Full-automatic sample injector capable of exchanging sample positions, and element analyzer

Abstract

The invention provides a full-automatic sample injector capable of exchanging sample positions. The full-automatic sample injector comprises a disc body, N hole positions, N telescopic rods, a sampleoperation track, an electromagnetic power system and a rotating shaft, wherein the disc body is used for bearing the electromagnetic power system and the rotating shaft; the N hole positions are arranged to form two or more sample injection rings, in a working state, all the hole positions of one of the sample injection rings are located in the sample operation track, and all the hole positions ofthe other sample injection rings are located on the respective sample positions; one end of each telescopic rod is connected with the rotating shaft, the other end of the telescopic rod is fixedly connected with the corresponding hole position, and the telescopic rods drive the hole positions to rotate when rotating around the rotating shaft; and under the effect of the electromagnetic power system, the telescopic rods can expand or contract, and thus the hole positions are switched between the sample positions and the sample operation track. According to the full-automatic sample injector switching, it can be ensured that an element analyzer can operate automatically for 24 hours all day long, the timeliness of sample determination is met, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of organic element analysis, in particular to a fully automatic sample injector and an element analyzer capable of changing sample positions. Background technique [0002] In terrestrial ecosystems, soil organic carbon and nitrogen are important components of soil organic matter. They are an important link connecting soil, plants, animals and microorganisms in the ecosystem. Sustainable development plays an important role and is one of the most concerned indicators in soil science research. [0003] The traditional methods for determining organic carbon and total nitrogen in soil science are the potassium dichromate volumetric method and the Kjeldahl nitrogen method, which have the advantages of low cost and the disadvantages of cumbersome operation, a large amount of labor, and large random errors, which are not conducive to mass production. Rapid determination of samples. With the rapid development of an...

AI Technical Summary

Problems solved by technology

[0003] The traditional methods for determining organic carbon and total nitrogen in soil science are the potassium dichromate volumetric method and the Kjeldahl nitrogen method, which have the advantages of low cost and the disadvantages of cumbersome operation, a large amount of labor, and large random errors, which are not conducive to mass production. Rapid Determination of Samples

With the rapid development of analytical instruments, carbon and nitrogen mode elemental analyzers are more and more used in the determination of soil carbon and nitrogen content. The existing elemental analyzers are limited by the sampling positions on the sampling tray (80 hole positions) , the time of continuous automatic operation is limited, the efficiency of data output is limited, and it is impossible to meet the requirements of rapid determination of large batches and perishable samples on the instrument line

Images