Home

  • Program

    The Goldschmidt2020 program

  • Venue

    All about the venue and city

  • Registration

    Details of how to register to attend the conference and/or submit an abstract

  • Exhibition

    Information for and about exhibitors and sponsors

  • My Goldschmidt

    My program, purchases, connections, etc.

Home

Program

Events

  • Sponsor Seminars

  • Training Events

    These are scheduled events to help delegates test out the tools and platform we will be using for the Q&A and other events at the conference.

  • Workshops

    Our workshop program provides training and teaching in topics across geochemistry and related fields. We are currently liaising with the workshop organisers to ascertain if any workshops can become virtual. Any updates will be added to this page.

Locations

  • Conference Locations

    Location of the convention center and social events

  • Hotels

    The hotels are no longer available to book at the special rates agreed by the conference. Should you wish to cancel or change your hotel reservation please see the details below.

Information

Present your work

Attend

Exhibition

Sponsorships

My Goldschmidt

Role functions

Abstract Details

Elemental Analysis of Individual Nanograins in Meteorites by ICP-TOF-MS

Nakazato M, Yamashita S & Hirata T

Nakazato M, Yamashita S & Hirata T (2020) Goldschmidt Abstracts, 2020 1886

The author has requested that this abstract is not discussed on social media.

Sorry, the PDF cannot be displayed on your browser.

Download abstract

The author has not provided any additional details.

06n: Room 2, View in program

Masaki Nakazato
Shuji Yamashita
Takafumi Hirata View all 4 abstracts at Goldschmidt2020

Listed below are questions that have been submitted by the community that the author will try and cover in their presentation. To submit a question, ensure you are signed in to the website. Authors or session conveners approve questions before they are displayed here.

Submitted by Yankun Di on
What isotopes can be analysed on these samples using ICPTOFMS and what kind of precision (roughly) do you think can be achieved?
Thank you for the question! We can measure any isotopes with m/z between 18 to 256 from single grain by ICP-TOF-MS. The precision depends on the Poisson counting statistics, and about 10% of uncertainties may remain for the measurement of 100 nm grains by ICP-TOF-MS. (additional info. to the Q&A session) Interference of polyatomic ions are reduced by applying collision/reaction gas. Mass resolution achieved by Time-of-Flight mass separation is about 3000, and further pseudo-high resolution is also available.

Submitted by Yuri Amelin on
How do you achieve high throughput of >100 grains per minute while collecting the ablated material in water? Do you have some kind of automated system for handling liquid samples?
Thank you for the question! We prepare samples by LAL technique before measurements by ICP-TOF-MS. As the result of the sample preparation, we obtain a liquid dispersion of nano-sized grains collected from meteorites (roughly 10,000 grains/mL). For the measurements, we can introduce the liquid dispersion through the liquid nebulization system. This enables the high throughput of grains constantly. At this moment, each procedure is not automated, unfortunately. (additional info. to the Q&A session) About 0.03 mL/min of the sample dispersion is introduced into ICP, and about 40% of grains within it are detectable. Therefore, if the sample contained 10,000 grains/mL, detection of 120 grains/min are theoretically expected.

Sign in to ask a question.