Category: elemental analysis

How to find out just what is in tattoo ink

Metallic contaminants in tattoo ink can be identified using Postnova AF2000 FFF system

The growing popularity of tattoos, especially among young adults, raises concerns about the composition of tattoo inks and any potential long-term health effects they present. The European Commission Joint Research Centre recently noted that about 12 percent of Europeans have…

How to determine the CHN content of soils

A NEW application note demonstrating the precise determination of the carbon, hydrogen, and nitrogen (CHN) content of soil samples has been released by Exeter Analytical. This useful document includes details of the analytical methodology, used plus data demonstrating the quality…

Measuring total sulphur quickly and reliably

INDUCTIVELY Coupled Plasma – Optical Emission Spectrometry (ICP-OES) is a powerful and sensitive technique employed by Warwick Analytical Service to determine total sulphur in both organic and inorganic samples. The method can be used across a broad range of sample…

How to determine CHN in volatile samples

A KEY factor in predicting the performance of petroleum fuels and lubricants is the percentage of carbon, hydrogen, and nitrogen (CHN) they contain. However, the volatile nature of these materials means that conventional elemental analysis is difficult to carry out.…

Preparing purple moor grass for elemental analysis

PURPLE Moor Grass, Molinia caerulea, is a common plant in northern Europe and is of scientific interest for the ratios of carbon and nitrogen in contains. The analysis of the material is itself straightforward, but preparing samples for analysis has…

Direct determination of CHN in filter residue

A PROTOCOL for the direct determination of total CHN (carbon, hydrogen, nitrogen) in filter samples using the Model 440 elemental analyser has been published by Exeter Analytical. The company says using this technology to determine the percentage C, H, and…

Factors affecting CHN analysis

THE CHN (carbon, hydrogen, nitrogen) elemental analyser is a mainstay of many analytical laboratories, and a new white paper from Exeter Analytical helps to throw some light on the factors affecting the performance of these instruments. Looking at the way…