Selective detection of volatile nickel, vanadium, and iron porphyrins in crude oils by gas chromatography-atomic emission spectroscopy

✍ Scribed by Quimby, Bruce D. ;Dryden, Paul C. ;Sullivan, James J.

• Publisher: John Wiley and Sons
• Year: 1991
• Tongue: English
• Weight: 486 KB
• Volume: 14
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240140208

✦ Synopsis

This report describes the selective detection of volatile nickel, vanadium, and iron metalloporphyrins in crude oil samples. An possible to determine directly the volatile metal content of a crude oil as a function of its boiling point. atomic emission detector (AED) was used for simultaneous detection of these metals using the Ni 301.2 nm,V292.4 nm, and Fe 302.1 nm emission lines. Detection limits for these metals range from 0.05 to 5 pg/sec.The presence of volatile forms of these metals in several crude oil samples has been confirmed. Estes et al [S] have shown that gas chromatography-atomic emission spectroscopy (GC AES) provides a sensitive and selec tive means of detecting volatile organometallic compounds Plotting the intensity of an emission line for the metal of interest aqainst time results in a chrornatoqram with response only to . 1 " porphyrin complexes in an extract of a shale oil sample This suggests that with GC and metal-selective detection it may be Chromatography was performed using an HP 5890 Series I1 gas chromatograph equipped with a programmable, cool, on-column 1 10 Journal of High Resolution Chromatography