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Hot attraction: Atomic interferometry

Date: Dec 15, 2017

Author: David Bradley

 Hot bodies attract atoms, contrary to what physicists had assumed. The proof is in the atom interferometry data from researchers in the USA. Steven Chu of Stanford University and formerly the University of California Berkeley, Claude Cohen-Tannoudji, and William Phillips used optical tweezers to observe the minute effect.

Read More thumbnail image: Hot attraction Atomic interferometry

Journal Highlight: Delicate changes of bioapatite mineral in pig femur with addition of dietary xylooligosaccharide: Evidences from Raman spectroscopy and ICP

Date: Nov 27, 2017

Author: spectroscopyNOW

Mineralogical changes of mineral bioapatite in pig femur in animals raised with various xylooligosaccharide additions at two stages of growth have been studied by Raman spectroscopy and ICP-OES.

Read More thumbnail image: Journal Highlight Delicate changes of bioapatite mineral in pig femur with addition of dietary xylooligosaccharide Evidences from Raman spectroscopy and ICP

Silicon solution: AAS testing in multiple sclerosis

Date: Nov 15, 2017

Author: David Bradley

Transversely -heated graphite furnace atomic absorption spectrometry has been used to show that drinking silicon-rich mineral water can increase the rate of urinary excretion of toxic aluminium ions in people with secondary progressive multiple sclerosis (SPMS).

Read More thumbnail image: Silicon solution AAS testing in multiple sclerosis

Journal Highlight: A new procedure for determination of nickel in some fake jewelry and cosmetics samples after dispersive liquid–liquid microextraction by FAAS

Date: Oct 30, 2017

Author: spectroscopyNOW

A new, simple and cheap DLLME procedure that was optimized for the preconcentration of trace amounts of Ni(II) for its determination by FAAS has been applied to some fake jewelry and cosmetics samples.

Read More thumbnail image: Journal Highlight A new procedure for determination of nickel in some fake jewelry and cosmetics samples after dispersive liquidliquid microextraction by FAAS

Metals in meat: Bioavailability assessed by spectroscopy

Date: Oct 15, 2017

Author: David Bradley

Various techniques including graphite furnace atomic absorption spectrometry have been used to assess the bioavailability of metals ions present in beef, pork, and chicken after thermal treatment. The study shows that high temperatures make nutrient metal ions of calcium, copper, iron, magnesium and zinc less readily available.

Read More thumbnail image: Metals in meat Bioavailability assessed by spectroscopy

Journal Highlight: Quantitative and qualitative analysis of three classes of sulfur compounds in crude oil

Date: Oct 2, 2017

Author: spectroscopyNOW

Three different classes of sulfur species present in crude oils have been quantified by LC separation and on-line detection and quantification by ICP-MS/MS, which will facilitate the optimization of desulfurization conditions during fuel production.

Read More thumbnail image: Journal Highlight Quantitative and qualitative analysis of three classes of sulfur compounds in crude oil

Journal Highlight: First evidence of the use of freshwater pearls as a cosmetic in ancient China: Analysis of white makeup powder from a Northern Song dynasty Lv tomb (Lantian, Shaanxi Province, China)

Date: Sep 4, 2017

Author: spectroscopyNOW

A white powder identified as women's makeup found in a porcelain dish in a Chinese tomb has been identified as a product of freshwater pearls following analysis by ICP-AES, FTIR spectroscopy, SEM, X-ray diffraction and DSC-TG.

Read More thumbnail image: Journal Highlight First evidence of the use of freshwater pearls as a cosmetic in ancient China Analysis of white makeup powder from a Northern Song dynasty Lv tomb Lantian Shaanxi Province China

Gold too? Ions in the +II oxidation state

Date: Aug 15, 2017

Author: David Bradley

When it comes to atoms there are several seemingly immutable facts about many of them - their oxidation states or valencies are seemingly fixed. However, whereas gold is generally considered to exist as only gold(I) and gold(III), theoretically, a 2+ oxidation state should exist to fill the gap in the homologous series of the coinage metal ions copper(+II), silver(+II), gold(+II), and in the "relativistic" triad of platinum(+II), gold(+II), and mercury(+II). That gap has now been filled as chemists isolate...

Read More thumbnail image: Gold too Ions in the II oxidation state

Journal Highlight: Non-traditional isotope perspectives in vertebrate palaeobiology

Date: Jul 31, 2017

Author: spectroscopyNOW

Current knowledge surrounding the use of MC-ICP-MS and other geochemical methods in vertebrate palaeobiology has been reviewed, including a case study involving two mammal assemblages from the Pleistocene of Europe.

Read More thumbnail image: Journal Highlight Non-traditional isotope perspectives in vertebrate palaeobiology

Maltol assessed: Toxic enhancer determined by FAAS

Date: Jul 15, 2017

Author: David Bradley

Simple ultrasound extraction followed by flame atomic absorption spectrometry (FAAS) of food samples can be used to quickly determine concentrations of the potentially toxic flavour enhancer maltol.

Read More thumbnail image: Maltol assessed Toxic enhancer determined by FAAS
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