Analytical Atomic Spectroscopy (Schrenk, William G.)

Atomic resolution analytical microscopy

It is possible under favorable circumstances to identify composition, bonding, and electronic structure with atomic resolution in microelectronic device structures. In current device structures, where only a few interface atoms can dominate the performance of a device, this can contribute important understanding relevant to product development. This paper is a brief overview of work in our labo...

Indirect Determination of Ascorbic Acid by Atomic Absorption Spectroscopy

A new and simple method followed by atomic absorption spectrometry has been developedfor indirect determination of ascorbic acid (AA). The proposed method was based on the oxidationof AA to dehydroascorbic acid with Cu2+cation(200mgL-1)in an ammonium thiocyanatesolution atpH2.4. AA reduces Cu2+to Cu+followed by the precipitation of Cu+ with SCN-. Then, the excess ofCu2+in the solution was measu...

William P . Hanage , Brian G . Spratt , Katherine

A central problem in understanding bacterial speciation is how clusters of closely related strains emerge and persist in the face of recombination. We use a neutral Fisher–Wright model in which genotypes, defined by the alleles at 140 house-keeping loci, change in each generation by mutation or recombination, and examine conditions in which an initially uniform population gives rise to resolved...

Analytical terahertz spectroscopy.

Recent progress in analytical terahertz (THz) spectroscopy is reviewed with illustrative examples showing that it is an effective method for detecting and identifying intermolecular interactions in chemical compounds, such as hydrogen bonds. The unique and characteristic properties of THz waves, their significance to both science and industry, and the bases of one of the successful fields of an...

Atomic spectroscopy: a review.