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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...

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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.

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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.

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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

Selenium sampled: Graphite furnace atomic absorption spectrometry

Date: Jun 1, 2017

Author:

Continuous sample drop flow microextraction coupled with iridium-modified tube graphite furnace atomic absorption spectrometry offers a new, highly sensitive technique for measuring the trace element selenium in blood samples.

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Journal Highlight: The effectiveness of multi-element fingerprints for identifying the geographical origin of wheat

Date: May 1, 2017

Author: spectroscopyNOW

The multi-elemental compositions of wheat have been analysed by high-resolution ICPMS with multiway analysis of variance to investigate the influences of region, genotype, harvest year and their interactions on all elements.

Read More thumbnail image: Journal Highlight The effectiveness of multi-element fingerprints for identifying the geographical origin of wheat

Pre-concentrated silver: FAAS analysis

Date: Apr 15, 2017

Author: David Bradley

Researchers in China have used a cloud point extraction (CPE) method to pre-concentrate trace levels of silver present in water samples for subsequent flame atomic absorption spectrometry (FAAS) analysis.

Read More thumbnail image: Pre-concentrated silver FAAS analysis
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