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Journal Highlight: A framework for the extraction and interpretation of organic molecules in speleothem carbonate

Date: May 19, 2014

Author: separationsNOW

Three pieces of speleothem calcite were subjected to a rigorous extraction procedure based on sequential digestion for measuring the concentration profiles of individual compounds with increasing distance from sample surfaces.

Read More thumbnail image: Journal Highlight A framework for the extraction and interpretation of organic molecules in speleothem carbonate

Spent handgun cartridges: Headspace sorptive extraction to estimate time since discharge

Date: May 12, 2014

Author: Steve Down

A sensitive method for trapping volatile compounds emitted by spent handgun cartridges involves headspace sorptive extraction and allows the aging profile and the time since firing to be determined.

Read More thumbnail image: Spent handgun cartridges Headspace sorptive extraction to estimate time since discharge

Fly fixing: Moulded target for mass spectrometry imaging of intact fruit flies

Date: Apr 21, 2014

Author: Steve Down

Special targets have been designed by European scientists for mass spectrometry imaging experiments to give reproducible positioning of male and female fruit flies that produces more consistent results and helps to eliminate mass deviations.

Read More thumbnail image: Fly fixing Moulded target for mass spectrometry imaging of intact fruit flies

Journal Highlight: Passive sampling methods for contaminated sediments: State of the science for organic contaminants

Date: Apr 14, 2014

Author: separationsNOW

The literature on passive sampler methods used in contaminated sediments to assess the chemical activity of organic contaminants has been reviewed and some of the future challenges outlined.

Read More thumbnail image: Journal Highlight Passive sampling methods for contaminated sediments State of the science for organic contaminants

Preventing drug degradation: Opiate stability in stored blood

Date: Apr 7, 2014

Author: Steve Down

The effects of the storage conditions on the stability of morphine, codeine and 6-acetylmorphine in blood have been assessed by Greek scientists, who found that sodium fluoride is the best agent for stabilising concentrations.

Read More thumbnail image: Preventing drug degradation Opiate stability in stored blood

Don’t drop it: Stabilising suspended air bubbles for microextraction

Date: Mar 24, 2014

Author: Steve Down

A device for single-drop microextraction using a liquid-gas compound pendant drop has been designed and demonstrated by Chinese scientists, providing greater drop stability and reduced extraction times.

Read More thumbnail image: Dont drop it Stabilising suspended air bubbles for microextraction

Journal Highlight: Suspension trapping (STrap) sample preparation method for bottom-up proteomics analysis

Date: Mar 17, 2014

Author: separationsNOW

The suspension trapping (STrap) method has been described and applied to the analysis of cellular lysates, enriched membrane preparations and immunoprecipitates.

Read More thumbnail image: Journal Highlight Suspension trapping STrap sample preparation method for bottom-up proteomics analysis

Scraping the barrel: Getting the most out of archaeological pots

Date: Mar 10, 2014

Author: Steve Down

A novel method for effectively removing organic residues from archaeological pots gives higher recoveries of lipid residues, allowing a clearer characterisation of the original contents.

Read More thumbnail image: Scraping the barrel Getting the most out of archaeological pots

Cosmetic musks: Supported liquid extraction

Date: Feb 24, 2014

Author: Steve Down

An efficient way to remove synthetic musks from cosmetic creams combining supported liquid extraction and solid-phase extraction has been devised by Chinese scientists for subsequent GC/MS measurement.

Read More thumbnail image: Cosmetic musks Supported liquid extraction

Journal Highlight: Commercial DNA extraction kits impact observed microbial community composition in permafrost samples

Date: Feb 17, 2014

Author: separationsNOW

The extraction of total community genomic DNA (gDNA) from permafrost is influenced by the type of commercial DNA extraction kit, reproducible results being achieved with gDNA from the three bead-beating lysis extraction kits.

Read More thumbnail image: Journal Highlight Commercial DNA extraction kits impact observed microbial community composition in permafrost samples
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