A method for measuring black carbon concentration and mixed state ratio in snow and ice samples

Abstract

The invention provides a sample injection processing device used for measuring the black carbon concentration and the mixed state ratio in a snow ice sample. The device comprises a vacuum pump, a three-way component, a movable adapter, a quartz freeze-drying container, a compressed air source, a cumulative flow meter and a flexible sampling bag. The vacuum pump and the compressed air source are connected with the movable adapter through the three-way component. A first valve is arranged on one end, which is close to the vacuum pump and the compressed air source, of the movable adapter. A cumulative flow meter is connected with the gas path of the compressed air source to measure the air flow output by the compressed air source. A movable joint is connected with the quartz freeze-drying container. A second valve is arranged in one end, which is away from the movable joint, of the quartz freeze-drying container. The quartz freeze-drying container is connected with the flexible samplingbag through the second valve. The sample injection processing device is connected with a single-particle black carbon photometer to detect a sample, which can retain the original form of black carbonin snow ice and can more accurately determine the black carbon concentration and the mixed state ratio.

Description

technical field [0001] The invention relates to a device and method for measuring particles in snow and ice samples, in particular to a device and method for measuring black carbon concentration and mixed state ratio in ice and snow samples. Background technique [0002] Atmospheric aerosol is a general term for solid and liquid particles suspended in the atmosphere. It is very light enough to be suspended in the air. At present, it mainly includes 6 categories and 7 types of aerosol particles, namely: dust aerosol, carbon aerosol ( black carbon and organic carbon aerosols), sulfate aerosols, nitrate aerosols, ammonium salt aerosols, and sea salt aerosols. Among them, black carbon is a common component in atmospheric aerosols. It is a product of incomplete combustion of carbonaceous substances, and generally accounts for about 20% of the mass concentration of aerosols in the atmosphere. It is of great significance in the fields of cloud physics, environmental science, and t...

AI Technical Summary

Problems solved by technology

Especially for particles that exist in the mixed state of black carbon and other components such as sulfate, melting, atomization and other processes may seriously damage the original state of black carbon in solid samples of snow and ice, thus seriously distorting the measurement results and ultimately leading to inaccurate evaluation Actual effects of black carbon in snow and ice

Images