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Electromigration acid-base titration device for measuring acid and alkali concentration

A technology of acid-base titration and electromigration, applied in the field of analytical chemistry, to eliminate trouble

Inactive Publication Date: 2011-07-13
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Different acid-base indicators have no obvious effect on the results of MNB experiments, so it can solve the difficulty of selecting indicators in traditional acid-base titration

Method used

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  • Electromigration acid-base titration device for measuring acid and alkali concentration
  • Electromigration acid-base titration device for measuring acid and alkali concentration
  • Electromigration acid-base titration device for measuring acid and alkali concentration

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Embodiment Construction

[0023] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0024] Such as figure 1 As shown, this embodiment includes: anolyte tank 1, catholyte tank 6, gel tube 9, anode peristaltic pump 2, cathode peristaltic pump 5, anode waste liquid tank 3, cathode waste liquid tank 4, voltage supply device (DC power supply 7, anode electrode 13, anode electrode tube 10, cathode electrode 14, cathode electrode tube 11) and data recording device (CCD camera 8, scale scale 12), wherein: the positive electrode of voltage supply device is connected with gel tube 9 respectively One end of the anode peristaltic pump 2 and the anode waste liqu...

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Abstract

The invention discloses an electromigration acid-base titration device for measuring acid and alkali concentration in the technical field of analytical chemistry. The device comprises two electrolyte tanks, a gel tube, two peristaltic pumps, two waste liquor tanks, a voltage supply device and a data recording device, wherein the anode of the voltage supply device is respectively connected with one end of the gel tube, the anode peristaltic pump and the anode waste liquor tank; the cathode of the voltage supply device is respectively connected with the other end of the gel tube, the cathode peristaltic pump and the cathode waste liquor tank; the anode peristaltic pump and anode peristaltic pump are respectively connected with the anode electrolyte tank and the cathode electrolyte tank; and the data recording device is arranged on the gel tube. Through the device, the trouble of selecting an indicator is eliminated to a great extent; and the device can be applied to strong acid-strong base titration, weak acid-weak base titration and analysis on nitrogen content of a protein.

Description

technical field [0001] The invention relates to a device in the technical field of analytical chemistry, in particular to an electromigration acid-base titration (EABT) device for measuring acid-base concentration. Background technique [0002] Acid-base titration is a titration analysis method based on acid-base reaction. In acid-base titration, how the pH of the solution changes with the addition of standard substances, how to select the indicator to determine the end point, and make the end point sufficiently close to the stoichiometric point, so as to obtain as accurate measurement results as possible, are very important of. [0003] So far, there have been three acid-base titration methods. The first is an acid-base volumetric titration operated with a burette. In 1791, Descroizilles designed the first measuring cylinder-type burette, and in 1824, Gay-Lussac used the burette to titrate the standard indigo solution for the first time. In the 1850s, Mohr made a great ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/42
Inventor 曹成喜杨清张薇樊柳荫
Owner SHANGHAI JIAO TONG UNIV
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