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Advantages of a Syringe Driven Sample Introduction Accessory for ICP Spectrometry Jerry Dulude and Scott Bridger Glass Expansion
Advantages of a Syringe Driven Sample Introduction Accessory for ICP SpectrometryJerry Dulude and Scott Bridger
Glass Expansion
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Assist Automated Productivity Accessory
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Assist components
Niagara II Plus™ Rapid Rinse accessory Sample syringe plus drive Built in switching valve Built in peristaltic pump Optional internal standard syringe plus drive
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Niagara II Plus
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Niagara II Plus Flow Diagram
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Niagara II Plus Flow Diagram-2
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Screen display of Niagara II Plus software
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ICP-MS Carryover Comparison
0.00
2.00
4.00
6.00
8.00
10.00
12.00
14.00
Blank1
Blank2
Blank3
Blank4
Blank5
Blank6
ppb
Bor
on
Standard
w ith Niagara
Boron
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
ppb
Mo
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
ppb
Zn 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
ppb
Tl Standard
with Niagara
Thallium
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Niagara II Plus Selectable sample loop Optional internal standard lines Positive displacement pump Multi-stage valve Sample does not contact pump tubing
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Standard operation Niagara II PlusCycle time Rinse time Cycle time Rinse time
Probe to sample 5 0 5 5Uptake delay 15 0 5 5Stabilization 10 0 10 0Read 15 0 15 0Probe to rinse 5 0 0 0Rinse 30 30 0 0TOTAL 80 30 35 10
Time Saving for Niagara II Plus
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Additional Assist Features
Precision syringe and drive for sample Optional precision syringe and drive for
internal standard
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Syringe vs. peri pump
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Advantages of Syringe Sample Delivery Computer control of delivery speed Broad selection of sample/IS ratio High precision for scanning systems
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e.g. 20x dilution with peri pump @ 0.5ml/min uptake 0.38mm ID (orange/green) 1.75mm ID (blue/green) Pump speed=2rpm
Very Noisy Signal
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Assist Performance on a Elan9000 ICP-MS
Uptake rate: 0.5ml/minSample: .025ml/minIS: .475ml/minDilution = 20x
* Internal standards
*
*
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Assist Productivity Enhancement
Without Assist With AssistCycle time Rinse time Cycle time Spray chamber
rinseProbe/uptake line rinse
Probe to sample
5 0 5 5 0
Uptake delay 15 0 5 5 0
Stabilization 10 0 4 0 4
Read 15 0 15 0 15
Probe to rinse 5 0 0 0 0
Rinse 30 30 0 0 0
TOTAL 80 30 29 10 19
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Productivity comparison*
Standard operation Niagara II (w/o FIA) Niagara II Plus Assist
19% 27% 43% 52%
* % of cycle devoted to measuring signal
