Instrument: Cold Vapor Atomic Fluorescence Spectrophotometer

Acronym: CVAFS
External Identifier:

Description

A Cold Vapor Atomic Fluorescent Spectrophotometer (CVAFS) is an instrument used for quantitative determination of volatile heavy metals, such as mercury. CVAFS make use of the characteristic of mercury that allows vapor measurement at room temperature. Mercury atoms in an inert carrier gas are excited by a collimated UV light source at a particular wavelength. As the atoms return to their non-excited state they re-radiate their absorbed energy at the same wavelength. The fluorescence may be detected using a photomultiplier tube or UV photodiode.


Dataset NamePI-Supplied DescriptionPI-Supplied Name
Coastal phytoplankton and mercury dynamics in watersheds along the U.S. East Coast from New Jersey to Maine assessed using particulate and dissolved samples collected in 2015 and 2016 Tekran 2600 cold vapor atomic fluorescence spectrometry used to measure HgT Tekran 2600 cold vapor atomic fluorescence spectrometer
Mercury and methylmercury concentrations in aerosols from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015Tekran 2537B mercury analyzer
Atmospheric total gaseous mercury from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015Tekran 2537B, Tekran 2600, Tekran 2700
Concentrations of dissolved and particulate mercury species collected on the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015Cold Vapor Atomic Fuorescent Spectrometer (CVAFS) quantitatively measures volatile heavy metals, such as mercury. Gaseous mercury atoms are carried to the detector via inert gas, excited by a UV light source, and radiate the absorbed energy. The fluorescence is detected by either a photomultiplier tube or UV photodiode. Tekran Model 2500 or 2600 CVAFS Mercury Detector
Measurements of total dissolved gaseous mercury in surface waters from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015Tekran 2537B mercury analyzer
Mercury and methylmercury concentrations in ice cores from the US GEOTRACES Arctic cruise (HLY1502, GN01) from August to October 2015Tekran 2537B mercury analyzer
Mercury and methylmercury concentrations in melt pond water from samples collected during the GEOTRACES Arctic Ocean cruise in 2015 (HLY1502, GN01).Tekran 2537B mercury analyzer
Mercury and methylmercury concentrations in surface snow samples from USCGC Healy HLY1502 in the Canada and Makarov Basins of the Arctic Ocean; Dutch Harbor to Dutch Harbor from August to October 2015Tekran 2537B mercury analyzer
Mercury and methylmercury in wet deposition samples from USCGC Healy HLY1502 in the Canada and Makarov Basins of the Arctic Ocean; Dutch Harbor to Dutch Harbor from August to October 2015Tekran 2537B mercury analyzer
Suspended particulate total mercury and monomethylmercury across the US GEOTRACES East Pacific Zonal Transect, from cruise TN303, 2013
Mercury speciation across the US GEOTRACES East Pacific Zonal Transect, from cruise TN303, 2013
Concentration of atmospheric aerosol total mercury (Hg) from R/V Knorr cruises KN199-04 and KN204-01 (GA03) in the Subtropical northern Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)A Tekran Model 2500 CVAFS Mercury Detector was used. See the manufacturer's product fact sheet (PDF; opens in new window/tab). Cold Vapor Atomic Fluorescence Spectrophotometer
Particulate total mercury and monomethylmercury - US GEOTRACES NATZ from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)Tekran Model 2500 CVAFS Mercury Detector Cold Vapor Atomic Fluorescence Spectrophotometer
Mercury speciation across the US GEOTRACES North Atlantic Zonal Section from R/V Knorr KN199-04, KN204-01 in the subtropical North Atlantic Ocean from 2010-2011 (U.S. GEOTRACES NAT project)Cold Vapor Atomic Fluorescence Spectrophotometer
Mercury stable isotope values for marine particles from R/V Kilo Moana cruises KM1418, KM1407 and KM1506 around station ALOHA in 2014 and 2015cold vapor atomic fluorescence spectrophotometry
Mercury stable isotope values for precipitation collected around Station ALOHA from 2005 to 2014cold vapor - atomic fluorescence spectrophotometry
[DEPRECATED] Dissolved mercury measurements from the Western Arctic Ocean, which were sampled as part of the 2015 US GEOTRACES Cruise (GN01; HLY1502)Cold Vapor Atomic Fuorescent Spectrometer (CVAFS) quantitatively measures volatile heavy metals, such as mercury. Gaseous mercury atoms are carried to the detector via inert gas, excited by a UV light source, and radiate the absorbed energy. The fluorescence is detected by either a photomultiplier tube or UV photodiode. Tekran Model 2500 CVAFS Mercury Detector
[DEPRECATED] Particulate total mercury and particulate monomethylmercury concentrations from the Western Arctic Ocean, which were sampled by McLane pumps during he 2015 US GEOTRACES Cruise (GN01; HLY1502)Cold Vapor Atomic Fuorescent Spectrometer (CVAFS) quantitatively measures volatile heavy metals, such as mercury. Gaseous mercury atoms are carried to the detector via inert gas, excited by a UV light source, and radiate the absorbed energy. The fluorescence is detected by either a photomultiplier tube or UV photodiode. Cold Vapor Atomic Fluorescent Spectrometer (CVAFS)