Intelligent sample digestion treatment device

Abstract

The invention discloses an intelligent sample digestion treatment device which comprises an operation platform and a functional cabin; the operation platform comprises a cabinet body and a platform panel; an automatic digestion reagent preparation system, an automatic digestion reagent heating system and a heating digestion system are placed in the cabinet body; the automatic digestion reagent preparation system can independently store a plurality of digestion reagents and pump out single or mixed digestion reagents in proportion, and the automatic digestion reagent heating system preheats the digestion reagents according to a set temperature; an automatic digestion reagent injection mechanism is arranged on one side of the functional cabin, and an automatic sample test tube clamping mechanism is arranged on the other side of the functional cabin; a controller is fixed outside the operating platform; the automatic digestion reagent preparation system, the automatic digestion reagent heating system, the heating digestion system, the automatic digestion reagent injection mechanism and the automatic sample test tube clamping mechanism are all connected with the controller. The device can automatically prepare mixed reagents in proportion, preheat the reagents and automatically finish the taking and placing operation of sample test tubes.

Description

technical field [0001] The invention relates to the field of inorganic sample inspection, in particular to an intelligent sample digestion and processing device. Background technique [0002] Samples such as soil, tobacco, meat, feed and ore usually require digestion or other pretreatment steps before analysis. The pretreatment of the sample is usually to add strong acid to the sample, digest it at high temperature, and make the digested sample to a preset volume, and then analyze and detect. At present, most of the known digesters are manually operated, which requires manual acid strengthening and manual volume adjustment, and strong acids are strongly corrosive, which will cause great harm to the operator and the laboratory environment. In addition, the manual operation is complicated, the sample processing time is too long, the efficiency is low, and it may contaminate the sample, thereby bringing human error to the sample detection and affecting the analysis result. ...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned known technologies all have the following defects: 1, all are by manually strengthening the acid, which is easy to cause harm to the human body and the environment

And the amount of solvent or sample added cannot be accurately controlled, so the accuracy of adding solvent or sample cannot be guaranteed

2. The work content is complicated

Since there is no automatic constant volume function, the operator needs to keep monitoring during the experiment to prevent the solvent from being "evaporated to dryness"

3. The sample cannot be completely digested

[0007] 1. Wet digestion method can be divided into nitric acid digestion method, nitric acid-perchloric acid digestion method, nitric acid-sulfuric acid-perchloric acid digestion method, nitric acid-hydrogen peroxide digestion method and nitric acid-sulfur acid digestion method according to the digestion reagent. The reagents involved are nitric acid, hydrogen peroxide, hydrofluoric acid, sulfuric acid, perchloric acid and hydrochloric acid. The above reagents are mostly mixed in proportion to completely digest the sample and prevent the target substance from remaining in the sample. However, the sample digestion provided by the invention The processing unit cannot automatically prepare mixed digestion reagents in proportion

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