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A novel hydrazone-based CN- fluorescent probe, HNT, is described here, and a study was done to see if it could show selective recognition of CN- ions.

A Highly Selective Colorimetric and “Turn-Off” Fluorimetric Probe Based on Unsymmetrical Naphthalene Formaldehyde Derivatives for the Detection of CN− in Aqueous Media

Analysts using fluorescence emission and fluorescence excitation spectroscopy may encounter several common problems in their measurements. This tutorial, the first of a three-part series, provides a procedure to help avoid them.

Challenges of Spectrofluorometry, Part 1: Collect Data Right the First Time

Here, a series of developing methods is presented for locating and analyzing deeply buried late Pleistocene archaeological sites, which includes the initial investigation of the geomorphology of a potential archaeological site with a suite of analytical geochemical techniques.

Archaeological, Geochemical, and Remote Sensing Applications in the Search for Pleistocene Landscapes of New England

Phosphogypsum can be used as an intermediary material to produce cement clinker. To monitor the quality of phosphogypsum cement, a novel molecular layer deposition X-ray fluorescence (XRF) analysis method using a glass frit was developed.

An X-ray Fluorescence (XRF) Analysis of a Molecular Layer Deposition (MLD) Method Used in Producing Cement from Phosphogypsum

The “selective fluorescence quenching effects” of Fe3+ ions on carbon dots are examined to gain a more comprehensive understanding of the interactions of metal ions with a variety of fluorescent materials.

Fluorescence Quenching Effects of Fe3+ Ions on Carbon Dots

, is the General Manager of the Applied Systems business at Ocean Insight, an affiliate associate professor at the University of Washington, and has started and advised numerous companies in spectroscopy and in applications of machine learning. He has approximately 40 peer-reviewed publications and 6 patents. His work in practical optical spectroscopy, such as LIBS, Raman, and TDL spectroscopy, dovetails with the coverage in this column, which reviews methods (new and old) in laser-based spectroscopy and optical sensing.

Tunable narrowband light sources are essential for measuring fluorescence, reaction energetics, and other challenging measurements in chemical, biological, and physical systems. In particular, the optical parametric oscillator (OPO) is an indispensable tool.

Narrowband Visible Light: The OPO Reigns

Chemistry can help us understand the past.