A STANDALONE DEVICE TO SPEED ICP ANALYSES

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A STAND-ALONE DEVICE TO SPEED ICP ANALYSES

• Jerry Dulude, Glass Expansion, Inc., 4 Barlows
  Landing Rd., Pocasset, MA 02559,
  jdulude_at_geicp.com

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Sample Cycle for Unattended ICP Analysis
6
4
2
3
Removing Dead Volume

• Nebulizer EzyFit
• Spray chamber Helix
• Internal Standard Low volume chamber

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Software Approaches to Speeding Analysis

• Fast pump in rinse mode
• longer equilibration
• Predictive Rinse
• QCs 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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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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How Niagara Works
Rinse
Analysis
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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.

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Niagara Time Saving
30 second rinse
10 second rinse
Rinse steps for nebulizer spray chamber
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ICP-MS Carryover Comparison
Standard method without Niagara
With Niagara
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ICP-MS Carryover Comparison
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On-Line Productivity Calculator
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On-Line Productivity Calculator
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Payback with Niagara
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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.