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Solid phase extraction sample bottle and thermal analysis apparatus

A sample bottle and thermal analysis technology, applied in the direction of measuring devices, analytical materials, instruments, etc., can solve problems such as unsatisfactory, limited enrichment multiples, and inability to handle viscous liquid samples, etc., to improve accuracy and repeatability, improve Preprocessing efficiency, effect of improving data repeatability

Active Publication Date: 2006-01-18
QINGDAO SHENGHAN CHROMATOGRAPH TECH CO LTD
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, the former still has waste solvents, and the disadvantage of the latter is that the service life of the solid-phase microextraction fiber is ≤30 times, and the amount of stationary phase is ≤1μL, which limits the enrichment multiple, the repeatability is not high, and it cannot handle liquid samples with a slightly higher viscosity. , cannot meet the requirements of many trace analysis

Method used

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  • Solid phase extraction sample bottle and thermal analysis apparatus
  • Solid phase extraction sample bottle and thermal analysis apparatus
  • Solid phase extraction sample bottle and thermal analysis apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Extraction enriches volatile and semi-volatile organic pollutants in surface water.

[0054] 1.5mL sample bottle with an inner diameter of 8 mm and a round bottom for adsorption and extraction of samples. The inner wall is coated with 30 mg of cross-linked OV-1 stationary phase, and the film thickness is about 20 μm. Add 1mL of water sample into the bottle, seal it with a rubber pad lined with PTFE film and an aluminum cap, place it on a thermostatic rocker with a swing frequency of 20Hz, and a temperature of 40°C. After extracting for 10min, open the bottle cap and pour out the sample Finally, shake off the residual water droplets in the extraction sample bottle, put the extraction sample bottle into a thermal desorber, set the analysis temperature at 260°C for 6 minutes, and then turn off the heating power. Use an elastic quartz capillary with an inner diameter of 120 μm as the purge gas outlet pipe, and insert it directly into the retention spacer column through the ...

Embodiment 2

[0056] Extract and enrich the pesticide residues in the soil.

[0057] The extraction sample bottle is the same as in Example 1. Take 0.25 grams of soil samples in the extraction sample bottle, add 0.8 mL of twice distilled water, seal it according to the method in Example 1, let the water soak the soil for 5 minutes, and then put it on a constant temperature shaker at 45 ° C. After shaking for 60 minutes, open the bottle cap, then pour out the sample, quickly wash the extraction sample bottle with double distilled water, shake off the residual water droplets in the extraction sample bottle, put the extraction sample bottle into a thermal desorber, and analyze at 280°C for 6 minutes , and then turn off the heating power. Other analysis conditions are the same as in Example 1, but the temperature is programmed to 275° C., and qualitative analysis is performed by GC-MS.

Embodiment 3

[0059] Extraction and enrichment of pesticide residues in yoghurt samples.

[0060] A 1.5mL conical bottom extraction sample bottle was used, and the inner wall was coated with a cross-linked 20mg SE-54 stationary phase with a film thickness of about 14μm. Take 1 mL of yogurt and add it to a 1.5 mL extraction sample bottle, seal it according to the method in Example 1, and then place it on a thermostatic rocker at a constant temperature of 40 ° C for 60 min and a frequency of 10 Hz. The subsequent steps were the same as in Example 2, and were analyzed by GC-MS.

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Abstract

The invention relates to a solid phase extract sampling bottle and heat analysis device in the field of sample measuring technology. It is a liquid-solid extraction and gas-solid absorption technology, which is used to pre-treat gas sample, liquid sample and isotropy sample and to extract and collect the objecting component, especially in color analysis and instrumental analysis. The solid phase extract sampling bottle and heat analysis device comprises an extract sampling bottle which is like a cylinder with one open end and one sealed end as bottom, and a casing and one layer extracting fixed phase on the middle part of the cylinder's inner wall, a heat analysis device and an extract sampling bottle cleaning device.

Description

technical field [0001] The invention relates to sample detection technology, which is a liquid-solid extraction and gas-solid adsorption technology, which is used for the pretreatment of gas samples, liquid samples and homogeneous samples and the extraction and enrichment of target components, especially for chromatographic analysis and Sample pretreatment and extraction enrichment of target components in instrumental analysis. Background technique [0002] In environmental investigation, environmental protection and food safety monitoring, it is necessary to analyze the organic pollutants contained in a large number of samples and the components in animal and plant extracts. The sample pretreatment in these analyzes has been using different forms of liquid-liquid, liquid-solid extraction and gas-solid adsorption technology of headspace extraction to achieve the functions of phase transfer and selective enrichment of the target components in the sample to meet the Analytica...

Claims

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Application Information

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IPC IPC(8): G01N30/08G01N30/02G01N30/60
Inventor 关亚风刘文民赵景红王海龙
Owner QINGDAO SHENGHAN CHROMATOGRAPH TECH CO LTD
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