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Mixer and circulating type photometric testing automatic analyzer

An automatic analysis and mixer technology, applied in fluid mixers, mixers, analysis materials, etc., can solve the problems of incompetent on-site long-term automatic continuous monitoring, etc., and achieve fast sample measurement, improve utilization, and reduce costs. Effect

Active Publication Date: 2014-05-14
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the deficiencies of existing flow-through analyzers make it difficult to perform long-term automatic and continuous monitoring on site

Method used

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  • Mixer and circulating type photometric testing automatic analyzer
  • Mixer and circulating type photometric testing automatic analyzer
  • Mixer and circulating type photometric testing automatic analyzer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A flow-through automatic analyzer for photometric detection, comprising the above-mentioned mixer, an automatic sampling valve 6, a reagent selection valve 17, a three-way valve 14, a reagent pump 18, a water sample pump 10, a multi-channel switching valve, and a reagent quantitative loop 19 , Spectroscopic detection device and control circuit. Each water sample inlet of the automatic sampling valve 6 is used to connect each water sample to be tested, and the common channel 8 in the middle is connected to the second connection port of the multi-channel switching valve. The inlet and outlet of the water sample pump 10 are respectively connected with the first connection port of the multi-channel switching valve and the liquid inlet pipe 1 of the mixer. The spectroscopic detection device includes a light source 11 , a photodetector 13 and a flow cell 12 . The upper outlet pipe 2 of the mixer is directly connected to the first connection port of the three-way valve 14, th...

Embodiment 2

[0047] Flow-through Photometric Automatic Chemical Analyzer Using Liquid Core Waveguide Long Optical Path Flow Cell and Simultaneous Determination of Dissolved Trace Fe(II) and Fe(II+III) in Water

[0048] Such as Figure 6 and Figure 7 As shown, in addition to replacing the Z-shaped flow cell in Embodiment 1 with a liquid core waveguide long optical path flow cell 12 with an optical path length of 250 cm, the instrument components, pipeline connections, control circuits and reagents used in this embodiment and their Concentration etc. are all consistent with embodiment one.

[0049] When measuring water samples, the analyzer is first in the Figure 6 In the sample injection state, connect the first interface and the second interface, the third interface and the fourth interface, the fifth interface and the sixth interface, the seventh interface and the eighth interface. Start the water sample pump 10 to pump the sample to be tested into the analyzer through the water samp...

Embodiment 3

[0057] Flow-through photometric detection automatic chemical analyzer using liquid core waveguide long optical path flow cell and determination of trace nitrite in seawater

[0058] Such as Figure 6 and Figure 7 As shown, the instrument components, pipeline connection, control circuit and flow cell 12 of the present embodiment are all consistent with the second embodiment, except that the reagents in the chromogenic reagent bottle 22 and the reducing reagent bottle 23 are replaced with concentrations of 6.4 g / L sulfonamide solution and naphthaleneethylenediamine hydrochloride solution with a concentration of 0.72g / L, wherein the sulfonamide solution is prepared in 1.4mol / L hydrochloric acid solution; the light source 11 is a light-emitting diode with an emission wavelength of 540nm instead.

[0059] The operating steps of this embodiment are consistent with Embodiment 1, that is, the analyzer is at first Figure 6 In the sample injection state, start the water sample pump ...

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Abstract

A mixer and a circulating type photometric testing automatic analyzer are used for testing specific components of solutions or studying on chemical reaction dynamics. The mixer comprises a liquid inlet tube, a mixer body, an upper liquid outlet pipe communicated with the inner cavity of the mixer body and a lower liquid outlet pipe communicated with the inner cavity of the mixer body. One end of the liquid inlet pipe is vertically inserted into the inner cavity from bottom to top and is communicated with the inner cavity, the upper liquid outlet pipe is connected with the top portion of the mixer body, and the lower liquid outlet pipe is connected with the bottom of the mixer body. The automatic analyzer further comprises a mixer, an automatic injection valve, a reagent selector value, a three-way valve, a reagent pump, a water sample pump, a multi-channel switching valve, a reagent quantitative loop, a spectrophotometric detector and a control circuit. By the adoption of the automatic analyzer, the photometric testing is not interfered by air bubbles in a flow path, automation degree is high, the automatic sample feeding and the on-line mixing are added, no reagents need to be added repeatability, the utilization rate of reagents is improved efficiently, operation is flexible, the degree of reaction can be controlled by adjusting the mixing time, and the sensitivity can be adjusted to meet the measurement requirements of target objects with different concentrations.

Description

technical field [0001] The invention relates to a chemical analyzer equipment for spectrophotometric detection, especially a kind of equipment used for the determination of specific components in a solution or the research of chemical reaction kinetics, fully automatic, high accuracy, not affected by bubbles in the flow path, and can realize A mixer with multiple analysis and detection functions and a flow-through automatic analyzer for photometric detection with the mixer. Background technique [0002] In order to save labor resources and meet the needs of rapid analysis and testing of sample chemical parameters, researchers at home and abroad have developed a variety of automated rapid analysis instruments. In the 1950s, companies such as Technicon in the United States developed an automatic analyzer named Auto-Analyzer based on the bubble interval continuous flow analysis principle proposed by Skeggs, pioneering the transformation of samples, reagents and analysis operati...

Claims

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Application Information

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IPC IPC(8): B01F5/00G01N35/00G01N21/31
Inventor 黄勇明苏海涛袁东星李权龙
Owner XIAMEN UNIV
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