NEWS Glass Expansion Newsletter | June 2011 | Issue 25
GE NEWS
APPLICATION SPOTLIGHT
ENHANCED PRODUCTIVITY FOR THE ANALYSIS
OF ORE SAMPLES
New 2011 Catalogue
The new 2011 Glass Expansion catalogue
is now available and finding the most
suitable sample introduction system has
never been easier. A new section lists the
most frequently used applications and
shows the recommended components for
each application. A full list of the available
products for each of the most prevalent
ICP-OES and ICP-MS models is also
included. Please send your mailing address
to enquiries@geicp.com and we will
send you a catalogue immediately.
JAIMA EXPO 2011 / SIS 2011
A full range of Glass Expansion products
will be on display at the JAIMA/SIS Show,
Tokyo, Japan, September 7 to 9, 2011
and Glass Expansion specialists will be
on hand to assist you.
IN THIS ISSUE:
• Application Spotlight 1 – 3
• GE News 1
• New Products 4
• Instrument News 5
- From PerkinElmer
- From Spectro
- From Thermo Fisher
Introduction
The Niagara Plus sample introduction accessory has greatly enhanced the performance
of ICP-OES and ICP-MS instruments. The accessory uses Flow Injection technology to
reduce analysis time by 50%, typically, resulting in reduced environmental impact and lower
operating cost. In addition to the cost and environmental benefits, the Niagara Plus delivers
an improvement in analytical performance. Currently, instruments use a read/uptake delay,
stabilization delay (incorporated in the read delay), read/analysis time, and rinse delay.
With the Niagara Plus only a read/uptake delay and read/analysis time are required.
The rinse cycle of the nebulizer occurs during the read/uptake delay (Figure 1) and the rinse
cycle of the autosampler probe and uptake tubing is performed during the read/analysis
time (Figure 2), thus eliminating the rinse delay. The constant flow of solution to the plasma
and uniform internal diameter throughout the entire system allow the stabilization time to be
reduced significantly and it is incorporated into the read/uptake delay to simplify the setup
process. The purpose-built 3 stacked 4 way diagonal valve with internal mixing T-piece
gives a sample swept volume of only 0.4μL before mixing occurs with the diluent or internal
standard. This allows for automatic addition of the internal standard or diluent (Figure 2)
simplifying the sample preparation for ICP-OES and ICP-MS.
Fill sample loop, rinse nebulizer and
spray chamber
nebulizer
internal mixing
Niagara valve
waste piston pump
peristaltic
pump
internal rinse
standard
autosampler
rinse sample
Figure 1: Niagara Plus flow diagram showing the positive displacement pump rapidly filling the sample loop.
This report highlights the performance of the Niagara Plus at the Marine and Freshwater
Research Laboratory (MAFRL) at Murdoch University. We will also introduce a new improved
7-port valve for the Niagara Plus. The MAFRL is an accredited testing laboratory of the
Australian National Association of Testing Authorities (NATA). Their facility is staffed with
experts studying marine systems, estuaries, wetlands, and rivers. Seawater is their typical
sample matrix, but as a commercial and university laboratory they also receive various
samples and student research projects. The results will focus on the benefits that the Niagara
Plus has provided MAFRL since its installation in December 2009. The data discussed
in detail below is from a project examining ore samples for mineral processing.
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