Dionex ICS-3000, Руководство оператора

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1 • Introduction
Doc. 065031-04 1/08
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AS40 Automated Sampler (AS40)
The AS40 is a low-cost, metal-free, sample loading device designed for
ion chromatography applications. The AS40 is capable of delivering
between 0.2 and 5.0 mL of sample in set increments. The AS40 holds
between 66 and 88 vials, depending upon the vial size in use: 0.5 mL,
5.0 mL, or a combination of both sizes. Up to three injections can be
taken from each vial.
The AS40 holds up to 11 cassettes of six 5-mL vials or eight 0.5-mL vials.
Each sample is filtered during loading through a 20-µm filter in the vial
cap, so there is no need to prefilter samples. Samples can be loaded
against backpressures up to 690 kPa (100 psi) without an external
sampling pump, thus facilitating preconcentration work.
ICS-Series Photodiode Array Detector (PDA)
The PDA optical detector is capable of measuring the absorbance
spectrum from 190 to 800 nm. A deuterium lamp optimizes the UV range
(190 to 380 nm) and a tungsten lamp optimizes the visible range (380 to
800 nm).
The PDA enables you to collect up to five single wavelengths (2D
chromatograms) without being required to collect 3D data. Collecting
individual wavelengths instead of the spectra offers two advantages: it
eliminates the need to perform extractions for analyses that do not require
spectral data and it conserves disk space.
ICS-Series Variable Wavelength Detector (VWD)
The VWD is a dual-beam, variable wavelength photometer with one
measurement and one internal reference beam. Spectral capability from
190 to 900 nm is provided by two light sources: a deuterium lamp for
ultraviolet detection and a tungsten lamp for visible wavelength
operation. The four-channel detector measures at up to four wavelengths
simultaneously. The VWD contains a built-in holmium oxide filter for
wavelength verification. To suppress higher-order radiation, two optical
filters can be inserted (automatically) into the light path.