A fully automated sample pretreatment platform centered on microwave digestion

Abstract

A fully automatic sample pretreatment platform with microwave digestion as the core belongs to the field of analytical instruments. A microwave digestion cooling system, transportation device, cap screwing device, acid removal device, acid addition device, centrifuge tube rack module, digestion tank rack module, outer sleeve rack module and automatic sealing cap sealing plug device are installed on the platform; The storage port and the extraction port are set on the platform box; a turntable is set in the microwave digestion cooling system, and a safety door is set on one side of the microwave digestion cooling system; the centrifuge tube rack module, the digestion tank rack module and the outer sleeve rack module are placed in sequence. Placed on the platform; centrifuge tubes are loaded in the centrifuge tube rack module; digestion tanks with samples placed in the digestion tank rack module are loaded; outer sleeves are placed in the outer sleeve rack module; The cap sealing plug device is loaded with a sealing cap and a sealing plug; the transportation device is a mechanical arm that can move controllably in three directions; the acid adding and constant volume device is provided with multiple acid adding channels for selection.

Description

technical field [0001] The invention belongs to the field of analytical instruments, in particular to a sample pre-processing device using microwave digestion. Background technique [0002] As we all know, food safety and environmental pollution have seriously affected people's health. With the development of society, the state has paid more and more attention to the monitoring of food safety and the control of environmental pollution. The ever-increasing variety and quantity of samples to be analyzed and monitored puts unprecedented pressure on analytical experimenters. [0003] After investigation, during the analysis of a sample, the time spent on sample pretreatment accounted for 61% of the entire sample analysis time. Clearly, sample preparation has become a bottleneck preventing us from improving analytical efficiency. [0004] As the pretreatment process of atomic absorption, liquid chromatography and other analytical instruments with microwave digestion as the cor...

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Problems solved by technology

[0005] This series of pre-processing actions, except for microwave digestion of samples, cooling of samples, and removal of acid in samples, the rest need to be done manually, which consumes a lot of time and energy.

In addition, these actions are accompanied by acid, which affects the health of operators

[0006] It is understood that the pretreatment process of analytical instruments such as atomic absorption and liquid chromatography in China and even in the world is still at the level of manual operation.

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