A pretreatment method for laser analysis of inorganic elements in plant samples

A technology of inorganic elements and samples

Active Publication Date: 2020-06-23
苏州莱铯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a pretreatment method for laser analysis of inorganic elements in plant samples. The provided pretreatment method simplifies the sample pretreatment process, shortens the analysis time, and solves the poor pretreatment effect of the prior art. The problem of incomplete sample decomposition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A pretreatment method for laser analysis of inorganic elements in plant samples, the steps of which are as follows:

[0029] Step 1, the plant sample is washed twice with deionized water, dried, crushed and milled, and dried to constant weight to obtain plant sample particles;

[0030] Step 2, put the plant sample particles into the reaction kettle, add nitric acid dropwise until the plant sample particles are submerged, and then ultrasonically react for 10 minutes;

[0031] Step 3, slowly drop hydrogen peroxide into the reaction kettle, and at the same time gradiently raise the temperature for ultrasonic reaction for 5 hours, and filter to obtain the digestion solution;

[0032] Step 4, distill the digestion solution under reduced pressure to form a viscous shape, then add dilute nitric acid to clean it, then add deionized water to make up to volume, and obtain the solution of the plant sample to be tested.

[0033] The deionized water cleaning in the step 1 adopts ul...

Embodiment 2

[0043] A pretreatment method for laser analysis of inorganic elements in plant samples, the steps of which are as follows:

[0044] Step 1, the plant sample is washed 5 times with deionized water, dried, crushed and milled, and dried to constant weight to obtain plant sample particles;

[0045] Step 2, put the plant sample particles into the reaction kettle, add nitric acid dropwise until the plant sample particles are submerged, and then ultrasonically react for 20 minutes;

[0046] Step 3, slowly drop hydrogen peroxide into the reaction kettle, and at the same time gradiently raise the temperature for ultrasonic reaction for 5 hours, and filter to obtain the digestion solution;

[0047] Step 4, distill the digestion solution under reduced pressure to form a viscous shape, then add dilute nitric acid to clean it, then add deionized water to make up to volume, and obtain the solution of the plant sample to be tested.

[0048] The deionized water cleaning in the step 1 adopts ...

Embodiment 3

[0058] A pretreatment method for laser analysis of inorganic elements in plant samples, the steps of which are as follows:

[0059] Step 1, the plant sample is washed 3 times with deionized water, dried, crushed and milled, and dried to constant weight to obtain plant sample particles;

[0060] Step 2, put the plant sample particles into the reaction kettle, add nitric acid dropwise until the plant sample particles are submerged, and then ultrasonically react for 15 minutes;

[0061]Step 3, slowly drop hydrogen peroxide into the reaction kettle, and at the same time gradiently raise the temperature for ultrasonic reaction for 5 hours, and filter to obtain the digestion solution;

[0062] Step 4, distill the digestion solution under reduced pressure to form a viscous shape, then add dilute nitric acid to clean it, then add deionized water to make up to volume, and obtain the solution of the plant sample to be tested.

[0063] The deionized water cleaning in the step 1 adopts u...

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Abstract

The invention belongs to the technical field of laser detection, and concretely relates to a pretreatment method for laser analysis of inorganic elements in a plant sample. The pretreatment method comprises the following steps: 1, cleaning the plant sample with deionized water 2-5 times, air-drying the cleaned plant sample, crushing and milling the air-dried plant sample, and drying the milled plant sample until the weight is constant in order to obtain plant sample particles; 2, placing the plant sample particles in a reaction kettle, dropwise adding nitric acid to immerse the plant sample particles, and carrying out an ultrasonic reaction for 10-20 min; 3, slowly dropwise adding hydrogen peroxide into the reaction kettle, carrying out gradient heating and ultrasonic reacting for 5 h, andfiltering the obtained solution to obtain a digestion solution; and 4, carrying out reduced pressure treatment on the digestion solution to form a viscous solution, adding diluted nitric acid to clean the viscous solution, and adding deionized water to reach a constant volume in order to obtain a plant sample solution to be detected. The pretreatment method simplifies the sample pretreatment process, shortens the analysis time, and solves the problems of poor pretreatment effect and incomplete sample decomposition in the prior art.

Description

technical field [0001] The invention belongs to the technical field of laser detection, and in particular relates to a pretreatment method for laser analysis of inorganic elements in plant samples. Background technique [0002] At present, with the rapid rise of environmental geochemistry and biogeochemistry, the content, form, distribution and migration of chemical elements in the environment have aroused the keen interest of many scholars. Research results in these fields have been widely used in geology, agriculture, medicine and environmental protection. And other aspects have been widely used, and achieved great social and economic benefits. Since the growth of plants is greatly affected by climatic conditions, geological conditions and environmental conditions, the information and data on the distribution of elements in plant samples have begun to be used in geological prospecting, medicinal and nutritional value evaluation of Chinese herbal medicines, endemic disease ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/28G01N1/44
CPCG01N1/286G01N1/44G01N2001/2866
Inventor 杨丁中方泽波
Owner 苏州莱铯科技有限公司
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