Nitrogen in petroleum

The determination of nitrogen in petroleum products is performed regularly by the Kjeldahl method (ASTM D3228), the Dumas method, and the microcoulomet-ric (ASTM D3431) method. The chemiluminescence method is the most recent technique applied to nibogen analysis for petroleum and is used to determine the amount of chemically bound nitrogen in liquid samples. 

A test method (ASTM D5291) is available for simultaneous determination of carbon, hydrogen, and nitrogen in petroleum products and lubricants. There are at least three instrumental techniques available for this analysis, each based on different chemical principles. However, all involve sample combustion, components separation, and final detection. 

Basic nitrogen nitrogen (in petroleum) that occurs in pyridine form. 

Basic nitrogen nitrogen (in petroleum) which occurs in pyridine form Basic sediment and water (bs w, bsw) the material which collects in the bottom of storage tanks, usually composed of oil, water, and foreign matter also called bottoms, bottom settlings. 

Drushell, H. V. (1977). Determination of nitrogen in petroleum fractions by combustion with chemiluminescent detection of nitric oxide. Anal. Chem. 49, 932-936. 

Almost all of the nitrogen in petroleum is found in ring compounds. These must be saturated and opened before the nitrogen can be removed. Figure 8 shows a widely aeeepted meehanism for the HDN of quinoline. The fast pathway requires 7 moleeules of hydrogen per nitrogen atom. The slow one... 

NOx emissions increased modestly during the coflring of petroleum coke at WCF, as is shown in Table 2.16. Given the high concentrations of char-bound nitrogen in petroleum coke and the rates of volatile nitrogen release as shown previously, this result is not unexpected. 

D5291 Test Method for Instrumental Determination of Carbon, Hydrogen, and Nitrogen in Petroleum Products and Lubricants ... 

This is the first ASTM standard covering the simultaneous determination of carbon, hydrogen, and nitrogen in petroleum products and lubricants. 

Bias—Since there is no acc ted petroleum based reference material suitable for determining the bias for the procedure in these test methods (D529I) for measuring carbon, hydrogen and nitrogen in petroleum products and lubricants, bias cannot be determined. 

Nitrogen in Petroleum and Petroleum Products by Boat-Inlet Chemiluminescence ... 

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