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Stable Isotope Geochemistry

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Matthew Birck
Wed, 29 May 2024 09:32:21 -0400
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There is a position open at U.S. Customs and Border Protection in either Newark, NJ or Savanah, GA. This is a non-supervisory GS-13 position - salary differs by location.

Please note that the opening closes on 6/3.

https://www.usajobs.gov/job/792462600
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Ibarra, Daniel
Wed, 29 May 2024 07:59:08 -0400
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Dear ISOGEOCHEM,

We have an exciting position available at Brown University for an Isotope
Mass Spectrometry Specialist! This position oversees operations, major
repair, and training in the use of isotope ratio mass spectrometers (e.g.,
gas-source, inductively coupled plasma) in the Department of Earth,
Environmental and Planetary Sciences (DEEPS) at Brown. The position also
supports research and development related to novel isotopic methods,
including collaboration with students and faculty.

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Lesley Chesson
Tue, 28 May 2024 16:31:02 -1000
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Dear ISOGEOCHEM members,

*Please note that I am posting this on behalf of a colleague; follow the
link below for more information on the position.

The Department of Homeland Security, U.S. Customs and Border Protection, is
hiring an IRMS Specialist. The job is located in either Newark, NJ or
Savannah, GA. Details can be found here:
https://www.usajobs.gov/job/792462600

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WATSON COST Action
Sun, 26 May 2024 16:28:48 -0400
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Time flies, and four years have already passed. WATSON is now wrapping up its activities.
We will be happy to share the outcomes of WATSON’s work with you, and to enjoy talks and posters on our favorite topic... WATER ISOTOPES IN THE CRITICAL ZONE

The Final Online Action Conference is planned for 10-12 September 2024. Don’t forget to submit an abstract before 10 June: https://watson-cost.eu/foac/ Please share the information about the online conference in your network. Registration will open later and is free.

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McIntosh, Julia A
Wed, 22 May 2024 15:44:04 +0000
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Dear Colleagues,
We welcome submissions to the Geological Society of America Connects 2024 (22-25 September) conference Topical Session: T9. Ore Genesis in Extensional Tectonic Environments.

Session Description: The global increase in demand for minerals of economic importance has prompted many countries to identify "critical" mineral and metal commodities. The current U.S. critical mineral commodities list includes 50 elements and minerals (U.S. Geological Survey, 2022), though other unlisted materials, such as copper, are still vital to global economic sectors like healthcare, technology, and construction (Fortier et al., 2023). Extensional tectonic systems are often associated with ore deposits, consisting of economic elements

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Heiko Moossen
Tue, 21 May 2024 16:01:42 +0000
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Dear colleagues,
Does anyone know of a study that looked at the permeability of N2O and CH4 through a Nafion membrane, maybe even while looking at different drying gases, e.g. air, N2 and He. Or does anyone have other sources/information on the topic?
Thanks in advance,
Heiko

Dr. Heiko Moossen

Stable Isotope Laboratory

Max-Planck-Institute for Biogeochemistry
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Bryant Labajo Pahl
Mon, 20 May 2024 13:13:27 -0700
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Hi everyone,

I'm a graduate student at UC Irvine and my lab is in the process of
replacing a Sartorius SE2 Ultra-microbalance for our stable isotope
laboratory. I'm messaging today to inquire about two things:

1) Has anyone had any experience repairing the SE2 (or any microbalance)
not through the manufacturer but through a third party source? Sartorius
mentioned that they cannot repair it because there are parts no longer
available, but we are curious if anyone knows of any third party repair
options.

