210VGP Atomic Absorption
Spectrophotometer
Buck Scientific’s 210VGP Atomic Absorption Spectrophotometer
is the culmination of more than 20 years success and
experience as a manufacturer of spectroscopy instruments.
The 210VGP is a powerful, compact and cost effective
solution to all atomic analyses. It has been designed
to meet the performance and flexibility your laboratory
requires—now and in the future.
Standard Features
The 210VGP is shipped ready for use. All operating
conditions are preloaded in the internal computer,
including lamp settings, secondary wavelengths, and
alternate methods of analysis for over 60 elements
by flame, furnace, or hydride techniques. The three
lamp turret has individual controls for alignment
and staywarm/operating facilities for each lamp. Direct
report generation to a printer or data linking to
the optional AAnalyze software package is easily done
using the parallel and RS232C ports.
Analytical Performance
The Buck 210VGP is a high energy, microprocessor controlled
single beam atomic absorption spectrophotometer. Solid
state electronics and simple optics provide the basis
for our superior stability and sensitivity. The Ebert
mount monochromator and user-selectable bandwidth
give the system maximum flexibility.
Our short-path dynamic nebulizer/burner configuration
is highly efficient. An inert needle, precisely positioned
in a high flow venturi, delivers sample to the corrosion
proof impact bead. This results in a tremendously
high nebulization effect for all types of sample matrices.
On-board Microprocessing
The completely integrated firmware found in the Buck
210VGP gives absolute control of operation and data
manipulation. From setting lamp parameters to optimizing
calibration curves and furnace temperature/time programs;
the internal firmware provides access to all of the
system settings.
Cost Effectiveness
The 210VGP is designed for minimal maintenance. The
burner assembly is easily accessible for quick cleaning.
The microprocessor uses state-of-the-art components
and is machine assembled for quality and reliability.
With the best performance-to-price ratio in the
market, the 210VGP is truly an affordable instrument
that will maximize your return on investment.
Optical System
Buck Scientific's “Stable Beam” System creates an
optimum optical alignment. We have the lowest number
of energy reducing optics (no energy wasting beam
splitters) for the greatest throughput of sample energy.
Background Correction
The Model 210VGP offers two exceptional background
correction systems; a unique, in-line D2 system and
Variable Giant Pulse (VGP) correction.
Deuterium (D2)
Continuum Lamp Correction
A D2 lamp emits radiation from the far-UV
region (<190nm through approximately 350nm). With
our proprietary in-line system, the D2 emission corresponds
precisely with the spectrum of the analyte. Using
modulated signals, the absorbance of analyte and background
interferences are ratioed resulting in a clean, unbiased
absorbance signal.
Variable Giant Pulse (VGP)
Correction
Hollow cathode lamps normally operate at currents
of 3-15 mA. If the applied power is raised to several
hundred mA, they exhibit a phenomenon called self-reversal.
This giant pulse of current changes the nature of
the analyte absorption line so it will only measure
the background absorbance. Like D2 correction, the
background absorbance is subtracted from the total
signal to give the corrected sample reading. The VGP
system removes interferences for elements outside
the normal D2-UV region.
Buck’s unique internal software allows the user
to vary both modes of the background correction to
optimize the analysis for selected elements.
Model 420 Continuous Flow
Hydride
The Model 420 hydride accessory provides virtually
instant access to PPT detect ability for hydride metals
in a semi-automated, continuous flow system. Low level
determinations of As, Se, Sb, Bi, Te, Sn, and Ge are
easily performed. The cold vapor mercury model achieves
trace level analysis.
Model 220AS Furnace Auto sampler
Complete system automation can be achieved using the
Model 220AS Auto sampler. This fully programmable,
random access system provides 40 sample cups and eight
calibration/QC cups. It can also perform automatic
matrix modifier additions and sample dilutions. Sample
cups can be identified in the built-in table, and
method development time can be reduced substantially.
Model 240 Flame Auto sampler
To enhance laboratory productivity, this 150 position
auto sampler features a fast access rate for unattended
operation. Users can program various dilution and
sample volumes with automated spike addition. A high
quality coating resists acids and bases. Full random
access allows for complete flexibility.
AAnalyze™ Data Acquisition
Software
Provides automated data collection via RS232C, conforming
to all EPA protocols. Data handling capabilities include
auto calibration, spike recoveries, drift corrections,
and QC charting. Calibrations are performed using
linear or polynomial regressions in a Windows®-based,
easy to use format. Full report generation with calibration
curves and QC chart printouts as well.
AA
Accessories
Buck Scientific offers high quality hollow cathode
lamps, and aqueous and organic standard solutions.
For furnace operation, we offer matrix modifiers and
buffers, plus three styles of graphite tubes. Buck
has all the accessories and supplies needed for atomic
absorption spectroscopy.
