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Discussion papers
https://doi.org/10.5194/acp-2018-985
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-2018-985
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 06 Dec 2018

Research article | 06 Dec 2018

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This discussion paper is a preprint. It is a manuscript under review for the journal Atmospheric Chemistry and Physics (ACP).

Nutrients Dissolution Kinetics of Aerosols at Qianliyan Island, the Yellow Sea by a High Time-resolution Nutrient Dissolution Experiment, Potential Linkages with Inorganic Compositions and P solubility controlled factors

Ke Zhang1,2, Lijun Han1,a, Sumei Liu1,2, and Lingyan Wang1,2 Ke Zhang et al.
  • 1Key Laboratory of Marine Chemistry Theory and Technology MOE/College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China
  • 2Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
  • apresently at: Hebei Province Environmental Monitoring Center

Abstract. A series of high time-resolution nutrient dissolution experiments were designed to determine the soluble fraction of atmospheric nutrients and reveal the short-time dissolution processes, patterns and kinetics of nutrient elements in aerosols. Aerosols that represented an important part of atmospheric transport path over the East Asian to West Pacific were leached by Milli-Q water and aged seawater at gradient pHs for certain time duration. Varied nutrient dissolution curves indicated that aerosol inorganic N, P and Si species dissolution reactions were quasi-first-order. Particularly, prominent factors influenced P solubility were source and acidity. Ratios of acid-soluble to water-soluble nutrient concentrations in high time-resolution dissolution experiments and ultra-sound extractions were 1.0 (0.9–1.1) for NH4+ and NO3, 2.4 (2.1–2.6) for PO43− and 2.5 for SiO32−, demonstrating that inorganic N species were inclined to immediate and complete dissolution due to fine particles formed by gas-particle transformation, inorganic P (Fe-P, Ca-P and De-P) and Si were tended to dissolve more in strong acidity mainly because of coarse soil-derived mineral particles. Compared with the slow dissolution of inorganic P and Si, the rapid dissolution of inorganic N can affect the composition of marine nutrients and marine primary productivity.

Ke Zhang et al.
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Short summary
We did high time-resolution nutrient dissolution experiments used aerosols collected on atmospheric mass transport path over the East Asian to West Pacific at Qianliyan island. We obtained the rapid dissolution of inorganic N species and slow dissolution of inorganic P and Si, depicted nutrient dissolution curves by math Equations and explained dissolution patterns by linkages with aerosol inorganic components and their dissolution properties.
We did high time-resolution nutrient dissolution experiments used aerosols collected on...
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