Concerning the masks treated with a sulfate free process, on Cr side, no residual sulfur has been detected by XPS, whereas few trace of nitrogen amount has been detected.
Additional elements may be present in steel: manganese, phosphorus, sulfur, silicon, and traces of oxygen, nitrogen, and aluminium.
Biogas is primarily composed of methane gas, carbon dioxide, and trace amounts of nitrogen, hydrogen, and carbon monoxide.
This gas contains approximately 20%to30%0% methane, 45% to 70% carbon dioxide, and trace amounts of nitrogen, oxygen, hydrogen, and hydrogen sulfide [37, 38].
Trace amounts of nitrogen in argon plasmas and in sulfur dioxide plasmas result in the incorporation of nitrogen in the surface of polymers like polyethylene.
The DiamondView tester from De Beers uses UV fluorescence to detect trace impurities of nitrogen, nickel or other metals in HPHT or CVD diamonds.
They were transferred to sporulation medium containing potassium acetate as the carbon source and trace amounts of nitrogen introduced by amino acid supplements that complemented the auxotrophies of the strain.
Binding energy positions at 397.2, 398.1, and 399.8 eV provide the assumption about an interstitial nitrogen incorporation with the trace of remained nitrogen-carbon bonds.
When the rover drilled a sample from it and heated it up in its onboard lab, it found traces of carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur — the building blocks of life.
