Sentences with phrase «elemental carbon»

Carbon dating is based on the half - life decays of elemental carbon and simply using a mathematical equation to pre-date back.

Researchers now use X-ray fluorescence spectrometry to measure air pollution metal content, ion chromatography to identify other chemicals and other tactics to assess organic and elemental carbon levels.

Evidence is mounting that petroleum is abiogenic in origin — and natural forces deep inside the Earth are constantly creating new hydrocarbons from elemental carbon and hydrogen.

Conversely, water - soluble particulate iron over the Pacific Ocean is linked to elemental carbon emissions resulting from anthropogenic activity in Asia (Chuang et al., 2005).

Butler then proceeded to lecture us on how Australia's emissions of «carbon pollution» (actually harmless CO2 gas, nothing to do with elemental carbon, and not pollution either) had risen by 1.4 %.

GRUBBY, grey graphite and searing, scintillating diamond — both forms of the same thing, elemental carbon.

The substrate is then coated with amorphous carbon — elemental carbon that, unlike graphite or diamond, does not have a regular, well - defined crystalline structure.

It's generally assumed that about 1/2 the mass of a tree is elemental carbon.

Snow samples have been measured for their elemental carbon (used as a proxy for black carbon) and mineral dust content in order to estimate their impact on snow reflectance.

Other components of fumes are oils, fats, aliphatic hydrocarbons, poly - aromatic hydrocarbons, aromatic amines, aldehydes and elemental carbon.»

The source we identified as road dust had most common soil elements as well as high amounts of ogarnic carbon, elemental carbon and sulfur.