievement Transformation and Promotion Project of the Tianjin Agricultural Commission. technical field [0002] The invention belongs to the technical field of stable isotope analysis, in particular to a method for detecting stable sulfur isotope in wheat. Background technique [0003] Wheat is one of the gramineous grain crops widely planted in the world, but the occurrence of various diseases and insect pests has seriously affected the yield of wheat, among which wheat powdery mildew caused by Erysipha brucei is a serious disease. A new powdery mildew-resistant wheat variety BJ-1 was created using the British cultivated wheat variety Brock as the disease-resistant donor parent and the wheat variety Jing 411 with excellent agronomic properties as the recurrent parent. BJ-1 wheat inherited Brock's resistance to powdery mildew with a high level of disease resistance, and Jing 411's excellent agronomic traits such as d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62
CPCG01N27/62
Inventor 刘晓颖尚云涛范宝莉辛永波耿以工王振英
Owner TIANJIN NORMAL UNIVERSITY
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