Cold Vapor Atomic Absorption (CVAAS)
The NIC RA-7000A Cold Vapor Mercury Analyzer is the latest technological advancement from Nippon Instruments Corporation (NIC). The RA-7000A performs cold vapor atomic absorption for CVAAS mercury analysis according to traditional EPA and other regulatory methods in waters, wastewaters, soils, sediments, sludges & other biological and environmental compounds. The EPA-compliant RA-7000A is unique in that it measures aqueous, acidified samples using automated discrete direct purge (DDP) technology as opposed to continuous flow, resulting in a waste reduction of over 80%. It does this without the need for any compressed gases and includes a built-in enclosure to protect the integrity of your samples. With the ability to begin with 4 single-sample options and expand when needed to include automated analysis and even fully automated digestion & analysis, the RA-7000A Mercury Analyzers are a fit for every laboratory that requires cold vapor atomic absorption spectroscopy of mercury.
RA-7000A Mercury Analyzer Key Features:
- Discrete, direct purge (DDP) of mercury from each sample…simplifying operation while eliminating carryover and reducing waste
- No compressed gases required thanks to a built-in carrier gas pump, which reduces operational costs
- Detection down to low ppt without the use of gold amalgamation or CVAFS
- Modular design allows for single-sample system with upgrade path to 80, 160 or 240 sample capacity autosamplers
- Multiple configurations for any combination of mercury cold vapor atomic absorption analysis only, 5-mL auto digestion, and 20-mL auto digestion with one detector
- Automatic quenching of potassium permanganate (or other oxidants)…removing this step from the user’s requirements reduces time/cost by improving efficiency in the lab
- Ability to use multiple sample tube types
- Sample: waters, wastewaters, liquid & solid digestates, & more
- Detection method: Cold-vapor atomic absorption spectrometry
- Measuring range: 0.0005 to 400 ppb
- Number of samples: single (manual) / optional 80, 160 & 240 positions by autosampler
- Measuring method: Reducing vaporization
