Electricity safety protection device for online detection of pressurized preparative electrochromatography and sample collection
A safety protection device and sample collection technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of inability to withstand high voltage, no electrical safety protection device for outlet solution, and inability to effectively eliminate electrolytic bubbles, etc., to ensure safety Effect
Active Publication Date: 2015-04-08
SHANGHAI JIAO TONG UNIV
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Problems solved by technology
In addition, the preparative electrochromatographic separation of chemical substances and biological substances (CN200410084557.4) can collect samples separated by electrochromatography, but it is different from the instrument design and working principle of capillary electrochromatography, and belongs to the low-pressure preparative electrochromatography system. The inlet and outlet electrode chambers are all designed with open solution pools, the system pressure is close to normal pressure, and the electrolytic bubbles cannot be effectively eliminated
Therefore, the system cannot actually withstand high voltage, and there is no electrical safety protection device for the outlet solution
Method used
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Embodiment 1
[0035] This embodiment provides a pressurized preparative type electrochromatographic on-line detection and sample collection electrical safety protection device, the electrical safety protection device includes a protective electrode b, a protective resistor R, and a grounding wire B connected by wires in sequence, and is located in an effective On the electrochromatographic liquid flow path F between electrode a and online detector C; at this time, the inlet electrode is grounded, and the outlet electrode a is connected to the effective voltage, that is, the outlet electrode a is an effective electrode, and the device is connected to the outlet electrode a Between and online detector C;
[0036] Wherein, the material of the protective electrode is platinum, and the protective electrode is connected to the electrochromatographic liquid flow path through the tee e; the outer diameter of the protective electrode matches the inner diameter of the tee; it is guaranteed that the te...
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Abstract
The invention discloses an electricity safety protection device for online detection of pressurized preparative electrochromatography and sample collection. The electricity safety protection device comprises a protective electrode, a protective resistor and an earth lead, which are sequentially connected by a lead wire and are positioned on an electrochromatography liquid flow path adjacent to an active electrode. The electricity safety protection device is additionally designed near the active electrode of the electrochromatography for eliminating the electric potential of the electrochromatography outflowing liquid before entering an online detector and a collector, or for eliminating the electric potential behind a sample injector and a liquid phase pump, so as to ensure that the online separation, the online detection and the separated sample collection are carried out safely; and besides, when the pressurized electrochromatography is used for preparing the sample, the electrochromatography outflowing liquid is enabled to be introduced into the online detection operation and an automation online collector safely, or the outflowing liquid is enabled to be manually collected safely, therefore, the phenomena of hurting to people and instrument damage due to electric leakage can be avoided.
Description
technical field [0001] The invention relates to a pressurized preparation type electric chromatographic on-line detection and sample collection electric safety protection device. Background technique [0002] The key to low-cost and efficient industrialization of biomedical products is to develop efficient, stable, automated, and sample-covering preparative separation technologies. More and more active small molecular polar substances have been discovered, for example, active small peptides, oligosaccharides, small molecular nucleotides, and organic acids. However, there are technical difficulties in the preparation and separation of these substances. These substances cannot be separated and purified by conventional liquid chromatography (Strege MA. Hydrophilic interaction chromatography-electrospray mass spectrometry analysis of polar compounds for natural product) drug discovery[J].Anal Chem 1998,70(13):2439-2445; Jiang Z,Smith NW,Ferguson PD,et al.Hydrophilic interaction...
Claims
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IPC IPC(8): G01N30/02G01N30/06
Inventor 冯蕾毛志勇
Owner SHANGHAI JIAO TONG UNIV
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