Atmospheric nitrogen sedimentation intelligent collection and online analysis system based on underlying surface substitution

Abstract

The invention provides an atmospheric nitrogen sedimentation intelligent collection and online analysis system based on underlying surface substitution. The system comprises a sample collection moduleused for performing dry sedimentation and wet sedimentation synchronous separation and collection to obtain collected liquid, a sample pretreatment module used for pretreating the collected liquid toobtain a to-be-detected sample, a sample injection control and online analysis module used for controlling sample injection of the to-be-detected sample and measuring the nitrogen concentration of each component, and a data analysis module used for obtaining the nitrogen sedimentation flux according to sample parameters, wherein the sample parameters comprise the sample volume, the nitrogen concentration of each component and the area of the sample collection module. According to the invention, an overall design scheme of the modules of an atmospheric nitrogen settlement online monitoring andanalysis system is completed through a modular and hierarchical design principle, a pure water preparation system, an ultrasonic generator, a meteorological observation device, a data acquisition andtransmission device and the like are integrated, and an unattended complete intelligent atmospheric nitrogen settlement online monitoring system is realized.

Description

technical field [0001] The invention relates to the field of atmospheric nitrogen deposition analysis, in particular to an intelligent collection and online analysis system for atmospheric nitrogen deposition based on the substitution of underlying surfaces. Background technique [0002] Atmospheric nitrogen deposition is an important component of the nitrogen cycle, and has undergone profound changes in recent years under the dual influences of nature and man-made. Since the middle of the 20th century, with the rapid consumption of fossil fuels, the substantial increase in the use of chemical nitrogen fertilizers, and the rapid development of animal husbandry, human activity-induced reactive nitrogen emissions have increased sharply, and atmospheric nitrogen deposition is linearly related to reactive nitrogen emissions. As the intensity of human activities continues to increase, reactive nitrogen emissions will increase significantly, and atmospheric nitrogen deposition wil...

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Problems solved by technology

However, the results obtained by different monitoring methods are often quite different, and the in-situ monitoring of atmospheric nitrogen deposition has more and more demands for unattended, system stability and intelligent analysis (Huang et al., 2017)

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