Biomass Burning Enhanced the Contribution of Biogenic Sources to Sulfate Aerosol in Subtropical Cities

Published: 19 December 2022| Version 1 | DOI: 10.17632/vt89b7fgw4.1
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Description

The original data of water-soluble ions, stable sulfur isotope, stable oxygen isotope, organic carbon, and elemental carbon in PM2.5 over Guangzhou were acquired by Off-line sampling and laboratory analysis. Trace gases and meteorological data in Guangzhou were acquired by online equipment.

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Water-soluble ions were measured by ion chromatography (Metrohm). OC and EC contents were analyzed by thermal-optical carbon analyzer (Sunset Laboratory Inc). Isotopic analysis: The δ34S values (‰) were measured by a DELTA V Advantage isotope ratio mass spectrometer. BaSO4 samples was treated used the diethylenetriaminepentaacetic acid dissolution and re-precipitation methods for determining oxygen isotope (δ18O-SO42-). Meteorological parameters: Temperature, relative humidity, wind speed, and atmospheric pressure were also acquired by a portable weather analyzer (WXT520, Vaisala, Finland). Trace gas: concentrations of trace gases (NO2, SO2, O3, and CO) were acquired from online equipment located at the sampling site. The online equipment included a gas filter analyzer (Thermo Scientific, Model 48i) to measure CO, a pulse fluorescence analyzer (Thermo Scientific, Model 43iTLE) to measure SO2 and O3, and a chemiluminescence apparatus (Thermo Scientific, Model 42iTL) to measure NO2. Sulfate sources were apportioned by ISO source model combined with δ34S values.

Institutions

Guangzhou Institute of Geochemistry

Categories

Environmental Science

Funding

National Natural Science Foundation of China

42192510

National Natural Science Foundation of China

41673009

National Natural Science Foundation of China

41977177

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