A UNIVERSAL PROGRAMMABLE TEMPERATURE SPRAY CHAMBER Jerry Dulude, Glass Expansion, [email protected].

A UNIVERSAL PROGRAMMABLE TEMPERATURE SPRAY CHAMBER

Jerry Dulude, Glass Expansion, [email protected]

Glass Expansion www.geicp.com 1

Limitations of Room Temperature Spray Chambers

Intensity drift with temperature Excessive plasma loading (volatile solvents) Excessive oxide formation Insufficient control of analyte transport


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


IsoMist™ Controlled Temperature Spray Chamber


IsoMist Encapsulated Spray Chamber


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)


PC Screen showing IsoMist Software


Applications of the IsoMist

Analyze volatile solvents Reduce oxide interferences Lower detection limits Increase stability


Determination of Trace Metals in Naphtha

Interfere with the cracking process Poisoning of the catalysts Environmental release concerns Origin and migration markers


Analysis of Naphtha by ICP-OESPE 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


IsoMist on Optima 2100DV


Spike Recoveries in Naphtha

0%

20%

40%

60%

80%

100%

120%

140%

160%

Cd228.802

Cr205.560

Cu324.752

Fe259.939

Mn257.610

Sn189.927

Ti334.940

V292.464

0.1 spike recovery


Oxide Reduction in ICP-MSIsobaric oxide interferences

Element/Isotope Interference56Fe 40Ar16O+

51V+ 35Cl16O+

44Ca+ 14N14N16O+

48Ti+ 32S16O+

52Cr+ 34S18O+

64Zn+ 32S16O16O+

64Zn+ 48Ca16O+

Robert Thomas, Practical Guide to ICP-MS, Marcel Dekker, NY, 2004.


Reducing Oxides for ICP-MS

Data courtesy of David Jones, ALS Chemex, Brisbane, Australia


Analysis of Limited Sample Volumes

Biological applications Intracellular fluids Neonatal samples

Forensic applications Requires micro flow nebulization Low DL’s desirable


Effect of Temperature on Normalized Intensity (20ul/min Uptake) ICP-OES

PE Optima 2100DV

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

Al 394.

401

Cd 214

.440

Cd 226

.502

Co 238

.892

Cr 267

.716

Cr 205

.560

Cu 327

.393

Cu 324

.752

Fe 23

8.204

Ni 231

.604

Ni 221

.648

Pb 22

0.35

3

Se 19

6.02

6

V 292

.464

Zn 20

6.200

Zn 21

3.857

Zn 20

2.548

Rel

ativ

e S

ensi

tivi

ty

40C

60C

21C


Effect of Temperature on DL20ul/min Uptake (ICP-OES)

PE Optima 2100DV

0

2

4

6

8

10

12

Al 396

.153

Al 394

.401

Be 31

3.107

Cd 21

4.44

0

Cd 22

6.50

2

Cr 267

.716

Cr 205

.560

Cu 32

7.39

3

Cu 32

4.75

2

Fe 238

.204

Mn 2

57.6

10

Ni 231

.604

Ni 221

.648

Pb 22

0.353

Se 19

6.026

V 292

.464

Zn 206

.200

Zn 213

.857

Zn 202

.548

Re

l. D

L 2ml/min 21C

.02ml/min 21C

.02ml/min 60C


Stability EnhancementICP-OES

ISOMISTLong term stability for STD2 at 21 deg for over 3 hours

2 mL/min sample uptake

0.95

0.97

0.99

1.01

1.03

1.05

11 30 70 123 190

Time(min)

No

rm

alis

ed

em

iss

ion

co

un

ts

Al 396.153Al 394.401Be 313.107Cd 214.440Cd 226.502Co 238.892Cr 267.716Cr 205.560Cu 327.393Cu 324.752Fe 238.204Mn 257.610Ni 231.604Ni 221.648Pb 220.353Se 196.026V 292.464Zn 206.200Zn 213.857Zn 202.548

O30SS2111777 sample uptake 2.0mL/min

0.95

0.97

0.99

1.01

1.03

1.05

8 74 164 198 233 262 277

Time (min)

Al 396.153As 188.979Ba 233.527Ca 317.933Cr 267.716Cu 327.393K 766.490Mg 280.271Mn 257.610Mo 202.031Na 589.592Ni 231.604P 213.617S 181.975Si 251.611Zn 206.200

Without Without IsoMistIsoMist

IsoMistIsoMistAt 21CAt 21C


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

A UNIVERSAL PROGRAMMABLE TEMPERATURE SPRAY CHAMBER Jerry Dulude, Glass Expansion, [email protected].

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