Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for extracting and purifying chlorine in soil and a method for testing chlorine isotope composition

A purification method, soil technology, applied in the test of chlorine isotope composition, extraction and purification of chlorine in soil

Active Publication Date: 2021-01-29
LINYI UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the isotopic composition of chlorine in the soil, and the extraction and purification method of chlorine in the soil is the key to the study of the isotopic composition of chlorine in the soil.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for extracting and purifying chlorine in soil and a method for testing chlorine isotope composition
  • A method for extracting and purifying chlorine in soil and a method for testing chlorine isotope composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Five soil samples were collected, labeled as sample 1, sample 2, sample 3, sample 4 and sample 5. Samples 1 to 5 were tested according to the following methods, respectively.

[0085] (1) After the collected soil sample is air-dried, grind, pass through a 60-mesh sieve, and get the under-sieve;

[0086] (2) Accurately weigh 2.0g of soil sample, place it in a 15mL centrifuge tube, add 10mL of deionized water to it, wait for the soil sample to infiltrate to form a suspension, and ultrasonically oscillate at 30°C for 30min; Centrifuge for 5 minutes and collect the supernatant;

[0087] (3) Repeat the process of step (2), separate 5 times, and combine all supernatants obtained.

[0088] (4) Pass the solution through a solution filled with 0.3mLNO 3 - Type strong base type anion resin column, after the solution is completely drained, wash with 0.5mL deionized water each time, and wash the resin column 3 times;

[0089] (5) Use 10mL 0.1mol / L HNO 3 The solution rinses th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a method for extracting and purifying chlorine in soil and a method for testing chlorine isotope composition. The invention firstly dissolves the soil in water, transfers the chloride ions in the soil into the solution, and then passes the NO 3 ‑ Type anion resin, Ag + type resin, Ba 2+ type resin and Cs + The type resin purifies the extracted chlorine, realizing the extraction and purification of chlorine in the soil. In the invention, the chlorine isotope in the purified product obtained by extraction and purification is tested by thermal ionization mass spectrometry, and the composition of the chlorine isotope in the soil can be obtained through testing. The test method provided by the present invention has high accuracy. As shown in the embodiment of the present invention, the 2SD (‰) value of the test method provided by the present invention is 0.09-0.32.

Description

technical field [0001] The invention relates to the field of chlorine isotope research, in particular to a method for extracting and purifying chlorine in soil and a method for testing chlorine isotope composition. Background technique [0002] Chlorine is an essential beneficial nutrient element for plants and plays an important role in the growth and development of plants. The chlorine in plants mainly comes from the soil, and the content of Cl in the soil restricts the absorption and utilization of plants and the distribution of chlorine in the soil. The average chlorine content in the soil is about 100mg / kg, with a variation range of 37-370mg / kg. When the chlorine content in the soil is less than 2mg / kg and the chlorine content in the plant is less than 100mg / kg, there will be symptoms of chlorine deficiency, which will affect the normal life activities of plants. Excessive chlorine content can cause chlorine poisoning in plants. Therefore, studying the distribution o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/62
CPCG01N27/626
Inventor 徐庆彩苟佃达孙爱德任丽英
Owner LINYI UNIVERSITY