Micro-pipetting device and method for precisely transferring alkali metal elements

Abstract

The invention belongs to an alkali metal transfer technology, and particularly discloses a micro-pipetting device and method for precisely transferring alkali metal elements. The device comprises an anaerobic protection cavity, an alkali metal melting module and an alkali metal pipetting module, the alkali metal pipetting module comprises a propelling piston rod, a pipettor packaging holder and a metal capillary tube, a glass micropipettor is arranged in the pipettor packaging holder, the propelling piston rod extends into the glass micropipettor, a metal capillary wire is fixedly connected to the power output end of the propelling piston rod, the end, not connected with the propelling piston rod, of the metal capillary wire is inserted into the metal capillary tube, a first heating unit is arranged on the periphery of the metal capillary tube, and a first heat preservation unit is arranged on the periphery of the first heating unit. The method comprises the following steps: heating and melting alkali metal elements to be transferred; and absorbing the alkali metal element by adopting a pipettor, and performing trace pipetting on the alkali metal element. According to the invention, nano-liter-scale trace alkali metal transfer can be realized, and the applicability is high.

Description

technical field [0001] The invention belongs to the technical field of alkali metal transfer, and more particularly relates to a micropipette device and method for precise transfer of alkali metal elements. Background technique [0002] Conventional pipette Micropipetting is a general and traditional method commonly used in the biomedical field for transferring liquid biochemical samples. Traditional pipettes are made of organic materials. The pipetting process requires a large amount of liquid samples to fill the transmission pipes. The liquid NMR samples use a large amount and are not suitable for a small amount of liquid samples. The piston pipette solves the problem of filling the transmission pipeline, but its lowest pipetting volume is on the order of microliters, and does not solve the problem of the minimum pipetting volume. Furthermore, this type of pipette usually works at room temperature, and the melting point of alkali metals is tens of degrees, for example, th...

AI Technical Summary

Problems solved by technology

If the method of quantitative filling is not adopted, the content of alkali metal elements in each atomic vapor chamber will be different, which will affect the yield of atomic vapor chamber

[0004] At present, there is no publicly reported alkali metal micropipette method, and Lutwak et al. only mentioned the use of micro-volume small-volume pipettes in the article "The chip-scaleatomic clock low-power physics package" (36th Annual Precise Time and TimeInterval Meeting) , pipette a small amount (1-10nL) of cesium into the atomic vapor chamber

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