Jarrell-Ash - AtomScan 2000
( Thermo Scientific )

Jarrell-Ash’s AtomScan 2000 is a  sequential inductively coupled argon  plasma (ICAP) spectrometer for methods  development and single- or multi-element  analyses. The AtomScan 2000 has a highspeed  drive which can traverse the entire  UV-VIS spectrum in less than s. This  feature is a significant advance over  existing stepper-motor technology. The  AtomScan 2000 scanning monochromator  has a 0.75 m crossed Czerny-  Turner optical design which covers a  wavelength range from 175 to 800 nm. To  assure high wavelength accuracy and  repeatability, the AtomScan 2000 is  microprocessor-calibrated against known  wavelengths at frequent intervals during  use. Additionally, the instrument is temperature-  controlled and air-cushioned  for stability.  To analyse a variety of solution  samples, the AtomScan 2000 uses an  ICAP source powered by a 2500W,  27 MHz RF generator. The analyst uses  the AtomScan data-acquisition system  computer, video monitor and printer--to  operate the instrument. Mini-floppy discs  contain AtomScan software programs;  and menu-driven software leads the  analyst step-by-step through instrument  operation. A high resolution graphics  display format is included for easy interpretation  of spectral scans. 

Dimensions (w x d x h  in cm)
Weight (kg)
Power
Spectrometer	0.75 m Czerny-Turner, purged (optional), temperature controlled (+- 0,05 °C); vibrational isolators (air at 80  psig), entrance and exit slit width: 25 µm
Grating	1200 lines/mm, ruled, 75x95 mm, blazed at 400 nm
Optics	coated quartz lenes, magnification factor 4, horizontally and vertically adjustable over 25 mm
Wavelength range	165-800 nm
Wavelength drive	high-speed galvanometer drive (165-800 nm in 20 ms)
Resolution	18/36 pm respectivelly for the 1st/2nd order
Detector	3 PMT’s (R300,R427, R889)
Detection mode	sequential: slew rate up to 120nm/s; step size 9/18 pm, integration time: 100 µs (minimum)
Read out	3 computer controlledA/D converters, multiplexed to a single 12-bit A/D converter (960 readings per second), 107 dynamic range
ICP generator	crystal-controlled frequency and automated power control
Frequency (MHz)	27.12
Power (Watt)	2500
Load coil	autotuning network
Torch	extended Fassel-type torch
Argon flow  (L/min)	15
Sample introduction	cross-flow nebulizer
Operating system and software	Software written in BASIC including  a graphic display (scans),  report writing a.0.
Computer	Spectrochemical Controller: consisting of two 16  bit microprocessors with up to  64 K RAM and 32 K ROM connected  to data acquisition system  via serial link; Data processing  uses a 6502-based microprocessor  with 48 K RAM, 12 K ROM, dual  mini-floppy disks (133 K  Bytes/disk), green phosphor video  monitor, and line printer.
Short term precision (RSD for 10 replicates)
Long term precision (RSD for 4 hours)
Sensitivity
Detection limits (3s, µg/L)
Accessories
Special features