Dilution method of deep sea in-situ gradient circulation dilution device

Abstract

The invention provides a dilution method of a deep sea in-situ gradient circulation dilution device. The device comprises a dilution cavity, a pump, a first four-way distribution valve, a second four-way distribution valve, first two-way distribution valves, a plurality of parallel gradient dilution channels, a first reagent bag and a second reagent bag. Any one of the plurality of parallel gradient dilution channels is formed by connecting a plurality of two-way distribution valves; and a diluent is stored in the first reagent bag; a standard solution is stored in the second reagent bag. Thedeep sea in-situ gradient circulation dilution device is provided with the plurality of parallel gradient dilution channels, and circular dilution can be carried out at the same time, so that the userequirements of a rear-end sensing analysis instrument can be greatly met; and besides, the deep sea in-situ gradient circulation dilution device can carry a high-concentration standard solution and dilute the standard solution into solutions with a plurality of concentration gradients for in-situ correction of the instrument, so that the problem of baseline drift in the long-term use process of the instrument is solved.

Description

technical field [0001] The invention relates to marine biogeochemistry, in particular to a dilution method of a deep sea in-situ gradient circulation dilution device. Background technique [0002] In the long-term detection process of underwater in-situ environment, under normal circumstances, the detected components such as metal ions and nutrient salts are usually relatively low in content, and when some emergencies occur, such as hydrothermal eruptions, landslides, etc. , the content of these detected components will rise sharply, reaching about 100-10000 times that of the conventional environment. How to simultaneously realize the measurement of key components in the conventional environment and the environment when extreme events erupt A problem faced. [0003] In order to ensure high measurement accuracy, traditional sensing analysis instruments usually have a limited measurement range; while some instruments with a wide measurement range have low measurement accuracy...

AI Technical Summary

Problems solved by technology

[0003] In order to ensure high measurement accuracy, traditional sensing analysis instruments usually have a limited measurement range; while some instruments with a wide measurement range have low measurement accuracy; some instruments use multiple probes to solve this problem. unit to cover a relatively wide measurement range, but this has caused a large volume and power consumption of the instrument, which is not convenient for on-site operations

[0004] At the same time, during the long-term in-situ measurement of the instrument, the baseline drift problem cannot be ignored. If the in-situ calibration is not performed, the error of the instrument will accumulate, resulting in the loss of scientific data results.

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