Automatic acidification reaction device for seawater sample

A reaction device and sample technology, applied in the direction of analysis of materials, instruments, etc., can solve the problems of being unable to meet the requirements of on-site sample testing at sea, and achieve the effects of avoiding subjective judgment errors, high air tightness, and improving acquisition capabilities

Inactive Publication Date: 2013-01-16
SECOND INST OF OCEANOGRAPHY MNR
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  • Abstract
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AI Technical Summary

Problems solved by technology

Due to the need for a large number of manual operations and subjective judgments, this technical solution is only suitable for laboratory water sample determination, and cannot meet the needs of offshore on-site sampling.

Method used

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  • Automatic acidification reaction device for seawater sample
  • Automatic acidification reaction device for seawater sample
  • Automatic acidification reaction device for seawater sample

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Embodiment Construction

[0019] The present invention is elaborated below in conjunction with specific example:

[0020] Such as figure 1 As shown, the seawater sample automatic acidification reaction device in the present invention includes a four-channel acid-resistant reaction tube 1, a control circuit board 2, a digital syringe pump 3 with a six-channel switching valve, a mass flow controller 4, three electromagnetic Valves 5, 6, 7 (two-position two-way solenoid valve), one solenoid valve 8 (two-position three-way solenoid valve).

[0021] Among them, the structure of the four-channel acid-resistant reaction tube 1 is: its main body is a columnar cylinder made of acid-resistant materials, with four ports, port a is the sample inlet (including blank solution, seawater standard solution, seawater sample and reaction reagent ); interface b is N 2 Carrier gas inlet; port c is CO 2 Detection gas outlet; interface d is the waste liquid outlet.

[0022] The digital syringe pump 3 has a six-channel sw...

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Abstract

The invention relates to a seawater detection technology, and aims to provide an automatic acidification reaction device for a seawater sample. The device comprises a CO2 analyzer, a four-channel acid-proof reaction tube and a digital injection pump with a six-channel switching valve. Various reagents are switched through two-position two-way electromagnetic valves and a two-position three-way electromagnetic valve. In the running process of the device, the whole process comprising sample introduction, acid addition, reaction, gas stripping and the like is controlled through a computer program, and the sample introduction quantity and reaction time of each step can be accurately controlled. Compared with the conventional laboratory detection method, the scheme has the advantages that the addition of an indicator is avoided, and subjective judgment errors of an operator are avoided; a small amount of sample is required, a reactor is convenient to operate, and a container is high in air tightness; and more importantly, the method is applicable to sailing continuous automatic determination, the capability of acquiring oceanic field scientific research data can be greatly improved, and dissolved organic carbon in surface seawater can be continuously and accurately determined in a sailing way.

Description

technical field [0001] The invention relates to an automatic sampling and reaction control device for seawater samples, in particular to an automatic acidification reaction device for seawater samples. Background technique [0002] The ocean plays a very important role in global material circulation and climate change. The rapid and accurate determination of chemical parameters such as dissolved inorganic carbon (DIC, Dissolved Inorganic Carbon), dissolved organic carbon (DOC, Dissolved Organic Carbon), and nutrient salts in seawater is a systematic study of biogeochemical characteristics such as carbon and nutrient elements in seawater and Uncovering the basis of key processes in the ocean's carbon cycle plays an important role in informing aspects such as photosynthesis and respiration that occur in marine ecosystems. [0003] After years of application and improvement, the laboratory measurement equipment and methods for the above seawater chemical parameters have become...

Claims

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Application Information

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IPC IPC(8): G01N35/00
Inventor 郑旻辉潘建明杨俊毅刘敬彪蔡文郁
Owner SECOND INST OF OCEANOGRAPHY MNR
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