Quantitative sampling device and method for micro-volume liquid sample

A micro-liquid and sampling device technology, which is applied in the field of mass spectrometry, can solve the problems of complex devices and the inability to directly obtain micro-sample, etc., and achieve the effects of simple device structure, low cost, and simple operation

Active Publication Date: 2021-04-23
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when it is necessary to obtain instantaneous micro-volume liquid samples, the traditional method requires complex devices and usually requires continuous sample injection, which cannot directly obtain micro-volume samples

Method used

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  • Quantitative sampling device and method for micro-volume liquid sample

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Embodiment Construction

[0021] Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is only exemplary and not intended to limit the scope of the invention and its application.

[0022] refer to figure 1 , in one embodiment, a quantitative sampling device for micro-volume liquid samples, comprising a hollow capillary 1, a temperature-resistant sleeve 3 and a heater 4, the hollow capillary 1 is used to transport a liquid sample, the hollow capillary 1 One end is immersed in the liquid sample, and the other end is the outlet port for outputting the liquid sample. The temperature-resistant sleeve 3 is set on the hollow capillary 1, and the temperature-resistant sleeve 3 is provided with a slot 5 in the radial direction. Groove 5 is used as a heating port, and the heater 4 is used for instantaneous heating at the slot 5. When the heater 4 is controlled to heat instantaneously, the hollow capillary 1 from the position of the heating...

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Abstract

A device and method for quantitative sampling of trace liquid samples, the device includes a hollow capillary tube, a temperature-resistant sleeve and a heater, the hollow capillary tube is used to transport the liquid sample, one end of the hollow capillary tube is immersed in the liquid sample, and the other end is an output The outlet end of the liquid sample, the temperature-resistant sleeve is sleeved on the hollow capillary, and the temperature-resistant sleeve is radially provided with slots, and the slots are used as heating ports. When the heater is controlled to heat instantaneously, the liquid in the hollow capillary from the position of the heating port to the outlet end is ejected rapidly from the outlet end, and when the heating is stopped, through Capillary action refills the liquid within the hollow capillary. The invention realizes micro-volume quantitative sampling of liquid samples in capillary tubes, has simple operation, precise control, no need for complex treatment, simple device implementation and low cost.

Description

technical field [0001] The invention relates to the field of mass spectrometry, in particular to a device and method for quantitative sampling of trace liquid samples. Background technique [0002] When an analytical instrument detects a liquid sample, it needs to push the liquid or pre-extract a quantitative sample at the sampling position in advance to generate meteorological ions for detection. Generally, the methods of driving the liquid include pump driving, negative pressure suction and the like. However, when it is necessary to obtain instantaneous micro-volume liquid samples, the traditional methods require complex devices and usually require continuous sample injection, so micro-volume samples cannot be obtained directly. Contents of the invention [0003] The main purpose of the present invention is to overcome the deficiencies of the prior art, and provide a device and method capable of simple, convenient, accurate and controllable quantitative injection of tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J49/04H01J49/00G01N27/62
CPCH01J49/0404H01J49/0468H01J49/045H01J49/0027G01N27/62
Inventor 余泉赵键宏王晓浩
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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