ICP-AES: Is the End Near?

Apr
12
2018

Analytica Conference > GDCh / Room 5 > New Developments in Analytical Spectroscopy - The Power of Light

12. Apr 2018
10:00-10:45 h  |  ICM - Internationales Congress Center München Room 5

Additional informations in detail view:
o Attachments
o Presscontact
o Alternative Events

Details

Subjects: 

Analytic

|

Applications

Speaker: 

Prof. Dr. Gary M. Hieftje 

(Indiana University Bloomington)

Type:
Lecture
Speech: English

It is now over 50 years since the modern version of the analytical Inductively Coupled
Plasma (ICP) was described and evaluated. In the intervening years, the ICP has
proven to be a workhorse for elemental analysis, as a source for both emission and mass
spectrometry. Its detection limits are superb, precision acceptable, and it is relatively
easy to use. Given this longevity and attractive features, the ICP would seem to have a
permanent position in the elemental-analysis pantheon. However, a closer examination
reveals a number of shortcomings of the ICP, especially as an emission source. For
example, the spectrum it produces is extremely cluttered, with many lines from neutral
atoms and ions, and bands from molecular species that arise from the sample, the gas
lines, and the surrounding atmosphere. In addition, the spectral features to be measured
sit atop an elevated continuum background caused by ion-electron recombination and
overlapping Lorentzian wings from the narrower features. Further, the ICP requires a
high-power radiofrequency power supply and consumes a great deal of high-purity
argon. Samples are ordinarily fed into it by a nebulizer and spray chamber, which exhibit
long washout times and can suffer from sample carryover.

In this presentation, a new plasma source will be evaluated that offers solutions to some
of these shortcomings of the ICP; it was described briefly at an earlier Analytica
conference. Termed the Microwave Inductively Coupled Atmospheric-pressure Plasma
(MICAP), it boasts detection limits equivalent to those of the argon ICP. However, it is
driven by a low-cost microwave-oven magnetron and runs on either nitrogen or air.
Here, a new spectral atlas will be described that will assist an analyst in choosing the
optimal spectral lines to employ with the MICAP. In addition, matrix interferences in the
MICAP will be evaluated. Such interferences arise when an analyte produces a different
signal level in samples than in standards used for calibration, even when the
concentrations are the same.

Another innovation that will be reported is a system for improving the resolving power of
a time-of-flight mass spectrometer that can be coupled to either an ICP or MICAP.

Speaker
Prof. Dr. Gary M. Hieftje Distinguished Professor and Robert & Marjorie Mann Chair in Chemistry, Department of Chemistry, Indiana University Bloomington Show Profile

  • Participants

    Speaker
    Prof. Dr. Gary M. Hieftje Distinguished Professor and Robert & Marjorie Mann Chair in Chemistry, Department of Chemistry, Indiana University Bloomington Show Profile

Location
Outdoor areas
EntranceNorth-East
EntranceNorth-West
EntranceNorth
ConferenceCenter Nord
ICM -InternationalesCongressCenterMünchen
B0
C1
C2
C3
C4
C5
C6
B1
B2
B3
B4
B5
B6
EntranceWest
Atrium
A1
A2
A3
A4
A5
A6
EntranceEast
EntranceNorth-West
EntranceNorth
Outdoor areas
EntranceNorth-East
ConferenceCenter Nord
ICM
B0
C1
C2
C3
C4
C5
C6
B1
B2
B3
B4
B5
B6
EntranceWest
Atrium
EntranceEast
A1
A2
A3
A4
A5
A6
Apr
12
2018

Analytica Conference > GDCh / Room 5 > New Developments in Analytical Spectroscopy - The Power of Light

Stable Isotope Raman Microspectroscopy for Environmental Analysis: Feasibility Studies

12. Apr 2018
11:35-12:00 h  |  ICM - Internationales Congress Center München Room 5
Speaker: Dr. Natalia P. Ivleva (TU München)

Additional informations in detail view:
o Attachments
o Presscontact
o Alternative Events

Details
Apr
12
2018

Analytica Conference > GDCh / Room 5 > New Developments in Analytical Spectroscopy - The Power of Light

Breath Analysis via Mid-Infrared Photonics: Why Small is Useful

12. Apr 2018
11:10-11:35 h  |  ICM - Internationales Congress Center München Room 5
Speaker: Prof. Dr. Boris Mizaikoff (Ulm University)

Additional informations in detail view:
o Attachments
o Presscontact
o Alternative Events

Details
Apr
12
2018

Analytica Conference > GDCh / Room 5 > New Developments in Analytical Spectroscopy - The Power of Light

Verleihung des Bunsen Kirchhoff Preises

12. Apr 2018
10:45-11:00 h  |  ICM - Internationales Congress Center München Room 5

Additional informations in detail view:
o Attachments
o Presscontact
o Alternative Events

Details