a stand-alone device to speed icp analyses jerry dulude, glass expansion, inc., 4 barlows landing...
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![Page 1: A STAND-ALONE DEVICE TO SPEED ICP ANALYSES Jerry Dulude, Glass Expansion, Inc., 4 Barlows Landing Rd., Pocasset, MA 02559, jdulude@geicp.com](https://reader035.vdocuments.us/reader035/viewer/2022081520/5697c0241a28abf838cd4a58/html5/thumbnails/1.jpg)
A STAND-ALONE DEVICE TO SPEED ICP ANALYSES
Jerry Dulude, Glass Expansion, Inc., 4 Barlows Landing Rd., Pocasset, MA 02559,
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Glass Expansion www.geicp.com
Sample Cycle for Unattended ICP Analysis
2244
66
AS to sample
Smpl fills line
Plasma equil
Integration
AS to rinse Rinse
1133
5577
Smpl empties lineSmpl empties line
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Glass Expansion www.geicp.com
Removing Dead Volume
Nebulizer – EzyFit
Spray chamber – Helix
Internal Standard – Low volume chamber
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Glass Expansion www.geicp.com
Software Approaches to Speeding Analysis Fast pump in rinse mode
longer equilibration Predictive Rinse
QC’s complicated Risk of carryover
Intelligent Rinse Analyzes rinse to determine optimum time Rinse is based on sample results Modest productivity gain
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Glass Expansion www.geicp.com
Niagara™ Rapid Rinse Accessory
Interfaces between ICP & Autosampler
Reduces required rinse time Programmable delay time Less than 8 inches high Includes adj. height stand
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Glass Expansion www.geicp.com
How Niagara Works
Analysis Rinse
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Glass Expansion www.geicp.com
Niagara Interface – no software required
Started with hardware trigger on AS Recently modified to serial interface Serial cable runs from ICP computer through the AS
to the Niagara. Each Niagara is preprogrammed for a specific
ICP/AS combination.
ICP-OES or ICP-MSAutosampler
PC
Niagara
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Glass Expansion www.geicp.com
Niagara Time Saving
Standard System With Niagara
Probe to sample 4 4
Uptake delay 20 20
Stabilization 8 8
Read 40 40
Probe to rinse 4 4
Rinse (washout) 16 10
Rinse (rinse) 14
Total (seconds) 106 86
Total Rinse (seconds) 38 38
= Rinse steps for nebulizer & spray chamber
30 second rinse 10 second rinse
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Glass Expansion www.geicp.com
ICP-MS Carryover Comparison
B Fe Zn Se Mo Cd Sn Sb Tl Bi
5ppm Solution 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00
Blank1 12.30 4.29 1.13 1.00 2.13 0.89 3.96 5.32 1.21 1.27
Blank2 5.64 3.46 0.25 0.54 0.48 0.21 1.22 1.38 0.36 0.36
Blank3 3.22 4.54 0.20 0.34 0.22 0.10 0.76 0.79 0.18 0.20
Blank4 2.68 -1.70 0.13 0.20 0.15 0.08 0.59 0.62 0.14 0.12
Blank5 1.90 2.16 0.21 0.00 0.14 0.07 0.41 0.44 0.11 0.13
Blank6 1.49 0.44 0.19 0.07 0.13 0.09 0.36 0.36 0.11 0.15
B Fe Zn Se Mo Cd Sn Sb Tl Bi
5ppm Solution 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00 5000.00
Blank1 8.97 1.88 1.06 0.71 3.13 0.80 5.14 9.32 1.07 1.06
Blank2 5.43 7.59 0.29 0.53 0.59 0.24 1.59 2.05 0.37 0.37
Blank3 3.16 6.95 0.27 0.31 0.35 0.18 0.97 1.23 0.25 0.27
Blank4 2.21 1.26 0.22 0.12 0.22 0.13 0.71 0.91 0.16 0.17
Blank5 2.26 7.33 0.18 -0.09 0.13 0.07 0.49 0.54 0.11 0.13
Blank6 1.55 4.48 0.12 0.07 0.09 0.05 0.38 0.44 0.08 0.09
Standard method without Niagara
With Niagara
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Glass Expansion www.geicp.com
ICP-MS Carryover Comparison
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
pp
b B
oro
n
Standard
w ith Niagara
Boron
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
pp
b M
o
Standard
w ith Niagara
Moly
0.00
0.20
0.40
0.60
0.80
1.00
1.20
Blank1 Blank2 Blank3 Blank4 Blank5 Blank6
pp
b Z
n
Standard
with Niagara
Zinc
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
Blank1 Blank2 Blank3 Blank4 Blank5 Blank6
pp
b T
l
Standard
with Niagara
Thallium
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Glass Expansion www.geicp.com
On-Line Productivity Calculator
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Glass Expansion www.geicp.com
On-Line Productivity Calculator
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Glass Expansion www.geicp.com
Payback with Niagara
Without Niagara With Niagara
Samples/hour 34 45
Samples/day 272 360
Extra samples per day 0 88
Extra samples less QC’s 0 79
Price per sample $50 $50
Extra revenue per day $0 $3950
Extra revenue per month $0 $79,000
Extra revenue per year $0 $948,000
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Glass Expansion www.geicp.com
Summary
Decrease dead-volume in sample introduction system to reduce rinse time
Software approaches produce marginal productivity improvements
Niagara produces clear gains in productivity leading to marked increases in instrument throughput and per instrument revenue generation.