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Atomic Spectroscopy

Changes in the chemistry and structure of enamel due to a commercial non-peroxide-based home bleaching product were studied in vitro using several techniques including electron probe microanalysis, flame atomic absorption spectroscopy and total reflection X-ray fluorescence.

Atomic absorption spectroscopy reveals the chemical cocktail of gaseous emissions produced by the incineration of spent alkaline batteries.

The level of heavy metal contamination in indoor room dust is evaluated and its relationship to the external environment examined. Samples of outdoor fallen dust, indoor room dust and street dust were collected from two different environmental locations in Aswan city, Egypt.

Recycled engine oil has high levels of organic impurities, heavy metals, and carcinogenic compounds, according to work carried out by researchers in Jordan. They have used atomic absorption (AA), inductive couple plasma (ICP) and Fourier transform infrared (FTIR) analyses to spot the differences between virgin and recycled engine oil.

Orange jasmine leaves were collected from three different sites in the area of Bangkok and the concentrations of Cu, Fe, Pb, Mn, Ni, Cr, and Zn were quantified by ICP-AES. All three Bangkok sites were polluted with heavy metals compared with a background site.

The Nobel Prize for Chemistry this year went to three scientists for the discovery and development of the glowing jellyfish protein green fluorescent protein (GFP). GFP underpins much of modern biochemistry specifically because of its power as an absorption and emission marker that lights up the behaviour of biological molecules.

Laser ablation-inductively coupled plasma-mass spectrometry has been used to study of a group of archaeological glass beads with a specific alumina-rich composition from East Africa, India and Sri Lanka.

A new spectroscopic approach to measuring the energy levels of an atomic system has been developed by US researchers. Amplitude spectroscopy can be used to measure the energies of an artificial atom, by scanning the amplitude of the radiation from the system and so overcomes one of the main barriers remaining before powerful quantum computers can be realised.

ICP-AES, stable isotope ratio mass spectrometry and HPLC have been used to distinguish the types of water (seawater or freshwater) in neighbouring locations in French Guiana where magrove trees flourish.

A new clue about the folding of proteins comes from studies with a novel technique known as kinetic terahertz absorption spectroscopy (KITA). Results have now been compared for the first time with X-ray diffraction (SAXS) results, and fluorescence and circular dichroism spectra to reveal how protein folding takes place in two stages on different timescales.

The cadmium contents of the shoots and roots of 93 weed species were determined by inductively coupled plasma optical emission spectroscopy and atomic absorption spectrometry, to determine the best species for cadmium phytoremediation.

Researchers in the USA and The Netherlands have pieced together a picture of the most exquisite of molecular machines using electron-microscopic tomography. The team has for the first time obtained a three-dimensional structure of the gossamer-like filament of proteins found within the inner ear that gives us our sense of hearing and balance.

The application of CE hyphenated to ICPMS has been demonstrated for the analysis of metallodrugs in real-world human serum and plasma, using the analysis of the ruthenium drug KP1019 as an example.

Dérick Rousseau and of the School of Nutrition, at Ryerson University, in Toronto, Ontario, and Paul Smith of the YKI, Institute for Surface Chemistry, in Stockholm, Sweden have used temperature-controlled environmental electron scanning electron microscopy (SEM) to look at the needle-like spikes of cocoa butter that scatter light and make chocolate turn grey.

The association of occupational lead exposure with low bone mass in a population working in a storage battery plant was studied using monophoton absorptiometry to measure bone mineral density.

Printed circuit boards from old computers and other electronic equipment could provide a new hydrocarbon feedstock for the petrochemical industry, according to European researchers.

The grafting of human scalp hair was used as a new application of this method to explore methyl mercury incorporation into human hair and to validate this model for mercury monitoring in hair.

Atomic absorption spectroscopy (AAS) has been used to reveal an appreciable difference in the pattern of metal ions distributed throughout the blood plasma of cancer patients compared with healthy volunteers.

A new method was developed for the speciation of inorganic tellurium species in seawater by inductively coupled plasma-MS following selective magnetic SPE separation using modified silica-coated magnetic nanoparticles.

An inexpensive, reusable, and portable hard water sensor based on a fluorescing strand of DNA could be possible thanks to research in Spain. The technology compares well in accuracy with complexiometric titration and atomic absorption spectroscopy but with none of their limitations.