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 418
A–427 A
MS Detectors.
(772 KB PDF)
In MS, ion generation and separation have received most of the attention. David W. Koppenaal and colleagues at Pacific Northwest National Laboratory, the University of Arizona, Indiana University, and Los Alamos National Laboratory review current MS detector technology and discuss concepts on the horizon that will allow MS to see the forest, the trees, and all the leaves.
View Supporting Information [MS Word] for this feature.
 429 A–432 A
When Microfluidic Devices Go Bad.
(168 KB PDF)
How much of an issue is fouling in microfluidic devices? What causes fouling, how does it affect the performance of the device, and how can it be tackled? Rajendrani Mukhopadhyay asks these questions of a number of investigators and finds that there aren’t any simple answers.
 433 A–438 A
Rock Varnish and the Manganese Oxide Connection.
(332 KB PDF)
The brown or black coatings on some rocks were once thought to be minerals that had “sweated out” in the desert sun. Scientists now believe the coatings are of biogenic origin; this might be relevant to the search for life on other planets. Barry E. DiGregorio discusses the analytical techniques being used to study these coatings.
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