Particle characterization at CVAO during the 2011 Intensive VII

DOI

Mass: Mettler-Toledo UMT2 after 48 h equilibration of the impactor foils at 20 °C and 50 % rel. humidity.IC: Parts of the impactor foils (about 30 %) were extracted by the identical method in 1.5 ml high purity water (>18.1 ohm cm). Sample extracts were filtered through a 0.45 µm one-way syringe filter to remove insoluble materials prior to ion analysis. Ion analysis was performed for cations Na+, [NH4]+, K+, Mg2+, Ca2+ and anions Cl-, [NO2]-, [NO3]-, [SO4]2- and [C2O4]2-(KOH for anions and MSA for cations) and micromembrane suppression. using a standard ion-chromatography technique (ICS3000, DIONEX, USA) using automatic eluent generation For the anion separation a combination of AG18 and AS18 (2 mm) was applied while for the cation separation CG16 and CS16 (3 mm) were used. Chromatographic calibrations were carried out daily using a four point standard (Fluka, Switzerland).CE: Spectra Phoresis 1000 (TSP, USA), equipped with fused silica capillary (length: 70 cm, 63 cm to detector, ID: 75µm). For separation of dicarboxylic acids and methane sulfonic acic, the capillary was filled with a background electrolyte consisting of 10mmol l-1 p-aminobenzoic acid, 8 mmol l-1 diethylenetriamine, and 3.5 mmol l-1 aqueous sodium hydroxide (pH = 9.6). After hydrodynamic injection at 10.3 kPa for 34 s, a separation voltage of 30 kV was applied. Indirect detection was performed at 254 nm.OC/EC: modified VDI2465 Bl.2 using a C-mat 5500 at Tmax = 650 °C (OC: 8 min at 650 °C under high purity Nitrogen; EC: 8 min at 650 °C under high purity Oxygen). OM was calculated according to the paper of Turpin et al. 2000 (doi:10.1016/S1352-2310(99)00501-4) from OC using a factor of 2.TXRF: Bruker S2 Picofox on quartz wafers after 1.5 h cold plasma pyrolysis to eliminate the Nuclepore substrate.

Identifier
DOI https://doi.org/10.1594/PANGAEA.880676
Related Identifier https://doi.org/10.1594/PANGAEA.880673
Related Identifier https://doi.org/10.1594/PANGAEA.880674
Related Identifier https://doi.org/10.1594/PANGAEA.880675
Related Identifier https://doi.org/10.1594/PANGAEA.880678
Related Identifier https://doi.org/10.1594/PANGAEA.880679
Related Identifier https://doi.org/10.1594/PANGAEA.848522
Related Identifier https://doi.pangaea.de/10.1594/PANGAEA.848530
Related Identifier https://doi.pangaea.de/10.1594/PANGAEA.848528
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.880676
Provenance
Creator Müller, Konrad
Publisher PANGAEA
Contributor Leibniz-Institut für Troposphärenforschung e.V., Leipzig
Publication Year 2017
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 6920 data points
Discipline Earth System Research
Spatial Coverage (-24.871 LON, 16.848 LAT); Cape Verde
Temporal Coverage Begin 2011-01-11T14:48:00Z
Temporal Coverage End 2011-02-26T14:15:00Z