Technical Articles

The genetic information used in the growth and operation of living organisms is contained in DNA, a specific type of nucleic acid molecule. read more

Baseline estimation and correction is critical for many types of spectral data. read more

There are two schools of thought in interpreting the so-called positional fluctuation of peaks of IR spectra under the influence of environmental factors, i.e., temperature and concentration. read more

The new world of very large molecules requires advanced analytics, particularly for structures with a molar mass larger than one million daltons extending up to particles with diameters of 1000 nm. read more

The determination of residual solvents (RS), formerly called organic volatile impurities (OVI), in pharmaceutical products is probably the most important application of gas chromatography in ... read more

In middle age, field flow fractionation (FFF) is having an identity crisis, although no one seems to notice. read more

The previous article (American Laboratory, Oct 2010) left off with two interesting questions: 1) How does an analyst decide whether a positive response for a blank is low enough to be ignored? and 2) ... read more

Over the last decade, monolith technology has progressed from a promising approach conceived by Fréchet, Švec, Huber, and others to a well-developed separation tool. read more

The city of Philadelphia welcomed the American Society for Cell Biology (ASCB) for its 50th Annual Meeting, held from December 11 to 15. The meeting featured the new tagline, The Science of Life, the ... read more

Despite its widespread applications, infrared microspectroscopy has fundamental spatial resolution limits set by both the laws of optics and practical design constraints. read more