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Method for enriching and separating yellow substance from seawater

A technology for yellow substances and seawater, which is applied in the field of mass enrichment and separation of yellow substances, can solve the problems of low elution rate, slow sample loading speed, and low adsorption capacity, and achieve high elution rate, fast sample loading speed, and adsorption capacity. big effect

Inactive Publication Date: 2006-07-12
THE FIRST INST OF OCEANOGRAPHY SOA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of non-ionic solid adsorbents such as alumina, carbon 18, and silica gel can adsorb yellow substances, but their adsorption capacity is small, the sample loading speed is slow, and the elution rate is low, which obviously cannot meet the requirements of enriching and separating yellow substances from seawater. needs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, wet-pack the cleaned LSA-20 resin into a column with a column diameter of 1 cm and a resin column height of 25 cm, wash the column with ultrapure water, and wash the column with HCl aqueous solution with a pH of 2.3±0.4, that is, keep it in an acidic state for later use;

[0020] Take a 200L seawater sample, filter it with a 0.22 μm glass fiber membrane, and then use analytically pure HCl to adjust the pH of the seawater to 2.3±0.4. Sample loading by peristaltic pump, control flow rate 4.0-6.0ml / min;

[0021] Elution: wash the column with pH=2.3±0.4HCl to remove residual seawater in the column; wash the column with ultrapure water to remove residual HCl in the column, use AgNO 3 Check the solution until the column water has no precipitation. Finally, elute with chromatographically pure methanol until the eluent is colorless to obtain a methanol solution of the yellow substance;

[0022] Concentration: Use a rotary evaporator to concentrate the methanol solution...

Embodiment 2

[0025] Treat the clean XAD-8 resin wet-packed column, column diameter 1.6cm, resin column height 20cm, wash the column with ultrapure water, wash the column with HCl aqueous solution with pH=2.0, and keep it in an acidic state for later use;

[0026] Take a 500L seawater sample, filter it with a 0.22 μm glass fiber membrane, and adjust the pH to 2.0 with concentrated HCl. Sample loading by peristaltic pump, control flow rate 6.0ml / min;

[0027] Elution: wash the column with pH=2.0 HCl to remove residual seawater in the column; wash the column with ultrapure water to remove residual HCl in the column, use AgNO 3 Test the solution until no precipitation occurs; finally elute with chromatographic alcohol ethanol until the eluent is colorless, and obtain the ethanol solution of the yellow substance;

[0028] Concentration: Purging the concentrator with nitrogen gas at 45°C, concentrating the ethanol solution of the yellow substance to dryness, and dissolving it in ultrapure water...

Embodiment 3

[0031] First, wet-pack the cleaned LSA-10 resin into a column with a column diameter of 1 cm and a resin column height of 25 cm, wash the column with ultrapure water, and then wash the column with an aqueous HCl solution with a pH of 2.3±0.4, that is, keep it in an acidic state for later use;

[0032] 200 L of seawater samples were filtered with a 0.22 μm glass fiber membrane, and then the pH of the seawater was adjusted to 2.3±0.4 with analytically pure HCl. Sample loading by peristaltic pump, control flow rate 4.0-6.0ml / min;

[0033] Elution: wash the column with pH=2.3±0.4HCl to remove the residual seawater in the column; then wash the column with ultrapure water, and use AgNO 3 Check the solution until the column water has no precipitation. Finally, elute with chromatographic alcohol methanol until the eluent is colorless to obtain a methanol solution of the yellow substance;

[0034] Concentration: Concentrate the methanol solution of the yellow substance at 50°C to dry...

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PUM

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Abstract

The invention relates to a method of separating yellow substance from sea water by enrichment. Take macro reticular resin as adsorbent; adjust the pH of the sea water after filtration to acidic property using hydrochloric acid; crawl the sample on the pump; elutriate it by organic reagent; rotatory evaporate the eluent or purge it by nitrogen; remove organic reagent; get the aqueous solution of yellow substance after ultra-pure water dissolution; freeze-dry the aqueous solution to get its dry power; or reseperate the aqueous solution by jel pole to get yellow substance component with molecular weight in different range; said macro reticular resin are selected to use the type of LSA-20, XAD-8 and so on; eluent are selected to use organic reagent of chromatogram pure such as methyl alcohol, alcohol; said gelatin are selected to use the type of G-25, G-50. The invention provides abundant adsorbing medium which can adsorb CDOM selectively and largely with fast sampling rate, simple operation which is easy to control, high elution rate, and can get large quantity of yellow substance from sea water.

Description

technical field [0001] The invention relates to a method for enriching and separating yellow matter (CDOM) in large quantities from seawater. Background technique [0002] As a yellow substance of colored soluble organic matter (chromophoric dissolved organic matter, CDOM), Kalle first called it Gelbstoff, which is an important part of dissolved organic matter (DOM), accounting for about 40%-60% of dissolved organic carbon in water bodies; its The name comes from its influence on water color, the yellow substance contributes 85%-100% to water color, which can make water yellow or brown. Yellow substances are biologically inert substances and have good conservation in the ocean, so they are considered to be the best tracer substances in the ocean, and are widely used in the evaluation of coastal water quality, marine pollution degree, and ocean water mass Many studies have shown that yellow matter is an essential research factor in marine ecosystems, optical remote sensing, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/42
Inventor 柳先平李磊戴金凤王小如黎先春张良
Owner THE FIRST INST OF OCEANOGRAPHY SOA
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