· Concentric nebulizer and cyclonic spray chamber (several types available)· Classic vertical torch Dual View (Axial/Radial)
· UV-Vis Detection with high-resolution mode SCD
· Autosampler
· Integrated solid-state RF generator
· Thermostatted sample compartment
· PEEK cyclonic spray chamber and a high-flow
· HF resistant GemCone nebulizer
· 2.0 mm alumina injector
· Chiller not included
The Optima 4300™ DV ICP-OES classic vertical torch Dual View (Axial/Radial) ICP Torch, uV-Vis Detection, Autosampler configuration is ideal for laboratories with moderate to heavy loads of difficult samples. This unit has simultaneous, multi-element capabilities and is used for routine production analyses for many elements at low to intermediate concentration levels. An integrated solid-state RF generator
and Dual-view optical system ensures a wide working range
Thermostatted optical system eliminates peak profiling and searching, providing excellent long-term stability with simultaneous background correction
Polychromator The high energy (f/6.7) echelle-based Optima™ polychromator utilizes two SCD (Segmented-array Charge-coupled Device) detectors. The measured bandpass of the system is 0.006 nm at 200 nm. The 80 by 160 mm echelle grating (manufactured by PerkinElmer) has 79 lines per mm and a blaze angle of 63.4 degrees. With the Optima 4300V, a 60-degree fused-quartz prism is used as the cross disperser for the visible region (403 - 782 nm). The UV disperser on all Optima 4000 series of spectrometers incorporates Schmidt correction into its surface to eliminate aberration for the 400-mm radius camera sphere.
The entire optical system is enclosed in a purged and thermostatted optical
enclosure. The optical enclosure is mounted on the same, large optical bench as
the sample introduction system. The optical bench is shock-mounted to the frame
of the instrument so that normal floor vibrations do not affect system performance.
Plasma Viewing The 4300V comes standard with a classic vertically oriented torch. Viewing of the plasma is accomplished by computer control of a mirror located in the optical path and allows adjustment of the plasma viewing in both the vertical and horizontal planes. The software can optimize the viewing position.
P E C I F I C A T I O N S
Shutter and Hg Recalibration System
The computer-controlled, pneumatically operated shutter automatically opens and
closes for each sample. By closing the shutter between each sample, the first
transfer mirror is protected from long exposures to the intense UV radiation of the
plasma, thus extending the useful lifetime of the mirror. A mercury lamp is built
into the shutter mechanism and can be viewed when the shutter is closed to
monitor the mercury emission line at 253 nm and automatically update the system
wavelength calibration. Frequency of the automatic recalibration is user-selectable
between 0 and 1000 minutes and can be varied during an autosampler analysis.
Detector The patented PerkinElmer Segmented-array Charge-coupled Device SCD detectors (U.S. Patent No. 4,820,048) consist of 235 addressable subarrays, with over 6000 pixels on a 13 by 19 mm silicon substrate. Typical readout noise is about
13 electrons RMS; dark current is less than 100 electrons/pixel/second; and
readout speed is 50 µsec/pixel. Correlated double-sampling data acquisition
electronics further reduce electronic noise.
ICP System Specifications RF Generator The Optima 4300V ICP-OES features a 40-MHz, free-running solid state (no power amplifier tube needed) RF generator, adjustable from 750 to 1500 watts, in 1 watt increments. The power efficiency is greater than 77% with <0.1% variation in output power stability. The solid-state components significantly increase reliability and can result in higher signal/power readings than conventional tube generators. The compact RF supply meets all FCC requirements for RF emissions under Part 18, Section 18.305(b), of the FCC Rules and Regulations.
The instrument complies with the European Union's emissions
(EN 55011 Group 2 Class A) and immunity (EN 61326) requirements.
Plasma ignition is computer-controlled and totally automated. A unique software feature allows the plasma to be ignited automatically at a user-selected time of day, warming the system up prior to an analysis. The plasma can be turned off automatically after an analysis. True power control maintains the plasma power at the set point, even when changing sample matrices.
Safety Interlocks For user safety and system protection, the system constantly monitors water flow, cooling gas pressure, argon pressures, sample compartment door closure and plasma stability, and displays the interlock status on the computer screen as graphic symbols. If an interlock is interrupted, the plasma will
automatically shut down safely.
Cooling Water A water recirculating cooling system is required, with approximately 4 L/min flow capacity at 310 to 550 kPa and a temperature between 15 °C and 25 °C. A Polyscience 6105PE or equivalent is recommended.
Gas Flow Controls
Argon Flow Computer-controlled solenoid valves are used to regulate the flow automatically within the range of 0-20 L/min in 1-L/min increments for plasma argon and 0 to 2.0 L/min in 0.1-L/min increments for auxiliary argon. A mass flow controller is supplied with all systems for the nebulizer argon flow and is variable between 0 and 2.0 L/min in 0.01-L/min increments.
Sample Introduction System Torch A unique demountable torch design using one-piece quartz tubing for plasma and auxiliary gas flow is supplied. The 2.0 mm alumina injector is recommended and supplied with this version. A variety of other injectors are available.
Torch Mount The Optima 4300V ICP-OES system features a unique internally mounted spray chamber. The mount can be adjusted for maximum performance in different matrices. No tools are required for torch or sample introduction removal.
Spray Chamber The HF-resistant, cyclonic spray chamber is recommended and supplied for geochemical and high solids content metals solution analysis.
Nebulizer The Optima 4300V is supplied with the non-clogging, HF-resistant GemCone nebulizer recommended for high salt content samples. An optional concentric nebulizer is also available. The GemCone design is manufactured from corrosion-resistant materials (sapphire/ruby tip in a PEEK body). The system can routinely handle 50% (v/v) solutions of HCl, HNO3, H2SO4, H3PO4, 20% (v/v) HF and 30% (w/v) NaOH. The system is fully compatible with other sample introduction systems such as ultrasonic nebulizers, and solid sampling devices.
Peristaltic Pump A three-channel, computer-controlled pump with speed variable from 0.2 to 5 mL/minute in 0.1-mL/min increments using 0.76 mm (0.030”) i.d. tubing. Software features, including FastPump and SmartRinse™, dramatically improve the sample rinse out and analysis time.
System Specifications Power 200-240 V, 20A line, single phase, 50/60 Hz
Dimensions 150 x 76 x 89 cm (W x H x D) 190 kg (425 lbs)
Environmental The instrument will operate with a laboratory temperature between 15 and 35 °C (59-95 °F). For optimum instrument performance, the room temperature should be controlled at 20±2 °C.
Other Spray Chamber Options:
http://www.spray-chamber.com/selection_1.html
Glass and Quartz cyclonic spray chambers are available in versions that are suited to all types of ICP instruments and for high and low uptakes :
the Althea - standard cyclonic chamber, high throughput at high uptakes
the Libra - baffled cyclonic spray chamber for low solvent loads
the Electron - baffled mini-cyclonic spray chamber for low uptake and fast throughput
the Positron - baffled mini-cyclonic spray chamber for low uptake and minimum solvent load
Other Spray Chamber Options:
http://www.nb-nebulizer.com/selection.html
No-Break Nebulizers are available
the Capital - for high uptakes ( 600 ul/min. up to more than 2 ml/min. )
the Boreal - for medium uptakes ( 50 to 800 ul/min. ),
the Zefyr - for low uptakes ( 5 to 200 ul/min. ), and
the Lucida - for extremely low uptakes ( less than 1 to over 10 ul/min. )
- details of the Lucida can be seen on its own page.