Category: Analytical

Drawing a map with chemicals!

Buildings and natural preserves create geographical maps. And now, molecules could build a molecular map! By investigating the presence of molecules in the environment, researchers have built some 3D molecular maps, which are the story tellers of our interactions with our living places!

How to unmask the disguised cooking oil from natural oil?!

In recent years, some traders were found to have recycled cooked oil and added to lard in order to reduce production costs. This oil mixture undoubtedly raised food hygiene and safety issues in the food industry. The big question is, how can we distinguish the disguised animal oil from their natural counterparts?

Simple Measurement of Alcohol Content with an Infrared Camera

Title: One-Shot, reagent-free determination of the alcoholic content of distilled beverages by thermal infrared enthalpimetry Authors: Juliano Barin et. al. Publication Info: https://doi.org/10.1016/j.talanta.2017.05.011 During the manufacture of chemical products, the ability to rapidly and accurately monitoring the concentrations of various components is critical.  For the alcoholic beverage industry,…

Health Assessment in Your Home via Disposable Breath Analysis Sensors

Title: Diagnosis and Classification of 17 Diseases from 1404 Subjects via Pattern Analysis of Exhaled Molecules Authors: Hossam Haick et al. Publication Info: ACS Nano, 2017, 11 (1), pp 112–125 DOI: 10.1021/acsnano.6b04930 This work reports on the development of a portable, inexpensive, and non-invasive breath analyzer that couples the use…

Quantifying the Effects of Individual Nanoparticles

Title: Electrocatalytic Activity of Individual Pt Nanoparticles Studied by Nanoscale Scanning Electrochemical Microscopy Authors: Jiyeon Kim, Christophe Renault, Nikoloz Nioradze, Netzahualcóyotl Arroyo-Currás, Kevin C. Leonard, and Allen J. Bard* Publication Info: J. Am. Chem. Soc., 2016, 138 (27), pp 8560–8568 DOI: 10.1021/jacs.6b03980 The mere mention of…

A Simple Organometallic Fluoride Sensor

Title:  Stibonium Ions for the Fluorescence Turn-On Sensing of F– in Drinking Water at Parts per Million Concentrations DOI: 10.1021/ja308194w Author:  Iou-Sheng Ke a, Mykhaylo Myahkostupov b, Felix N. Castellano *b, and François P. Gabbaï *a Journal:  Journal of American Chemical Society Affiliation:  a) Department of Chemistry, Texas A&M University, College…

Online Resources for Doing Organic Chemistry

Yes!!! 100% conversion to product, zero impurities, and a workup so easy I finished it while writing this sentence!Well, that’s what writing it down on an o-chem problem set might make it seem like at least. Turns out doing organic chemistry in practice isn’t so straightforward,…

The ChemCam Instrument Suite on the Mars Science Laboratory Rover Curiosity: Remote Sensing by Laser-Induced Plasmas

Title: The ChemCam Instrument Suite on the Mars Science Laboratory Rover Curiosity: Remote Sensing by Laser-Induced Plasmas Authors: Wiens, R. C., S. Maurice, and the ChemCam Team Journal: Geochemical News Affiliations: Los Alamos National Laboratory (USA), Institute de Recherche en Astrophysique et Planetologie (France) Take Home Importance According to Authors: The ChemCam…

Thanksgiving chemistry- cranberries and your blood

To do the biological study of how particular (good) chemicals like antioxidants affect people, there needs to be a quick, reliable, and consistent way to measure those chemicals in humans. Furthermore, a good method would test for multiple chemicals, because the health benefits from some chemicals only exist in the presence of others (phenolic acids and flavonoids in this case). The authors of this paper demonstrate a gas-chromatography mass-spectrometry (GC-MS) method to investigate how some of the chemicals present in cranberries (from cranberry juice) go into your bloodstream after you ingest them.

Electrochemical Mechanism of Ion–Ionophore Recognition at Plasticized Polymer Membrane/Water Interfaces

Title:  Electrochemical Mechanism of Ion–Ionophore Recognition at Plasticized Polymer Membrane/Water Interfaces Author:  Ryoichi Ishimatsu, Anahita Izadyar, Benjamin Kabagambe, Yushin Kim, Jiyeon Kim, and Shigeru Amemiya Journal:  Journal of the American Chemical Society Affiliation:  Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania, 15260 Take…