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Audreyana Nash
Mon, 20 May 2024 12:10:47 -0400
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Dear all,

Compound specific stable isotope analysis of amino acids (CSIA-AA) has seen
exponential growth since its mainstream introduction in the early 1990s.
This growth, however, has been accompanied by the development of multiple
analytical approaches for derivatization, data correction, and quality
control that create challenges in comparing data across laboratories and
studies. To improve method optimization and facilitate growth of CSIA-AA,
we are proposing an interlaboratory sample exchange aimed at comparing
precision and reproducibility of amino acid carbon and nitrogen isotope
data across laboratories and derivatization techniques (e.g.,
trifluoroacetic anhydride, TFAA; n-pivaloyl n-isopropyl, NPIP; n-acetyl
methyl, NACME; and methyl

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Sylvia Dee
Mon, 20 May 2024 10:56:33 +0200
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The Sustainability Institute at Rice University is inviting applications
for postdoctoral fellows in sustainability solutions. We seek creative
scholars with research proposals that are interdisciplinary and tackle
sustainability problems in transformative, multidisciplinary ways.

Applicants are requested to submit a proposal of research to be undertaken
during the fellowship period. The principal selection criteria are
scholarly creativity and excellence, the applicant’s record of
productivity, and a clearly expressed research plan to address questions at
the forefront of their field of study. The proposed research should
encompass independent research ideas and explore new directions beyond the
applicant’s Ph.D.

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Vinai Rai
Sun, 19 May 2024 13:21:33 -0700
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Hi All;

The Isotope Cosmochemistry and Geochronology Laboratory in the School of Earth and Space Exploration (SESE) at Arizona State University invites applications for a postdoctoral research scholar in Isotope Cosmochemistry (Open Date:May 17, 2024)

Applications are invited for a postdoctoral position in the Isotope Cosmochemistry and Geochronology Laboratory (ICGL) directed by Professor Meenakshi Wadhwa in the School of Earth and Space Exploration at Arizona State University.

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Rugh, William Daniel
Fri, 17 May 2024 20:42:55 +0000
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Seems to be a very long backlog of orders for the Trajan 10 ul autosampler syring (PN 002982) that comes with the Picarro on installation. Knowing that all syringes are not created equal, I would like to know if labs have found other syringes that perform well.
Thank you in advance.

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Wang, Hongxiu
Fri, 17 May 2024 12:27:17 +0000
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Hi Everyone,

I would appreciate your expert guidance on the calibration of the Soli TOC cube.

The soli TOC cube we have analyzes TOC, ROC, and TIC. Different methods are used to perform the analysis: DIN19539, DIN19539GS, EN17505, and others.

My questions are as follows:

(1) Does the analysis method affect the calibration curve?

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joel savarino
Thu, 16 May 2024 16:43:47 +0200
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Dear list members and others

We are looking for a highly motivated post doc (2 years) or PhD student (3 years) interested by the analysis of clumped isotope of atmospheric nitrate and sulfate.
Current developments in clumped isotopic chemical analysis techniques should provide chemical information of unprecedented detail, allowing us to
understand isotopic enrichment on the scale of chemical bond rather than bulk samples. The goal of this project is to study selected cycles involving sulphur
and nitrogen chemistry in several reaction chambers: HELIOS (CNRS, Orléans) and CESAM (UPEC, Paris). Both of these chambers are uniquely well-
equipped to understand

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Jeremy Caves Rugenstein
Wed, 15 May 2024 15:51:09 -0600
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Hi all,

Save the date! Front Range Isotope Day (FRIDay) 2024 will be on Friday,
September 6 at Colorado State University in Fort Collins, CO. Please
mark your calendars and start brainstorming what new isotope discoveries
and research that you'd like to share in a poster, tech talk, or science
talk. We are looking forward to a fun day of talking "shop", learning
about the cool science that you all do with your isotopic toolkits, and
connecting with friends from up and down the Front Range (and beyond!)

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Cotton, Jennifer M
Wed, 15 May 2024 21:08:44 +0000
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Hello all -

We would like to encourage abstract submissions to our Fall 2024 GSA session "T115: Proxy and Model Records of Cenozoic Climate in South America” in Anaheim this September.

This session brings together proxy and model research into the complex development of Andean topography and impacts on changing hydroclimate and environments, to evaluate current knowledge on the evolution of South American climate across the Cenozoic.

