Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
SPECIAL ANNOUNCEMENT
2016 Photonics Buyers' Guide Clearance! – Use Coupon Code FC16 to save 60%!
share
Email Facebook Twitter Google+ LinkedIn Comments

Freon Improves Laser-Ablation Spectrometry

Photonics Spectra
Apr 2003
To reduce the incidence of elemental fractionation and improve the accuracy of laser ablation induction-coupled plasma mass spectrometry for the isotopic analysis of geological samples, Takafumi Hirata of Tokyo Institute of Technology suggests the addition of a refrigerant. In the Jan. 15 issue of Analytical Chemistry, the researcher reported that the delivery of Freon gas to laser ablation sites improves the precision of measurements of the 206Pb/238U ratio in ancient rocks.

Typically, the laser systems increase the Pb/U ratio by 20 to 50 percent as measurement progresses. Hirata found that exposing the ablation sites to 60 µl/min of Freon gas during the process offered a precision of 2 to 4 percent for the 1 billion-year-old and 2.4 billion-year-old zircon standards used in the experiment.


Comments
Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2016 Photonics Media
x Subscribe to Photonics Spectra magazine - FREE!