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Water body characteristic value analysis method

A technology of eigenvalue analysis and water body, applied in the fields of analytical chemistry and environmental chemistry, it can solve problems such as weak qualitative ability of organic matter, and achieve the effect of improving accuracy, enhancing qualitative ability, and facilitating comparative research.

Pending Publication Date: 2022-01-14
中国南水北调集团中线有限公司河北分公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Dissolved organic matter and non-dissolved organic matter can represent the overall organic characteristics of the water body. Currently, dissolved organic matter and non-dissolved organic matter need to be tested separately, and the current analysis method is mainly based on the three-dimensional fluorescence method. Responsive to substances from fluorescent groups and poor characterization of organic matter

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Examples

Experimental program
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Effect test

example 1

[0034] Example 1: Analysis of water body characteristics of dissolved organic matter in a certain river;

[0035] (1) On-site sampling and filtering

[0036] Set sampling points at specific locations in the river for sampling. The sampling volume is 10mL. The samples are filtered with a 0.45um glass fiber membrane, and the filtrate is collected for extraction. At the same time, pure water is used as a blank sample to filter through the same steps.

[0037] (2) Sample extraction and analysis

[0038] The nanofiber solid-phase extraction column (produced by Suzhou Xianwei Nano Co., Ltd., model: XWy-01) was activated successively with 100 μL of methanol and 200 μL of pure water, and 10 mL of the sample collected above was taken with an adapted syringe to pass through nanofiber columns. At the same time, pure water was used as a blank sample for extraction using the same steps; the specific surface area of ​​the above-mentioned nanofiber solid-phase extraction column was greate...

example 2

[0048] Example 2: Analysis and research on the characteristic value of a river and its nearby groundwater and its traceability;

[0049] (1) On-site sampling and filtering

[0050] Sampling was carried out at specific location A of the river and two nearby groundwater points B and C. The sampling volume was 10mL. The sample was filtered with a 0.45um glass fiber membrane, and the filtrate was collected for extraction. At the same time, pure water is used as a blank sample to filter through the same steps.

[0051] (2) Sample extraction and analysis

[0052] The nanofiber solid-phase extraction column (produced by Suzhou Xianwei Nano Co., Ltd., model: XWy-01) was activated successively with 100 μL of methanol and 200 μL of pure water, and 10 mL of the sample collected above was taken with an adapted syringe to pass through nanofiber columns. At the same time, the three groups of samples A, B, and C and the pure water samples were extracted by the same steps.

[0053] (3) Io...

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Abstract

The invention provides a water body characteristic value analysis method, which comprises the following steps of A, on-site sampling and extraction: setting a sampling point at a water body position of a river or a lake, and sampling, B, ionization source debugging and mass spectrometry: under the sputtering of an ion flow, ionizing molecules adsorbed on a nanofiber cluster, and performing mass spectrometry under the driving of an electric field to obtain a mass spectrum finally, and C, spectrogram comparison and analysis: acquiring water body characteristic values according to the main quality fragment information, and performing judgment and analysis according to the water body sample characteristic spectrogram condition. The method disclosed by the invention has the beneficial effects that (1) the qualitative ability is strong, the molecular mass distribution condition in the whole mass range can be obtained by the mass spectrum compared with the fluorescence characteristics of organic matters in the water body, and the response is comprehensive; (2) the analysis and test method is rapid and efficient, and high-throughput rapid analysis and identification are facilitated; and (3) soluble organic matters and non-soluble organic matters can be conveniently analyzed and researched simultaneously or respectively, and the applicability is high.

Description

technical field [0001] The invention belongs to the field of analytical chemistry and environmental chemistry, and specifically relates to a method for obtaining and analyzing organic characteristic spectra in water bodies; it can be used to study the characteristic differences between different water bodies, grasp the overall content of organic matter in water bodies, and judge different The source of water bodies can also be used in many fields such as pollution traceability and traceability. Background technique [0002] Commonly used water body eigenvalue analysis methods include the following: [0003] (1) Analytical method for chemical characteristics of inorganic water [0004] Scientists often use instruments such as atomic absorption, ion chromatography, and inductively coupled plasma spectroscopy to measure the contents of potassium, sodium, calcium, magnesium, chloride ions, nitrates, sulfates, carbonates, and bicarbonates in water. According to the difference i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/68G01N1/40G01N1/34
CPCG01N27/68G01N1/405G01N1/4077G01N1/34G01N2001/4088
Inventor 韩晓东陈希母海东桂建业刘爱军王秀贞袁思光赵伦
Owner 中国南水北调集团中线有限公司河北分公司