alexa Laser [213-nm] Depth-profiling Studies Of V/Ni Ratios In Asphaltenes Following Liquid Nitrogen Pretreatment
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations

700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)

Share This Page

Additional Info

Loading
Loading Please wait..
 

3rd International Conference and Exhibition on Materials Science & Engineering
October 06-08, 2014 Hilton San Antonio Airport, USA

Avin Pillay
ScientificTracks Abstracts: Material Sci Eng
DOI: 10.4172/2169-0022.S1.014
Abstract
Author?s group has developed a rapid procedure of ablating asphaltene samples with a high-precision deep-UV laser (213 nm) following swift solidification by immersion in liquid nitrogen. Liquid nitrogen pre-treatment of such samples produces a solid mass whose material characteristics are suitable for depth-profiling studies. The petrified samples were brittle and fractured into discreet fragments under stress. Normally, laser ablation is limited to hard solids (that can resist deformation) and studies of such ?jelly-like? samples are usually not possible because of ?splashing? effects. Asphaltene samples were petrified in aliquots of liquid nitrogen and immediately subjected to laser irradiation. The study was conducted to investigate V/Ni ratios with depth and compare these ratios with the universal V/Ni ratio in the digested sample. Depth-profiling was limited to specific depths, and rapid spatial and sub-surface distributions of metal components in the petrified samples were achieved well before ?thawing? set in. An Nd:YAG deep UV (213nm) laser ablation system was attached to a high-precision ICP-MS instrument. The petrified samples were placed in a special sample holder with dimensions 5 cmx5 cm. Samples were subjected to 213-nm laser irradiation; the level of the beam energy was 60%, with a beam diameter of 55 μm. The laser ablated successive depths of 5 μm at each point and penetrated the sample to a depth of about 25 μm. Additional beam characteristics were as follows: fluence at the sample surface: ~4.5 J/cm2; dwell time: 5 s; repetition rate: 10 Hz. The experimental results showed promise and the distinct capability to record spectra in the absence of ?splashing? effects. This pre-treatment approach is therefore, highly viable, and a useful contribution to metal characterization of asphaltenes.
image PDF   |   image HTML
 

Relevant Topics

Peer Reviewed Journals
 
Make the best use of Scientific Research and information from our 700 + peer reviewed, Open Access Journals
International Conferences 2017-18
 
Meet Inspiring Speakers and Experts at our 3000+ Global Annual Meetings

Contact Us

Agri, Food, Aqua and Veterinary Science Journals

Dr. Krish

[email protected]

1-702-714-7001 Extn: 9040

Clinical and Biochemistry Journals

Datta A

[email protected]

1-702-714-7001Extn: 9037

Business & Management Journals

Ronald

[email protected]

1-702-714-7001Extn: 9042

Chemical Engineering and Chemistry Journals

Gabriel Shaw

[email protected]

1-702-714-7001 Extn: 9040

Earth & Environmental Sciences

Katie Wilson

[email protected]

1-702-714-7001Extn: 9042

Engineering Journals

James Franklin

[email protected]

1-702-714-7001Extn: 9042

General Science and Health care Journals

Andrea Jason

[email protected]

1-702-714-7001Extn: 9043

Genetics and Molecular Biology Journals

Anna Melissa

[email protected]

1-702-714-7001 Extn: 9006

Immunology & Microbiology Journals

David Gorantl

[email protected]

1-702-714-7001Extn: 9014

Informatics Journals

Stephanie Skinner

[email protected]

1-702-714-7001Extn: 9039

Material Sciences Journals

Rachle Green

[email protected]

1-702-714-7001Extn: 9039

Mathematics and Physics Journals

Jim Willison

[email protected]

1-702-714-7001 Extn: 9042

Medical Journals

Nimmi Anna

[email protected]

1-702-714-7001 Extn: 9038

Neuroscience & Psychology Journals

Nathan T

[email protected]

1-702-714-7001Extn: 9041

Pharmaceutical Sciences Journals

John Behannon

[email protected]

1-702-714-7001Extn: 9007

Social & Political Science Journals

Steve Harry

[email protected]

1-702-714-7001 Extn: 9042

 
© 2008-2017 OMICS International - Open Access Publisher. Best viewed in Mozilla Firefox | Google Chrome | Above IE 7.0 version
adwords