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Articles & Whitepapers

Strontium dating of foraminifera, shells & corals

Strontium dating (as enabled by the 87Sr/86Sr ratio of marine carbonates) can be used to date various marine samples based on the premise that the mixing of oceanic strontium occurs relatively rapidly through time compared to the residence time of oceanic strontium. This creates a uniform global marine 87Sr/86Sr ratio at a given point in time; the fluctuations over millions of years represent a ...

Air Pollution Part 2 – Sources of Gaseous Substances

Air pollutants are effectively either specific gas-phase molecules or small solid-phase particles suspended in the air. The latter are as a collective referred to as particulates. Let’s take a ...

Industry Tests Find No Free-Standing Nanotubes Released from Tyre Wear

UK-based Emissions Analytics state that their investigation shows that the microscopic particles from tyre wear can be airborne and most end up being deposited at the roadside, if not on the road. Being airborne, there is potentially a risk to the ...

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Oil in Water/Soil Analyzer

The InfraCal 2 TRANS-SP is recommended for measuring oil in water, TPH in soil or FOG in wastewater concentration levels using the traditional EPA methods 413.2 and 418.1 or ASTM method D7066-04and Freon-113, hydrocarbon-free grade of perchloroethylene, AK-225, S-316 or other spectroscopic infrared transparent solvent as the extracting solvent. Since the extract is deposited into a 10 mm quartz ...