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Ultrasound-assisted emulsification-microextraction method for pretreatment of artificially synthesized musk in water body

A synthetic, ultrasonic-assisted technology, used in measuring devices, instruments, scientific instruments, etc., to achieve high enrichment capacity, avoid cross-contamination, and simple operation.

Inactive Publication Date: 2011-07-20
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There is no literature report on the pretreatment method of artificial musk in water by ultrasonic-assisted emulsified liquid-liquid microextraction

Method used

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  • Ultrasound-assisted emulsification-microextraction method for pretreatment of artificially synthesized musk in water body
  • Ultrasound-assisted emulsification-microextraction method for pretreatment of artificially synthesized musk in water body
  • Ultrasound-assisted emulsification-microextraction method for pretreatment of artificially synthesized musk in water body

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. The collected samples are passed through a 0.45 μm filter membrane.

[0026] 2. Take 10.0 mL of the above filtrate into a 15 mL conical centrifuge tube with a cover, add internal standard: 10 μL of n-hexane solution with a concentration of 100 ng / mL hexamethylbenzene (HMB), and add 50 μL of extraction solvent chlorobenzene.

[0027] 3. Place the conical centrifuge tube in the sonicator for 10 minutes and keep the water temperature in the sonicator at 30°C.

[0028] 4. Centrifuge the conical centrifuge tube at 4000r / min for 10min.

[0029] 5. Suck the chlorobenzene at the bottom of the centrifuge tube with a micro-liquid injection needle and analyze it directly by gas chromatography-mass spectrometry.

[0030] 6. The content detection of 8 kinds of artificial musks adopts GC-MS method. Chromatographic column: DB-WAX capillary column, 30 m×0.25 mm×0.25 μm; carrier gas: high-purity He (99.995%), flow rate: 1.0mL min -1 ;Splitless injection, injection volume 1μL; inje...

Embodiment 2

[0033] 1. The collected samples are passed through a 0.45 μm filter membrane.

[0034] 2. Take 10.0 mL of the above filtrate into a 15 mL conical centrifuge tube with a cover, add internal standard: 10 μL of n-hexane solution with a concentration of 100 ng / mL hexamethylbenzene (HMB), and add 100 μL of extraction solvent chlorobenzene.

[0035] 3. Place the conical centrifuge tube in the sonicator for 10 minutes and keep the water temperature in the sonicator at 30°C.

[0036] 4. Centrifuge the conical centrifuge tube at 4000r / min for 15min.

[0037] 5. Suck the chlorobenzene at the bottom of the centrifuge tube with a micro-liquid injection needle and analyze it directly by gas chromatography-mass spectrometry.

[0038] Adopt GC-MS method detection condition to be the same as embodiment 1.

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Abstract

The invention provides an ultrasound-assisted emulsification-microextraction (USAEME) method for pretreatment of artificially synthesized musk in a water body, belongs to the technical field of analytical chemistry, and particularly relates to the technical field of detection of water environment pollutants. The method using the USAEME in the pretreatment of the artificially synthesized musk comprises the following treatment steps of: adding a sample, adding an extracting agent, performing ultrasonic oscillation to form an emulsion system, performing centrifugal separation, absorbing an organic phase and directly performing gas chromatography-mass spectrometry. The method has the advantages of high enrichment capacity, simple operation, low organic solvent consumption and short extraction time, integrates sampling, extraction and concentration, avoids the possible problem of cross contamination, is a simple, quick, low-cost, efficient and environmentally-friendly sample pretreatment technology, and can quickly analyze artificially synthesized musk content of the water.

Description

technical field [0001] The invention discloses an ultrasonic-assisted emulsified liquid-liquid microextraction method for the pretreatment of artificially synthesized musk in water, which belongs to the field of analytical chemistry, and more specifically relates to the technical field of detection of water environmental pollutants. The present invention is designed to use the ultrasound-assisted emulsification method to extract eight kinds of common artificially synthesized musks in the water body with chlorobenzene for quantitative analysis. Background technique [0002] Synthetic musk replaces natural musk with its elegant aroma, excellent fragrance-fixing ability and low price, and is widely used in cosmetics, washing products, skin care products, perfumes and other products. Synthetic musk has become a persistent pollutant in the environment and is classified as an important component of pharmaceuticals and personal care products (PPCPs). With the extensive use of vari...

Claims

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Application Information

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IPC IPC(8): G01N30/08G01N30/02
Inventor 虞锐鹏车金水王利平吴胜芳宋启军刘杨岷
Owner JIANGNAN UNIV