%0 Journal Article %1 Dutta:2001p507 %A Dutta, T %A Harayama, S %D 2001 %J Analytical Chemistry %K imported %N 5 %P 864--869 %T Time-of-flight mass spectrometric analysis of high-molecular-weight alkanes in crude oil by silver nitrate chemical ionization after laser desorption %U http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000167283200012 %V 73 %X Time-of-flight mass spectrometry was used for the first time to analyze the hydrocarbons in crude oil. Alkanes in the saturated fraction of a;crude oil sample were chemically ionized by the laser desorption of silver nitrate, and the silver-attached C-24-C-60 alkanes were resolved with mass accuracy below 7 ppm. This technique was used to evaluate the biodegradation of aliphatic hydrocarbons and cycloalkanes by oil-degrading microorganisms resident in seawater. It is shown that the aliphatic hydrocarbons were degraded in the range of 60-80%, while the mona-, di-, tri-, tetra-, and pentacycloalkanes were degraded in the range of 40-55, 20-30, 10-16, 5-9, and 15%, respectively. Its high sensitivity and speed of application could result in an analysis by laser desorption silver chemical ionization time-of-flight mass spectrometry being the method of choice for determining high-molecular-weight hydrocarbons in various petroleum products. %Z ISI Document Delivery No.: 407QX Times Cited: 23 Cited Reference Count: 34 AMER CHEMICAL SOC

@article{Dutta:2001p507, abstract = {Time-of-flight mass spectrometry was used for the first time to analyze the hydrocarbons in crude oil. Alkanes in the saturated fraction of a;crude oil sample were chemically ionized by the laser desorption of silver nitrate, and the silver-attached C-24-C-60 alkanes were resolved with mass accuracy below 7 ppm. This technique was used to evaluate the biodegradation of aliphatic hydrocarbons and cycloalkanes by oil-degrading microorganisms resident in seawater. It is shown that the aliphatic hydrocarbons were degraded in the range of 60-80%, while the mona-, di-, tri-, tetra-, and pentacycloalkanes were degraded in the range of 40-55, 20-30, 10-16, 5-9, and 15%, respectively. Its high sensitivity and speed of application could result in an analysis by laser desorption silver chemical ionization time-of-flight mass spectrometry being the method of choice for determining high-molecular-weight hydrocarbons in various petroleum products.}, added-at = {2010-06-22T19:38:37.000+0200}, affiliation = {Marine Biotechnol Inst, Kamaishi, Iwate 0260001, Japan. Harayama, S, Marine Biotechnol Inst, 3-75-1 Heita, Kamaishi, Iwate 0260001, Japan.}, annote = {ISI Document Delivery No.: 407QX Times Cited: 23 Cited Reference Count: 34 AMER CHEMICAL SOC}, author = {Dutta, T and Harayama, S}, biburl = {https://www.bibsonomy.org/bibtex/20a359a43a697afa1829142586c425ab1/gsmith}, date-added = {2010-03-10 16:47:17 -0500}, date-modified = {2010-03-10 16:48:22 -0500}, interhash = {acd1d5e56d07737598a587174b574632}, intrahash = {0a359a43a697afa1829142586c425ab1}, journal = {Analytical Chemistry}, keywords = {imported}, label = {rec-number 1904}, local-url = {file://localhost/Users/geoffreysmith/Documents/Papers/Analytical%20Chemistry/2001/Analytical%20Chemistry,%2073,%20864-869%202001.pdf}, month = Mar, number = 5, pages = {864--869}, pmid = {000167283200012}, rating = {0}, read = {Yes}, timestamp = {2010-06-22T19:39:26.000+0200}, title = {Time-of-flight mass spectrometric analysis of high-molecular-weight alkanes in crude oil by silver nitrate chemical ionization after laser desorption}, uri = {papers://E88B624E-D406-46FF-9D95-BB9C1AAE3FDC/Paper/p507}, url = {http://links.isiglobalnet2.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=mekentosj&SrcApp=Papers&DestLinkType=FullRecord&DestApp=WOS&KeyUT=000167283200012}, volume = 73, year = 2001 }