A UNIVERSAL PROGRAMMABLE TEMPERATURE SPRAY CHAMBER Jerry Dulude, Glass Expansion,

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Presentation transcript:

A UNIVERSAL PROGRAMMABLE TEMPERATURE SPRAY CHAMBER Jerry Dulude, Glass Expansion,

Glass Expansion 1 Limitations of Room Temperature Spray Chambers Intensity drift with temperature Excessive plasma loading (volatile solvents) Excessive oxide formation Insufficient control of analyte transport

Glass Expansion 1 Limitations of Externally Controlled Spray Chambers Requires antifreeze solution Requires bulky floor model chiller Messy coolant lines from chiller to chamber Freezing of condensate on lines Requires intricate jacketed chamber

Glass Expansion 1 IsoMist™ Controlled Temperature Spray Chamber

Glass Expansion 1 IsoMist Encapsulated Spray Chamber

Glass Expansion 1 Features of IsoMist Powerful Peltier-effect chiller reaches -5C in 15 minutes Programmable from -10 to 60C in 1 degree increments Maintains temperature to within 0.1 degree Custom software runs from any PC Compact design (7.5x4x4 inches) 100% self-contained (no external lines) Incorporates Bluetooth® technology for clean wireless control (USB available)

Glass Expansion 1 PC Screen showing IsoMist Software

Glass Expansion 1 Applications of the IsoMist Analyze volatile solvents Reduce oxide interferences Lower detection limits Increase stability

Glass Expansion 1 Determination of Trace Metals in Naphtha Interfere with the cracking process Poisoning of the catalysts Environmental release concerns Origin and migration markers

Glass Expansion 1 Analysis of Naphtha by ICP-OES PE Optima 2100 DV (Axial view) Forward Power: 1500Watts Coolant flow: 20L/min Auxiliary flow: 1.8L/min Nebulizer gas flow: 0.35L/min Injector: 1mm capillary bore Spray Chamber: Twister baffled cyclonic Nebulizer: SeaSpray glass concentric Uptake rate: 300ul/min IsoMist temperature: -10C

Glass Expansion 1 IsoMist on Optima 2100DV

Glass Expansion 1 Spike Recoveries in Naphtha

Glass Expansion 1 Oxide Reduction in ICP-MS Isobaric oxide interferences Element/IsotopeInterference 56 Fe 40 Ar 16 O + 51 V +35 Cl 16 O + 44 Ca +14 N 14 N 16 O + 48 Ti +32 S 16 O + 52 Cr +34 S 18 O + 64 Zn +32 S 16 O 16 O + 64 Zn +48 Ca 16 O + Robert Thomas, Practical Guide to ICP-MS, Marcel Dekker, NY, 2004.

Glass Expansion 1 Reducing Oxides for ICP-MS Data courtesy of David Jones, ALS Chemex, Brisbane, Australia

Glass Expansion 1 Analysis of Limited Sample Volumes Biological applications Intracellular fluids Neonatal samples Forensic applications Requires micro flow nebulization Low DL’s desirable

Glass Expansion 1 Effect of Temperature on Normalized Intensity ( 20ul/min Uptake) ICP-OES PE Optima 2100DV

Glass Expansion 1 Effect of Temperature on DL 20ul/min Uptake (ICP-OES) PE Optima 2100DV

Glass Expansion 1 Stability Enhancement ICP-OES WithoutIsoMist IsoMist At 21C

Glass Expansion 1 IsoMist Compatibility PE ICP & ICP-MS Varian ICP & ICP-MS Agilent ICP-MS ThermoFisher ICP & ICP-MS Horiba J-Y ICP Teledyne Leeman ICP GBC ICP Spectro ICP Borosilicate glass Quartz Inert PFA Models Spray Chamber Materials