Instrument: Alpkem RFA300

Acronym: Alpkem RFA300
External Identifier: skos:closeMatch: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0414/

Description

A rapid flow analyser (RFA) that may be used to measure nutrient concentrations in seawater. It is an air-segmented, continuous flow instrument comprising a sampler, a peristaltic pump which simultaneously pumps samples, reagents and air bubbles through the system, analytical cartridge, heating bath, colorimeter, data station, and printer. The RFA-300 was a precursor to the smaller Alpkem RFA/2 (also RFA II or RFA-2).

Dataset NamePI-Supplied DescriptionPI-Supplied Name
Fluorescence dissolved organic matter (fDOM) analysis of inhalant and exhalent water samples from sponges studied at an artificial reef off the coast of the Florida Keys, USA in August 2021Alpkem RFA 300™ components were used to measure silicic acid, nitrate plus nitrite, and nitrite. Alpkem RFA 300
Dissolved nutrient data from RVIB Nathaniel B Palmer cruise (NBP18-01) in the Amundsen and Ross Seas from December 2017 to March 2018Alpkem rapid flow analyzer (RFA) 300 components were used to measure silicic acid, nitrate+nitrite, and nitrite. Alpkem rapid flow analyzer (RFA 300)
Time-series Niskin-bottle sample data from R/V Hermano Gines cruises in the Cariaco Basin from 1995 through 2017 (CARIACO Ocean Time-Series Program)These samples were analyzed on an ALPKEM RFA II. ALPKEM RFA II
Nutrient concentrations from Barbados incubation experiment, from February 2012 (ADIMA project)Nitrate plus nitrite (N+N) were analyzed by Alpkem RFA 300 following methods from Armstrong et al. (1967) (Armstrong, Stearns, & Strickland, 1967). Alpkem RFA300
Inorganic and organic nutrient data from Niskin bottles from R/V Knorr cruise KN210-04 in the Western Atlantic Ocean between Uruguay and Barbados in 2013 (Deep Atlantic DOM project)The analyses for phosphate (PO4), nitrate plus nitrite (NO3_NO2), nitrite (NO2), ammonium (NH4), and silicic acid (silicate) were performed using a hybrid Technicon AutoAnalyzerII and Alpkem RFA300. Alpkem RFA300
Macronutrient analysis and selected hydrographic data from the R/V Falkor ProteOMZ expedition (FK160115) in the Central Pacific in 2016.Used in nutrient analysis Alpkem Autosampler
Total spectral counts of peptides from the R/V Falkor cruise 160115 in the Central Pacific for the ProteOMZ expedition in 2016Used in nutrient analysis Alpkem Autosampler
Total spectral count of proteins from R/V Falkor cruise 160115 for the ProteOMZ expedition in the Central Pacific in 2016Used in nutrient analysis Alpkem Autosampler
Seawater nutrient/metabolite and flow cytometry metadata - Picoplankton incubation experiment 2020Alpkem RFA 300 colorimetric autoanalyzer, Alpkem, Kranj, Slovenia
Geochemical composition of sediment samples collected in the Equatorial Pacific during October and November 2020 on R/V Kilo Moana cruise KM2012Alpkem RFA 300
Geochemical composition of sediment pore water samples collected in the Equatorial Pacific during October and November 2020 on R/V Kilo Moana cruise KM2012Alpkem RFA 300
Seawater microbial communities within coral reef seawater change over six years in response to disturbanceAlpkem RFA 300 Rapid Flow Analyzer
Geochemical composition of water column samples collected in the Equatorial Pacific during October and November 2020 on R/V Kilo Moana cruise KM2012Alpkem RFA 300
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Funded by the U.S. National Science Foundation