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Method for extracting and condensing methyl mercury from gasoline by using mercapto cotton

A technology of mercapto cotton and methylmercury, applied in the field of extracting and concentrating methylmercury, mercapto cotton directly extracting and concentrating methylmercury from gasoline

Inactive Publication Date: 2005-09-21
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] After searching and finding novelties, the method of using mercapto cotton to directly extract and concentrate methylmercury from gasoline has not been reported so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In 16 125ml separating funnels, add 100ml of commercially available gasoline respectively, among which 8 funnels add 90 # Gasoline, the other 8 funnels add 93 # Gasoline, the lower end of the separating funnel is connected to an 8 mm mercapto cotton tube with an inner diameter of 0.2 gram of mercapto cotton, and the height of the mercapto cotton in the mercapto cotton tube is 4 cm. Adjust the flow rate to 20 ml / min and let the gasoline flow out through the mercapto cotton. After the flow is over, take off the mercapto cotton tube, blow the gasoline in it with the ear ball, use 3 ml of 2 mol / L hydrochloric acid solution to elute the methylmercury on the mercapto cotton for 3 times, and collect the eluate in a stoppered colorimetric tube In the process, accurately draw 1.5 ml of technologically pure benzene, put it into a colorimetric tube, and shake it for 3 minutes. After standing still and stratifying, absorb the upper layer of benzene solution and use chromatography ...

Embodiment 2

[0019] After joining the 90 respectively # Eight funnels for gasoline and joined 93 # In the eight funnels of gasoline, add 100 nanograms of methylmercurybenzene chloride solution respectively, and the lower end of the separatory funnel is connected with an 8 mm mercapto cotton tube with an inner diameter of 0.2 gram of mercapto cotton, and the height of the mercapto cotton in the mercapto cotton tube is 4 cm. . Adjust the flow rate to 20 ml / min and let the gasoline flow out through the mercapto cotton. After the flow is over, take off the mercapto cotton tube, blow the gasoline in it with the ear ball, use 3 ml of 2 mol / L hydrochloric acid solution to elute the methylmercury on the mercapto cotton for 3 times, and collect the eluate in a stoppered colorimetric tube In the process, accurately draw 1.5 ml of technologically pure benzene, put it into a colorimetric tube, and shake it for 3 minutes. After standing still and stratifying, absorb the upper layer of benzene solutio...

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PUM

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Abstract

The invention relates to a method for direct extracting and concentrating methylmercury from petrol by sulfhydreyl cotton fibers, which belongs to the field of substance isolation technique and comprises: making the petrol flowing through the sulfhydreyl cotton fibers, taking off the sulfhydreyl cotton fibers tube as the petrol flowing out completely, blowing out the remnant petrol using an inner stopper, then eluting the rich methylmercury of sulfhydreyl cotton fibers using chlorhydric acid solution, collecting the chlorhydric acid eluent into a color comparison tube with the plug, sucking the purified petroleum benzene to extract the methylmercury of the eluent, drawing the upper layer benzene liquid after inaction stratification, making the methylmercury gauging by a gas chromatograph.

Description

technical field [0001] The invention belongs to the technical field of material separation and relates to extracting and concentrating methylmercury, in particular to a method for directly extracting and concentrating methylmercury from gasoline with mercapto cotton. technical background [0002] Mercury is an environmental pollutant with severe physiological toxicity. As early as the 1960s, after the Minamata disease incident that shocked the world broke out in Japan, mercury pollution, especially methylmercury, attracted worldwide attention, and extensive and in-depth research began. . There are trace amounts of mercury in chemical fuel petroleum, which can enter the air during the use and combustion of petroleum, causing mercury pollution. Because gasoline is volatile, flammable, and incompatible with water, it is very difficult to extract and determine methylmercury in gasoline. Existing technology can only extract the total mercury in gasoline. The method is to extra...

Claims

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Application Information

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IPC IPC(8): C07F3/10C10G25/00C10L1/04
Inventor 王起超李志博
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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