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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

Journal Highlight: Next generation ice core technology reveals true minimum natural levels of lead (Pb) in the atmosphere: insights from the Black Death

Date: Jul 3, 2017

Author: spectroscopyNOW

ICP-MS and ultra-high resolution LA-ICP-MS measurements of atmospheric lead deposition in a glacier in the Swiss-Italian Alps contradict conventional wisdom, showing that natural background levels occurred only in a single four-year period, during the Black Death, in the 2000 years documented.

Read More thumbnail image: Journal Highlight Next generation ice core technology reveals true minimum natural levels of lead Pb in the atmosphere insights from the Black Death

Answering Life's Questions with Spectroscopy

Date: Jun 28, 2017

Author: Jon Evans

Spectroscopy has been a common analytical technique in laboratories for many years. Recently, however, it has begun to emerge from the laboratory, both figuratively and literally, as more and more researchers discover that it is ideally placed to answer the questions they want to ask.

Read More thumbnail image: Answering Lifes Questions with Spectroscopy

Understanding diabetes: Atomic absorption spectrometry assists

Date: Jun 15, 2017

Author: David Bradley

Type 1 diabetes is a major cause of debilitation and premature death. Treating the disorder is complicated and costly. Now, a team in Brazil is using atomic absorption spectrometry and other techniques to look for potential metallic biomarkers for copper, magnesium, selenium, and zinc to correlate their concentrations with the patient metalloproteome.

Read More thumbnail image: Understanding diabetes Atomic absorption spectrometry assists

Journal Highlight: Characterization of Ag and Au nanolayers on Cu alloys by TLC, SEM-EDS, and ICP-OES

Date: Jun 6, 2017

Author: spectroscopyNOW

Chromatographic, spectroscopic, and microscopic techniques have been employed to study four historical samples made of silver-plated and gilded copper alloys from the 19th century originating from Croatia.

Read More thumbnail image: Journal Highlight Characterization of Ag and Au nanolayers on Cu alloys by TLC SEM-EDS and ICP-OES
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