Ocean dissolved inorganic carbon in situ measuring instrument

Abstract

The invention relates to an ocean dissolved inorganic carbon in-situ measurement instrument, which relates to ocean monitoring, and is provided with a four-way valve, an injection pump, an acidification reactor, a CO2 membrane separation and absorbing device, a CO2 selective permeable membrane capillary tube, a C4D detector, a detector capillary tube, a signal generator, an acid liquid constant flow pump, an absorption liquid constant flow pump, a microprocessor, a computer, a standard sample storage tank, an acid liquid storage tank, an absorption liquid storage tank, a pure water circulator, a standard sample diluter, an acid liquid diluter and an absorption liquid diluter, wherein a seawater sample inlet, the standard sample diluter and an outlet of the pure water circulator are connected with the four-way valve and are then connected with the acidification reactor through the injection pump; the acidification reactor is provided with an acid dosing port; an outlet of the acidification reactor is connected with a sample inlet of the CO2 membrane separation and absorbing device; at least one CO2 selective permeable membrane capillary tube is arranged in the CO2 membrane separation and absorbing device; an absorption liquid outlet of the capillary tube is connected with the C4D detector; waste liquid of an outlet of the C4D detector is connected with the pure water circulator.

Description

technical field [0001] The invention relates to ocean monitoring, in particular to an in-situ measuring instrument for ocean dissolved inorganic carbon with high precision, high time resolution and micro flow rate, which is suitable for ship-borne navigation. Background technique [0002] Seawater dissolved inorganic carbon (Dissolved Inorganic Carbon, DIC) is an indispensable key parameter in the study of marine biogeochemical processes. It is the sum of the carbon concentrations of various inorganic carbonates, bicarbonates, carbonic acid and carbon dioxide gases in the ocean. DIC has become an important basic parameter in the study of ocean acidification and an important parameter for understanding the production process of marine organisms. Accurate, fast and convenient measurement of the temporal and spatial distribution and variability of seawater DIC concentration with high spatial and temporal resolution is useful for understanding ocean acidification and ocean respo...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the existing DIC on-site observation technology with complex devices, low measurement accuracy, CO 2 Problems such as troublesome gas lift and measurement, large consumption of added reagents, and great influence from on-site observation environment, provide a solution based on C 4 D detection technology, high precision, high time resolution and micro flow rate are suitable for marine dissolved inorganic carbon in-situ measurement instrument for ship-borne observation

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