Intelligent automatic liquid-liquid extraction device and application method thereof

Abstract

The invention relates to the field of extraction devices, in particular to an intelligent automatic liquid-liquid extraction device. An extraction and injection device is driven by a three-axis driving device to move to the position above an organic solvent storage bottle, an organic solvent in the organic solvent storage bottle is extracted through the extraction and injection device, then the extraction and injection device moves to a water sample storage bottle, the organic solvent is injected into the water sample storage bottle, then the water sample storage bottle is grabbed by the extraction and injection device through a grabbing device and moved into an oscillation device to realize oscillation treatment, the water sample storage bottle is moved to a detection bottom plate after oscillation treatment is completed, the organic phase liquid level height is detected through an organic phase detection camera, then the water sample storage bottle is placed back to a water sample storage jig through the grabbing device, and the extraction and injection device extracts the organic phase and injects the organic phase into the organic phase storage bottle to facilitate subsequent detection work. The whole working process is full-automatic treatment, full-automatic intelligent automatic liquid-liquid extraction can be achieved only by setting corresponding parameters in a control center, and manual treatment is not needed.

Description

technical field [0001] The invention relates to the field of extraction devices, in particular to an intelligent automatic liquid-liquid extraction device and its usage method. Background technique [0002] Although the content of semi-volatile organic compounds in surface water is very low, the impact of these trace organic compounds on the ecological environment and human health cannot be ignored. Most of them have the characteristics of "carcinogenic", "teratogenic" and "mutagenic". At the same time, because of its low solubility in water, stable chemical properties, and long half-life, it persists in the environment and can accumulate through the biological chain, becoming one of the important pollutants in the environment that cannot be ignored. Such compounds are included in the blacklist of substances. There are more than 20 kinds of semi-volatile organic compounds in the analysis items stipulated in the "Surface Water Environmental Quality Standard" (GB3838-2002). ...

AI Technical Summary

Problems solved by technology

Traditional liquid-liquid extraction needs to consume a large amount of solvent, and the operation time is long, and the extraction agent is toxic, especially the organic solvent containing halogen, which is not conducive to the health of analysts and will also cause certain pollution to the environment

The U.S. Environmental Protection Agency uses solid-phase extraction cartridges for the pretreatment of semi-volatile substances. The extraction cartridges require a series of operations such as activation, sample loading, elution, and concentration. The process is cumbersome and requires a large amount of water samples.

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