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| Main Authors: | , , , , , , , , |
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| Format: | Recurso digital |
| Language: | |
| Published: |
Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.20408428 |
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Table of Contents:
- <p>The folder "dataset" contains three subfolders, named PUY, CMN and REU, containing themselves the subfolders corresponding to the cloud samples, identified by date. Each samples folder contains three CSV files (";" separator) corresponding to the three analytical replicates acquired with the FT-ICR MS. The first column reports the m/z and the second one the intensity of the signal (counts). </p> <p>FT-ICR MS acquisition was performed using the mass spectrometer FT-ICR solariX XR 9.4T (Bruker, Germany; part of the Infranalytics federation (CNRS FR2054) and located at Laboratoire de Chimie Moléculaire (LCM), Ecole Polytechnique de Massy Palaiseau, France). The instrument is equipped with an electrospray ionization operated in negative ion mode. A 2µL/h infusion flow rate is used to directly inject samples into the mass spectrometer and three analytical replicates are recorded accumulating 100 scans for each sample. Before and after each injection, the capillary is cleaned thrice with methanol. The needle voltage was set to 4.1kV. To achieve a stable ion current with the shortest ion injection time into the mass analyzer, parameters such as temperature vaporization, nebulizer gas pressure, and drying gas flow rate were adjusted as follow: 200°C, 1bar, 4L/min. The FT-ICR MS was calibrated every day prior to analysis with tunemix calibrant from Agilent. Spectra are treated with Bruker Data Analysis, extracting peaks with S/N > 7 and with internal recalibration using moleculare formula listed in Pailler et al. (2024). We kept into account for our research work only peaks > 100 Da. </p>