slide1
Download
Skip this Video
Download Presentation
Laser Ablation ICP-MS at the University of Gothenburg

Loading in 2 Seconds...

play fullscreen
1 / 8

Laser Ablation ICP-MS at the University of Gothenburg - PowerPoint PPT Presentation


  • 189 Views
  • Uploaded on

Laser Ablation ICP-MS at the University of Gothenburg. Thomas Zack , Johan Hogmalm , Dave Cornell Department of Earth Sciences, University of Gothenburg, Sweden. Research tool : LA-ICP-MS . Flexibility and innovations possible due to compartmentalization. Microscope. Laser. ICP-MS.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Laser Ablation ICP-MS at the University of Gothenburg' - rusti


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1
Laser Ablation ICP-MS atthe University ofGothenburg

Thomas Zack, Johan Hogmalm, Dave Cornell

Department of Earth Sciences, University of Gothenburg, Sweden

slide2
Research tool: LA-ICP-MS

Flexibilityandinnovationspossible due tocompartmentalization

Microscope

Laser

ICP-MS

Carrier gas

Sample holder

Laser: 213 nmNd:YAGlaser, fullyautomizedstagecontrol

Sample holder: Large Format Cell (10 x 10 cm)

(bigsamples, fast wash-out, bettersensitivity)

Carrier gas: Addition ofnitrogentoenhancetransportefficiency

ICP-MS: Agilent 7500a; 2nd vacuum pump forenhancedsensitivity

slide3
Currentstatusandfuture plan

2006

2014?

+

Reaction gas (O2)

16O2+

16O2+

32S+

48Ca/48Ti, 36Ar12C

32S16O+

  • Agilent 7500a
  • Li to U (not H, C, N, O)
  • ng/g @ 100 µm, µg/g @ 4 µm
  • ..polyatomicinterferences
  • Agilent 8800
  • Tackle „difficultelements“:
  • …S, P, Cl, As, Se, Br
  • 10x more sensitive!
  • .polyatomicinterferences

32S+  32S16O+

48Ca/48Ti, 36Ar12C

Q2 (m/z 48) – rejects all ions apart from m/z 48

Q1 (m/z 32) – rejects all ions apart from m/z 32

slide4
MethoddevelopmentrelatedtoEconomicGeology
  • Halogens (Br, Cl) in minerals
  • Origin of hydrothermal fluids
  • Breakthroughs:
  • Reductionofbackground (Brtrap)
  • DetectionlimitforBr <5 ppm
  • TestingofglassstandardsforBrand Cl

Köhler et al 2008

slide5
MethoddevelopmentrelatedtoEconomicGeology
  • Traceelements (e.g., Au, PGE) in sulphides
  • Invisible gold, oredepositmodels, geometallurgy
  • Breakthroughs:
  • Availibilityofexcellentsulphidestandards (Mass-1, Po-724)
  • Standardizationwithout EMP data
slide6
MethoddevelopmentrelatedtoEconomicGeology

Traceelements (e.g., Au, PGE) in sulphides

slide7
MethoddevelopmentrelatedtoEconomicGeology
  • Other projects
  • Accessorymineraldating (rutile, monazite, titanite)
  • Magnetite fingerprinting
  • Gold in rutile
  • S andPb isotopes
  • Traceelementmapping

Large et al 2009

slide8
CollaborationsrelatedtoEconomicGeology

Boliden Larver 2 master

CGS Bushveld Hammond

Tasman NorraKärre 1 master

Agnico Eagle Dalsland 1 master

LKAB Kiruna 1 bachelor

Du Pont world-wideMcLimans

VedantaGamsberg Moses

ad