Ion–surface collisions in mass spectrometry: Where analytical chemistry meets surface science

Where science meets society.

T he theme for next week's American Association for the Advancement of Science (AAAS) annual meeting, " The Nexus: Where Science Meets Society, " reminds us of many events of the past few years that suggest that the relationship between science and society is undergoing significant stress. Some members of the public are finding certain lines of scientific research and their outcomes disquieting...

Molecular metal catalysts on supports: organometallic chemistry meets surface science.

Recent advances in the synthesis and characterization of small, essentially molecular metal complexes and metal clusters on support surfaces have brought new insights to catalysis and point the way to systematic catalyst design. We summarize recent work unraveling effects of key design variables of site-isolated catalysts: the metal, metal nuclearity, support, and other ligands on the metals, a...

Museum laboratories: where art meets science.

Jitter separation: Where science meets art

In an ideal world, rise and fall times would be infinitely fast and every edge of a digital stream would consistently fall the exact same time away from the last. The end result would be no jitter, no wiggling, and no eyes diagrams that suffer from being closed or close to closed. Unfortunately it is not a perfect world, and what once was conceived as an infinitely fast edge, becomes slower as ...

Analytical mass spectrometry of herbicides.

Herbicides are chemical substances that are applied to agricultural soils, gardens, lawns, or plants to destroy or to prevent the growth of undesirable vegetation. The herbicides included in this review are generally synthetic organic compounds that are ingredients in commercial herbicide products that were designated active during late 2002 in the U.S. Environmental Protection Agency's databas...