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Full-automatic microwave pretreatment device

A microwave pre-processing and fully automatic technology, applied in the field of microwave applications, can solve the problems of poor repeatability of processing effect, cumbersome operation, and influence on analysis results, and achieve the effects of improving subsequent detection accuracy, reducing the number of equipment, and simplifying the experimental area

Inactive Publication Date: 2017-06-20
PREEKEM SCI INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only is there a lot of equipment, the operation is cumbersome, but also it is easy to introduce human error, resulting in poor repeatability of the sample pretreatment effect and affecting the subsequent analysis results

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] like figure 1 As shown, the fully automatic microwave pretreatment device of this embodiment includes a sample addition module, a reagent addition module, a microwave reaction module, an acid removal and constant volume module, a mechanical arm for moving the reaction tube between modules, and a module connected to each module respectively. main control module.

[0079] The sample addition module includes a sample injection chamber, an adder, and a weighing device. According to the shape of the sample, the sampling chamber can be a solid sampling chamber or a liquid sampling chamber; the liquid sample enters the liquid sampling chamber and enters the reaction tube through the liquid feeder, and the solid sample enters the solid sampling chamber through the sample pulverizer After crushing, it enters the reaction tube from the sample adder. The reaction tube is connected with the weighing device, and the weighing device feeds back the measurement result of the reaction...

Embodiment 2

[0107] The components of this embodiment are basically the same as those of Embodiment 1, the difference is that the control system further includes a positioning module connected to the mechanical arm, and the positioning module is connected to the main control module of the control system. like Figure 4 As shown, the positioning module is connected with the raw material addition module, the microwave reaction module, the acid and constant volume module and the external equipment; the external equipment refers to atomic absorption spectroscopy (AAS), inductively coupled plasma mass spectrometer (ICP-MS) and Detection equipment such as inductively coupled plasma atomic emission spectrometer (ICP-OES) or cleaning equipment that can clean test tubes, sealing caps and other components.

[0108] According to the precise positioning of the positioning module, the control device controls the moving module to move the reaction container between the raw material adding module, the mi...

Embodiment 3

[0110] When using a detection instrument with relatively strong acid resistance, some samples can be directly loaded for detection without acid removal treatment after digestion. Such users do not need to configure the acid removal and constant volume module. The schematic diagram of the system structure framework in this embodiment is as follows Figure 5 As shown, the electronic control block diagram is shown in Image 6 As shown, the system workflow is as follows Figure 7 As shown, the configuration of other parts is similar to that of Embodiment 1 or Embodiment 2.

[0111]The fully automatic microwave pre-processing device of this embodiment includes a sample adding module, a reagent adding module, a microwave reaction module, a moving module for moving reaction tubes among the modules, and a main control module connected to each module respectively. After the sample and reagent react in the microwave reaction module, the product is directly sent to the external device b...

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Abstract

The invention discloses a full-automatic microwave pretreatment device, which comprises at least one of a raw material adding module and an acid-removing constant-volume module, a microwave reaction module and a control system, wherein the control system is connected with the raw material adding module, the microwave reaction module and the acid-removing constant-volume module; the raw material adding module is used for controlling addition of a reaction sample and a reaction reagent; the microwave reaction module is used for performing microwave reaction of the reaction sample and the reaction reagent; the acid-removing constant-volume module is used for performing acid-removing constant-volume treatment on a reaction product; the control system is used for controlling the raw material adding module, the microwave reaction module and the acid-removing constant-volume module according to preset parameters. The full-automatic microwave pretreatment device disclosed by the invention has a reasonable structural design, is simple to operate, avoids personal jury of varieties of acid and reagent to operators in a pretreatment process, avoids work injury accidents caused by high temperature and high pressure in a decomposition process, guarantees standardization of the pretreatment process, prevents that pretreatment results are inaccurate due to artificial uncertain factors, improves work efficiency and improves sample reaction efficiency.

Description

technical field [0001] The invention relates to the field of microwave application technology, in particular to an automatic processing device and method for sample pretreatment. Background technique [0002] Sample pretreatment, that is, the various pretreatment methods used before the sample is loaded on a detection instrument such as AAS (Atomic Absorption Spectrometry) or HPLC (High Performance Liquid Chromatography, high performance liquid chromatography), including organic and inorganic pretreatments As far as inorganic sample pretreatment is concerned, the microwave sample pretreatment method is currently the most widely used due to its high efficiency and rapidity, including sampling, adding acid, assembling closed digestion tanks, digestion, sample transfer, and acid flushing to volume and other steps. In the actual sample detection process, these pretreatment steps are operated separately, and generally are manual operations. [0003] Sampling is generally perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/44
CPCG01N1/02G01N1/28G01N1/44
Inventor 江成德倪晨杰
Owner PREEKEM SCI INSTR
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