Topic

Articles

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

An Ultrasensitive Fluorescence Method for Mercury Ion Detection Based on Mercury Nanoladder Signal Amplification and Thiazole Orange 

A Full Spectroscopic Study of Pr:YLF Crystals Used in Lasers

An Indole-Based Chemosensor for the Detection of Fluoride Ion and Use In Bioimaging

A Furfural Derivative–Indolium Conjugated Colorimetric and Fluorescent Probe for Cyanide Detection 

Catalytic Kinetic Fluorimetric Detection of Trace Amounts of Bismuth 

Glutathione (GSH) is an intracellular thiol that plays a major role in biological systems. Therefore, the development of effective probes that can detect GSH elicits significant attention. 

A Novel Fluorescence Sensor Based on the Tetrakis (4-Carboxyphenyl) Porphyrin (TCPP)-Hg2+ System for Glutathione (GSH) Detection

Forensic traces are physical remnants of past events that provide critical information for criminal and civil investigations and adjudications. The scientific examination of traces is an incredibly valuable tool for forensic investigations, because the skilled interpretation of traces yields factual answers to a range of pertinent questions.

Combining Spectroscopy with Microscopy for Advancing the Analysis of Forensically Relevant Traces

A novel method was developed for detecting Hg2+ in tobacco, with potential application to mercury detection in environmental water samples.

A Label- and Enzyme-Free Fluorescent Method for the Rapid and Simple Detection of Hg2+ in Cigarettes Using G-Triplexes as the Signal Reporter

Howard Mark serves on the Editorial Advisory Board of 

 and runs a consulting service, Mark Electronics that provides assistance, training, and consultation in near-IR spectroscopy as well as custom hardware and software design and development.

Our annual review of products introduced at Pittcon or during the previous year

Review of New Spectroscopic Instrumentation 2019

Total reflection x-ray fluorescence (TXRF) spectrometry is an energy-dispersive x-ray technique that is used for elemental and chemical analysis, and is especially suitable for small-sample analyses. Ursula Fittschen, an assistant professor at Washington State University, is working on elemental microscopy and micro analysis. She has been using TXRF to analyze stainless steel metal release, and also airborne silver nanoparticles (NPs) from fabrics. Here, she describes the advantages and challenges of this technique.

Total Reflection X-Ray Fluorescence Spectrometry for Metals and Nanoparticle Analysis

Application of simultaneous absorbance and fluorescence excitation-emission matrix (EEM) analysis to identify and classify freshwater planktonic algal species. Main foci were two major potentially toxic cyanobacterial species associated with algal bloom events in the Great Lakes.

Harmful Algal Bloom Species and Identification Strategies

LabSpec 6 MultiWell module and HORIBA Raman systems enable non-destructive analysis with high throughput screening using arrayed sampling devices, automated sample movement, autofocus devices, and automated data acquisition to acquire spectra from hundreds of samples sequentially.

High Throughput Chemical Screening with the LabSpec 6 MultiWell Module

Time‐resolved Fluorescence can analyze potential health benefits from antioxidant activity of curcumin, found in turmeric. Curcuminoids, weakly fluorescent in aqueous solution, show quantum yield increases upon interaction with a protein, such as human serum albumin.

Dye-Protein Binding Monitored in a Microliter Volume Using Time-Resolved Fluorescence

Here, Li2CaSiO4:Sm3+ reddish orange phosphors were synthesized by a solid-state reaction method and examined by spectroscopic methods.

X-ray Diffraction and Fluorescence Spectroscopy Analysis of Sm3+ in Lithium Calcium Silicate

Podcasts

An interview with Justin Cooper, winner of a 2011 FACSS Innovation Award. Part of a new podcast series presented in collaboration with the Federation of Analytical Chemistry and Spectroscopy Societies (FACSS), in connection with SciX 2012 ? the Great Scientific Exchange, the North American conference (39th Annual) of FACSS.

Tracking Molecular Transport in Chromatographic Particles with Single-Molecule Fluorescence Imaging

The basic techniques of fluorescence correlation spectroscopy (FCS) are discussed as well as several applications, such as nanoparticle dispersion studies.

Tracking Unknown Intracellular Activity with Fluorescence Correlation Spectroscopy

The advantages and disadvantages of measuring mercury with cold vapor atomic absorption spectroscopy, cold vapor atomic fluorescence spectroscopy, and direct analysis by thermal decomposition are explained.

Measurement Techniques for Mercury: Which Approach Is Right for You?

From the field to the synchrotron, XRF is expanding its power and scope.

The Dynamic World of X-ray Fluorescence

The onset of nanotechnology and targeted therapy methods for a number of pathologies has made it increasingly more difficult to image effectively in the medical field. With that being said, the inception of quantum dots and the improvements to optical filters has made this once daunting task a common practice.