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Integrated digestion colorimetric pool

A colorimetric cell and integrated technology, which is applied in the field of digestion colorimetric cell, can solve the problems affecting the accuracy of detection data and insufficient effective optical path, so as to save sample volume and reagent consumption, high detection accuracy, and digestion reaction full effect

Inactive Publication Date: 2013-04-03
DELIN ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to take into account the pressure resistance of the main body of the straight tube digestion tank, the diameter of the tube body is generally reduced as much as possible, so that the effective optical path is insufficient, which affects the accuracy of the detection data

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Integrated digestion cuvette structure

[0020] Such as figure 1 , The integrated digestion cuvette is made of glass or quartz material, and is connected by a vertical upper tube 1, a horizontal tube 2 and a vertical lower tube 3 to form a continuous integral tube. The transverse tube 2 is used as a light channel, and a plane light-transmitting window 7 is set at the right end, and a plane light-transmitting window 7' is set at the left end; the length of the light channel is the optical path L of the incident light. from figure 1 It can be seen that the inner diameters D of the upper vertical tube 1 and the lower vertical tube 3 are much smaller than the length of the optical path L. The vertical lower tube 3 is connected with a temperature sensor insertion tube 4 for inserting a temperature sensor to monitor the temperature of the reaction solution. The outer wall of the transverse tube 2 is provided with a clamping groove 9 (formed by the intervals b...

Embodiment 2

[0023] Example 2 Application of Integrated Digestion Colorimeter in Water Quality Monitoring

[0024] use figure 1 The integral tube of the integrated digestion cuvette shown (made of quartz) has an inner diameter D of 6 mm and an outer diameter of 10 mm; the upper port of the vertical upper tube 1 and the vertical lower tube 3 The inner diameters of the lower ports of the tubes are all reduced to 1.2 mm (0.8-2 mm in general), and the optical path L of the transverse tube 3 is 20 mm. An electric heating wire of appropriate length and resistance is wound on the outer wall of the horizontal tube 2 to control the heating temperature. The temperature sensor cannula 4 is filled with heat-conducting silicone grease and placed with a Pt100 platinum resistance for monitoring the temperature of the liquid in the colorimetric cell.

[0025] Figure 5 It is a schematic diagram of a detection system for detecting water quality chemical oxygen consumption by using the integrated dig...

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Abstract

The invention relates to an integrated digestion colorimetric pool used for digestion reaction of a sample and receiving of light rays in spectrum colorimetric analysis. The integrated digestion colorimetric pool is an integrated pipe formed by sequentially connecting and continuously communicating a longitudinal upper pipe, a transverse pipe and a longitudinal lower pipe, wherein the transverse pipe is also used as an optical channel; plane light inlet windows are respectively arranged on the pipe walls at the both ends of the optical channel; a pipe diameter of the integrated pipe is less than the length of the transverse pipe; an upper end opening of the longitudinal upper pipe and a lower end opening of the longitudinal lower pipe are thread ports; and internal diameters of the two longitudinal pipes are reduced at the positions of the ports. Compared with the straight pipe type digestion pool, a total volume of the three digestion colorimetric pools can be obviously reduced; the pressure resistance is high; the trail amount is small; a solution flows inside a pipe inside the pool without residue; the digestion reaction is complete; and the detection precision is high.

Description

technical field [0001] The invention relates to a digestion colorimetric cell used for sample digestion reaction and irradiated by light in spectroscopic colorimetric analysis, especially an integrated digestion colorimetric cell. Background technique [0002] At present, the photoelectric colorimetric analysis method is widely used in chemical analysis, especially in the field of water quality monitoring, which is easy, fast and reliable to operate. This method uses chemical reagents to react with the tested components of the sample solution (hereinafter referred to as digestion reaction) to cause the solution to develop color. After being irradiated with monochromatic light of a specific wavelength, the absorbance of the digestion solution is measured with a photoelectric colorimetric instrument, and then compared with the pre-drawn The standard working curve is compared, and the concentration or content of the tested component of the sample is obtained through calculatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/03
Inventor 洪陵成王建伟
Owner DELIN ENVIRONMENTAL PROTECTION TECH
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