NEWS
With only a 10 sec rinse, the standard Niagara system achieved a better washout compared to a 30 sec rinse without the Niagara saving
a considerable amount of time (31%). However, adding the bubbles and the possibility to have dual rinse stations with bubbles reduced
the carryover even further, giving better than 4 orders of magnitude washout with a 46% savings in sample time compared to the standard
instrument setup.
Table 4. Washout Experiments after analyzing 1000 ppm Tl
Sample ID Standard setup
30 sec Rinse
Standard setup
1 sec Rinse
Niagara
10 sec Rinse
Niagara with Bubbles
1 sec Rinse
Blank-1 (2%HNO3) 0.07 ppm Tl 0.48 ppm Tl 0.05 ppm Tl 0.04 ppm Tl
Blank-2 (2%HNO3) 0.02 ppm Tl 0.06 ppm Tl 0.01 ppm Tl 0.01 ppm Tl
Blank-3 (2%HNO3) 0.02 ppm Tl 0.04 ppm Tl 0.01 ppm Tl 0.00 ppm Tl
Sample to Sample Time 71 (sec) 41 (sec) 49 (sec) 38 (sec)
Conclusions
The Niagara CM Rapid Rinse provides a simple, low cost approach to improving ICP productivity. Typical time saved with the Niagara is
approximately 30%, with little to no changes to the current ICP method settings and no degradation in performance. A new Method Wizard
combined with the features of the NRRV2 software facilitate easy optimization and self-installation. A unique new post wash feature with the
option to add a series of bubbles and dual rinse drastically improves washout and reduces rinse time.
References
1. Glass Expansion October 2013 Newsletter, “How to Achieve High Accuracy with Difficult Samples.”
2. Glass Expansion October 2005 Newsletter, “Increasing the Productivity of ICP Analyses.”
3. Glass Expansion February 2013 Newsletter, “Latest Developments in Enhanced Productivity Products.”
www.geicp.com Glass Expansion Newsletter | Issue 40 5
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