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Multi-purpose pressurized capillary electrochromatography apparatus

A capillary electrochromatography and capillary chromatographic column technology, which is applied in the field of multi-purpose pressurized capillary electrochromatography devices, can solve the problems of inflexible flow splitting mode, etc., and achieve the effect of promoting establishment and optimization and increasing flexibility.

Inactive Publication Date: 2007-08-29
UNIMICRO SHANGHAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still disadvantages that the shunting method is not flexible enough

Method used

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  • Multi-purpose pressurized capillary electrochromatography apparatus
  • Multi-purpose pressurized capillary electrochromatography apparatus
  • Multi-purpose pressurized capillary electrochromatography apparatus

Examples

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Embodiment 1

[0009] Fig. 2 is the embodiment 1 of applying the multipurpose pressurized capillary electrochromatography device of the present invention to separate aniline and benzoic acid mixed samples;

[0010] Fig. 3 is the embodiment 2 of applying the multipurpose pressurized capillary electrochromatography device of the present invention to separate ink samples.

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0012] The multi-purpose pressurized capillary electrochromatography device of the present invention is shown in FIG. 1 , the suction end of the high-pressure pump 3 is passed into the mobile phase 1 through the suction pipe 2 , and its output end is connected with the mixing valve 4 . The mixing valve 4 is connected with the splitter 6 or the injection valve 7 through a connecting pipe, and enters the separation system 10 . The sample pushed by the mobile phase 1 can first pass through the...

Embodiment 2

[0019] Application of the present invention to separate ink samples

[0020] A C18 packed capillary column with an inner diameter of 150 μm, an effective column length of 30 cm, a total length of 50 cm, and a particle size of 5 μm was used to separate ink samples by piezoelectric electrochromatography. Gradient elution was adopted, and the mobile phase was A: 5% acetonitrile + 95% water + 0.05% TFA, B: 100% acetonitrile + 0.05% TFA. Detection wavelength: 214nm, applied voltage -10kV, pressure 9.4MPa.

[0021] The injection was repeated 5 times, the retention time RSD (%) of each peak was within 1%, the maximum retention time RSD (%) of each peak area was 2.5%, and the analysis accuracy of complex samples was guaranteed (Figure 3). The sample is thus finely separated.

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Abstract

The invention discloses a combination press capillary tube electrochromatography equipment, it is composed of the sequential linked high pressure pump, mixing valve, injection valve, capillary chromatographic column, detector and high voltage power pack parallel connect with capillary chromatographic column and supplies high voltage for capillary chromatographic column, much more it includes diverter and electric insulator, this invention makes to control the sample volume, increase the flexibility of the system, has promoting and optimizing effect for establishing analysis method.

Description

technical field [0001] The invention relates to an electrochromatographic detection device, in particular to a multipurpose pressurized capillary electrochromatographic device. Background technique [0002] At present, most chromatographic separation and detection devices are composed of a driving device, a separation medium (chromatographic column or capillary), and detection equipment. There are mainly the following types: one is gas chromatography device, which is composed of gas source, gas chromatography column and detection equipment, and is mainly used to separate gas mixture and substances with low boiling point and easy gasification; the other is liquid chromatography device, which is composed of high-pressure pump , liquid chromatography column and detection equipment, mainly used to separate liquid mixtures, with good separation selectivity and a wide range of applications, but because the driving force is pressure, the mobile phase moves forward in a parabola on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02G01N30/10
CPCG01N27/44756G01N30/02G01N30/20
Inventor 阎超黄晓晶
Owner UNIMICRO SHANGHAI TECH
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