Advantages of a Syringe Driven Sample Introduction Accessory for ICP Spectrometry

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Advantages of a Syringe Driven Sample
Introduction Accessory for ICP Spectrometry

• Jerry 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
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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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Time Saving for Niagara II Plus
Standard operation Standard operation Niagara II Plus Niagara II Plus
Cycle time Rinse time Cycle time Rinse time
Probe to sample 5 0 5 5
Uptake delay 15 0 5 5
Stabilization 10 0 10 0
Read 15 0 15 0
Probe to rinse 5 0 0 0
Rinse 30 30 0 0
TOTAL 80 30 35 10
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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 _at_ 0.5ml/min
uptake

• 0.38mm ID (orange/green)
• 1.75mm ID (blue/green)
• Pump speed2rpm
• Very Noisy Signal

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Assist Performance on a Elan9000 ICP-MS


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Assist Productivity Enhancement
Without Assist Without Assist With Assist With Assist With Assist
Cycle time Rinse time Cycle time Spray chamber rinse Probe/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