Gas chromatograph pillar for volatile gaseous state arsenic compounds separation and preparation method thereof

A gas chromatographic column, arsenic compound technology, applied in chemical instruments and methods, material separation, analytical materials, etc., can solve the problem that the chromatographic column cannot be bent and fitted, it is difficult to find the chromatographic column, and the separation effect is good, and the separation effect is achieved. Ideal, excellent chemical resistance, low operating proficiency requirements
CN101329311BInactive Publication Date: 2011-06-29NORTH CHINA ELECTRIC POWER UNIV (BAODING)
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Publication Date
2011-06-29
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a gas chromatographic column and a preparation method used for the separation of volatile gas arsenic compounds, which belongs to the field of chemical detection technique and is used for solving the problem that the normal chromatographic column is not suitable for the separation of volatile gas arsenic compounds. The technical proposal of the invention is that the chromatographic column body is a flexible PTFE column body and the filling material is a power-shaped polysiloxane stationary phase of 80-100 meshes. The filling material is filled by a blowing positive-pressing filling method. The invention can meet the specific requirement of the separation of the gas arsenic compounds and has the advantages of strong plasticity, easy cutting, being convenient for being bent and good adaptability, can bear the low temperature of minus 196 DEG C and the high temperature of 200 DEG C, has outstanding performance of chemical corrosion resistance, and can realize the butting with collecting devices and detection devices conveniently. The blowing positive-pressing filling method provided by the invention has the advantages of convenience, simpleness, low requirementon the operation skillfulness, etc., with the filling density, column effect and repeatability completely meeting the separation requirement of the gas arsenic compounds.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an analysis instrument, in particular to a gas chromatographic column for the separation of volatile gaseous arsenic compounds, and belongs to the technical field of detection. Background technique

[0002] In actual environmental monitoring and scientific research, the standards of gaseous arsenic compounds are usually derived from the reduction reaction between a reducing agent (such as sodium borohydride solution, etc.) and the corresponding water-soluble arsenic compounds. The boiling point of gaseous arsenic compounds is very low, and it is gaseous at room temperature. It is not only time-consuming to separate volatile gaseous arsenic compounds with capillary gas chromatography columns, but also difficult to achieve online with other detectors (such as ICPMS, AFS and other special effect atomic detectors). It is even less likely to be connected with an on-line derivation (generation) device of gaseous arsenic compounds. T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More