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Integrated closed sample dissolving system and method

An integrated and sample-dissolving technology, applied in the preparation of test samples, etc., can solve the problems of endangering the health of experimenters, incomplete discharge of acid vapor, and easy corrosion of outer steel sleeves, so as to improve test efficiency and reduce processing difficulty , the effect of simple structure

Pending Publication Date: 2021-03-30
NAT RESERACH CENT OF GEOANALYSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the above analysis, the present invention aims to provide an integrated closed sample dissolving system and method, which is used to solve the problem of cumbersome operation steps, high operating strength, and external The cover is easy to be corroded, a lot of equipment / devices are used, and it takes up a lot of space, and the method of removing the acid is not only not exhausted completely, but also prone to dust pollution when the acid is removed, which endangers the health of the experimenters and also leads to sample contamination. One or more of the problems of cross-contamination between

Method used

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  • Integrated closed sample dissolving system and method
  • Integrated closed sample dissolving system and method

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Embodiment 1

[0061] A specific embodiment of the present invention discloses a closed heating and digestion device, such as Figure 1 to Figure 3 As shown, the closed heating and digestion device includes: a heating table, a sample dissolution tank 1 and a fixed sealing assembly; wherein, the heating table is provided with a plurality of sample dissolution tank installation holes 2-1; the sample dissolution tank 1 includes a tank body 1-1 and The cover body 1-2, the sample dissolution tank 1 is made of polytetrafluoroethylene, the sample dissolution tank 1 is disassembled and installed in the installation hole 2-1 of the sample dissolution tank, and the heating table is used to install the sample dissolution tank in the installation hole 2-1 A plurality of sample dissolution tanks 1 in 1 are heated; the fixed sealing assembly includes a fixed cover plate 6 and a closing bolt 8, the fixed cover plate 6 is located above the heating platform and is connected with the heating platform, and the ...

Embodiment 2

[0115] Another specific embodiment of the present invention discloses an airtight heating and acid removal device, which is used in conjunction with the airtight heating and digestion device in Example 1. After the sample is digested by the airtight heating and digestion device, the The airtight heating and acid removal device of the example performs acid removal treatment on the solution in the sample dissolving tank 1 .

[0116] A kind of closed sample dissolving and acid-dispelling device of the present embodiment, such as Figure 10 to Figure 12 As shown, it includes: a sample dissolution tank 1, a heating platform and an acid vapor collection and processing assembly; wherein, the metal base 2 of the heating platform is provided with a plurality of sample dissolution tank installation holes 2-1; the acid vapor collection and processing assembly is installed on the metal base 2 above and communicated with the sample dissolution tank 1, for collecting and processing the acid...

Embodiment 3

[0141] Based on the shortcomings of the existing "inner liner + outer steel sleeve" type closed sample dissolution device, this embodiment provides an integrated closed sample dissolution system that integrates the functions of closed sample dissolution, closed acid removal and sample redissolution. The sample dissolving and redissolving functions of the closed heating and digestion device of Example 1 and the closed acid removal function of the closed heating and acid removal device of Example 2.

[0142] An integrated closed sample dissolving system in this embodiment includes the closed heating and digestion device of Example 1 and the closed heating and acid removal device of Example 2, which are composed of two sets of independent devices. The closed heating and digestion device is used for dissolving and recombining To dissolve the sample, the closed heating acid removal device is used for acid removal.

[0143] Considering that the closed heating digestion device in Exa...

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Abstract

The invention relates to an integrated closed sample dissolving system and method, belongs to the technical field of sample dissolving devices, and solves the problems of complicated operation steps,high operation intensity, low experiment efficiency, various used equipment / devices, large occupied space and environmental pollution of an existing sample dissolving device. The integrated closed sample dissolving system comprises a sample dissolving tank, a heating table and a fixed sealing assembly, wherein the sample dissolving tank comprises a tank body and a cover body; the heating table isprovided with a sample dissolving tank mounting hole; and the fixed sealing assembly comprises a fixed cover plate and a closing bolt, the fixed cover plate is located above the heating table and connected with the heating table, the fixed cover plate is provided with a first screw hole, and the closing bolt abuts against the cover body through the first screw hole. The system integrates the functions of sample dissolving, acid driving and redissolving, realizes sample dissolving, acid steam collection treatment and redissolving under a closed condition, has the advantages of simple structure,small size, less used equipment, low operation intensity, high experiment efficiency and low cross contamination risk, and has great popularization potential.

Description

technical field [0001] The invention relates to the technical field of sample dissolution devices, in particular to an integrated closed sample dissolution system and method. Background technique [0002] Most modern analytical instruments such as light and mass spectrometry need to convert solid samples into solutions before they can be measured. Therefore, sample digestion is a key step in the analysis of geological samples. At present, the commonly used digestion techniques mainly include acid dissolution, burning, melting and so on. Among them, the acid dissolution method has the longest history and the highest frequency of use. This method utilizes the action of heat and / or acid to decompose a solid sample, so that the elements contained in the sample are released from the complex matrix and converted into simple chemical forms. [0003] The process of acid-digesting samples can be carried out under both open and closed conditions. The acid-dissolving method in an op...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/44
CPCG01N1/44
Inventor 周利敏温宏利王书谟陶迪
Owner NAT RESERACH CENT OF GEOANALYSIS
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