Transcript IsoMist - Glass Expansion

A Programmable Universal
Temperature Controlled
Spray Chamber for ICPOES and ICP-MS
Jerry Dulude, Ron Stux, and Vesna Dolic, Glass
Expansion, [email protected]
Limitations of Room Temperature
Spray Chambers
 Sensitivity drift with temperature
 Excessive plasma loading (volatile solvents)
 Excessive oxide formation
 Insufficient control of analyte transport
Glass Expansion
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Limitations of Externally Controlled
Spray Chambers
 Requires antifreeze solution
 Requires bulky floor model chiller
 Cumbersome coolant lines from chiller to
chamber
 Freezing of condensate on lines
 Requires intricate jacketed chamber
Glass Expansion
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IsoMist™ Controlled Temperature
Spray Chamber
Glass Expansion
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IsoMist Encapsulated Spray Chamber
Glass Expansion
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Features of IsoMist
 Powerful Peltier-effect chiller reaches -5C in 15
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minutes (chamber interior)
Programmable from -10 to 60C in 1 degree
increments
Maintains temperature to within 0.5 degree
Compact design (7.5x4x4 inches)
100% self-contained (no external lines)
Incorporates Bluetooth® technology for clean
wireless control (USB available)
Compatible with all ICP-OES and ICP-MS models
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PC Screen showing IsoMist Software
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Determination of Trace Metals in
Naphtha
 Interfere with the cracking process
 Poisoning of the catalysts
 Environmental release concerns
 Origin and migration markers
Too volatile for room temperature analysis due to
excessive plasma loading
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Analysis of Naphtha by ICP-OES
PE Optima 2100 DV (Axial view)
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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
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IsoMist on Optima 2100DV
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Analysis of Naphtha by ICP-OES
Sample Preparation
 Blanks & Standards: 100% kerosene
 Samples: 100% Naphtha
 Spikes: Naphtha + S-21 (Conostan)
 Internal Standard: 0.5ppm Co (Conostan)
 IsoMist Temperature: -10C
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Naphtha Reproducibility
Neat Sample
Concentration(ppm)
Reproducibility of naphtha analysis (90 min apart)
1.200
1.100
1.000
0.900
0.800
0.700
0.600
0.500
0.400
0.300
0.200
0.100
0.000
Cd 228.802
Cr 205.560
Cu 324.752
Fe 259.939
Mn 257.610
Ni 341.476
P 214.914
Pb 220.353
1
2
Sn 189.927
Ti 334.940
naphtha(ppm)
V 292.464
analysis
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Spike Recoveries
800%
700%
600%
500%
400%
0.1 spike recovery
300%
200%
100%
0%
0
9
6
2
2
0
4
40
14
53
27
9
80
75
56
61
93
47
9
46
3
9
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4
8
4
5
7
9
1
4
2
0
9
33
25
25
34
22
32
22
18
20
21
29
i
i
r
n
P
T
V
N
C
Fe
Cd
Cu
Pb
Sn
M
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Analysis of Limited Sample Volumes
 Biological applications
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Intracellular fluids
Neonatal samples
 Forensic applications
 Requires micro flow nebulization
 Low DL’s desirable
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Alternative to HEN/Direct injection
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39
4
Cd .40
21 1
4
Cd .44
22 0
Co 6.50
23 2
8
Cr .89
26 2
7
Cr .71
20 6
5
Cu .56
32 0
Cu 7.39
32 3
4
Fe .75
23 2
8
Ni .20
23 4
1
Ni .6 0
22 4
1
Pb .6 4
22 8
0
Se .35
19 3
6.
02
V
29 6
2
Zn .46
20 4
6
Zn .20
21 0
3
Zn .85
20 7
2.
54
8
Al
Relative Sensitivity
Effect of IsoMist Temperature on
Normalized Sensitivity (20ul/min Uptake)
4.00
3.50
3.00
2.50
Glass Expansion
40C
2.00
60C
1.50
21C
1.00
0.50
0.00
PE Optima 2100DV
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Al 6.1
39 53
Be 4.
4
31 01
C 3.1
d
2 07
C 14.4
d
22 40
C 6 .5
r2 0
6 2
C 7 .7
r2 1
6
C 05.
u
56
3
0
C 27.3
u
32 93
F e 4 .7
2 52
M 38.
2
n
25 04
N 7 .6
i 2 10
3
N 1.6
i2 0
2 4
Pb 1.6
22 48
Se 0.3
19 53
V 6.02
29 6
Z n 2 .4
20 64
Z n 6 .2
21 00
Z n 3 .8
20 57
2.
54
8
Al
3
Rel. DL
Effect of IsoMist Temperature on DL
12
10
8
2ml/min 21C
6
Glass Expansion
.02ml/min 21C
.02ml/min 60C
4
2
0
PE Optima 2100DV
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IsoMist Benefits
 Enables the analysis of volatile organics
 Enhances sensitivity for limited volume
samples
 Reduces isobaric oxide interferences
 Increases the chance of passing QC’s
 Provides a record for regulatory compliance

2C = 10% shift in sensitivity
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