Solid automatic sample introduction device and method for organic carbon analyzer

Abstract

The invention belongs to the technical field of measurement of organic carbon contents of solid samples, and discloses a solid automatic sample introduction device and method for an organic carbon analyzer. Both sides of the top of an automatic sample introduction tray are filled with sealing rings, porcelain boat chambers are arranged on the inner sides of the sealing rings, and a lifting deviceis arranged at a low end of the automatic sample introduction tray; a push-push rod is installed at the low end of each porcelain boat chamber; an outer wall rail is fixedly installed on an outer wall, and an inner wall rail is fixedly installed on an inner wall; and the both ends of the automatic sample introduction tray are supported by the outer wall rail and the inner wall rail. The solid automatic sample introduction device provided by the invention uses rotating and automatic lifting devices of a porcelain boat rack in the sample introduction tray to realize the sample introduction and replacement of solid samples without opening a sample cell, thereby avoiding the introduction of air during the detection process, eliminating air peaks and baseline fluctuations, and realizing the continuity of the detection and greatly improving the efficiency of analysis and test; and the solid automatic sample introduction device provided by the invention avoids the corrosion of the sample cellcaused by knocking down and accidental addition or liquid leakage, and protects the sample cell.

Description

technical field [0001] The invention belongs to the technical field of measuring carbon dioxide content of solid samples, and in particular relates to a solid automatic sampling device and method for an organic carbon analyzer. Background technique [0002] Currently, the closest prior art: [0003] The existing instrument (Shimadzu TOC-L+SSM5000) mainly detects the content of carbon dioxide based on the non-dispersive infrared detector (NDIR) when analyzing solid samples. The specific operation is as follows: First, put the weighed sample in the ceramic boat, push it into the heating chamber for the determination of the total carbon content, then put another weighed sample in the ceramic boat, add acid, push it into the Another heating chamber is used for the determination of inorganic carbon content, and the content of organic carbon in the sample is calculated by subtraction method. [0004] During actual operation, when the sample chamber is opened for sample addition ...

AI Technical Summary

Problems solved by technology

[0008] (1) When the existing technology analyzes solid samples for sample addition or replacement, it is easy to cause the actual sample detection to end early, and the sample detection fails

[0009] (2) The device of the sample cell is designed as a multi-turn screw knob, which takes time and effort to open and close, which affects the efficiency of detection

[0010] (3) In the prior art, acid solution is added during the determination of solid sample inorganic carbon to add acid manually to the quantitative liquid separator, and the acid bottle has no fixing device, which is easy to knock over

[0012] (1) Sealing problem during sample injection

[0013] (2) Injection continuity between different samples

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