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Tütken, Thomas
Wed, 15 May 2024 19:05:11 +0000
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Dear all,
We kindly invite you to submit an abstract for our session (T117) “New Advances in the Analysis of Biogenic Hard Parts (Sclerochronology) – Novel Applications, Proxies and Insights” at the annual meeting of the Geological Society of America GSA connects 2024 (22-25 September 2024) (https://community.geosociety.org/gsa2024/home) which takes place in Anaheim, California/U.S.A. The session topic should be of considerable interest for the isotope geochemistry community. Please find the session description below.

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Rugh, William Daniel
Tue, 14 May 2024 16:22:34 +0000
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We've lost communication between Q-Tegra software and our Flash EA again. Last time I had to re-install. This usually happens during column heat-up cycle.
I'm hoping there is an initializing file ( .int) that can be erased to force it to create a new one when starting Q-Tegra but can't find one. Anyone have a better solution than re-installation?

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Gregory Henkes
Tue, 14 May 2024 12:01:43 -0400
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Dear Colleagues,

I am pleased to invite you to prepare and submit abstracts for the 9th International Clumped Isotope Workshop, held at Stony Brook University on Long Island, NY from August 25th to the 28th. This is the week following Goldschmidt. We will accept abstracts until July 7th, after which a regional organizing committee (listed below) will review abstracts and construct the scientific program. A workshop registration page is under construction and those details will be shared separately.

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Rahn, Thom
Mon, 13 May 2024 22:32:18 +0000
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Hey List. We have recently run into a sample transfer issue that we're hoping the hive can help with. We've got H2O samples (~1 ml per) coming from ~1000 feet below ground in southern New Mexico to 7000 feet in northern NM via Memphis (fedex and who knows what altitude pressure changes) and when they get here, they are often basically no longer in the vial so we end up pippetting them from the secondary baggies (obviously not ideal) before autosample injections. Anyone else ever deal with this issue and have a brand of vials that they recommend that are 

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Claire Normandeau
Mon, 13 May 2024 08:22:13 -0400
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Dear all,

Please note that this is the last week to register for the ASITA 2024 conference in Halifax at the regular price.
https://asita2024.com/

Registration available until June 5th, 2024.
Regular registration: 275.00 $ (+ HST) until May 17th, 2024
Late registration: 375.00 $ (+ HST) starting May 18th, 2024
Registration includes lunches, ice breaker, pub night and banquet.

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Leah Chibwe
Thu, 9 May 2024 16:46:20 -0400
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Hi all,

I have been asked to do N isotope analysis on uranium nitride pellets and or loose powder, containing depleted uranium (~1g of uranium nitride contains U-238 as the only U isotope, with an activity of 11.7 kBq).

I am looking into this, as well as any radiation safety requirements - but just wondering if any one has had any experience with running these type of samples. If so, any other thoughts on things I'd need to consider before taking this on? If there is nothing, perfect. But thought to ask the community.

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Natasha Sekhon
Wed, 8 May 2024 15:58:05 -0700
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Dear All,

Please see below for a job posting for a VAP position at a liberal arts
college in Los Angeles, CA:

*Visiting Assistant Professor Position, Geology, Occidental College*

The Department of Geology at Occidental College invites applications for a
full-time Visiting Assistant professor for the 2024-25 academic year,
beginning August 16, 2024. We seek an earth scientist to teach several
introductory geology courses with labs. A Ph.D. is preferred; ABD
candidates and part-time applicants will be considered. Occidental is a
nationally ranked liberal arts college recognized for its diverse student
body and outstanding undergraduate research program. Candidates should
submit

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Sarah Goldsmith
Tue, 7 May 2024 16:27:45 -0400
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Hello Isogeochem, I once again come to you for your collective wisdom...

We have had a long journey so far (and made many amateur mistakes!) in attempting to diagnose the cause of significant N15 drift over the course of a run. Most recently, I have been trying to figure out the cause of a large (~100mV) N blank, which has been increasing over the course of the run. I currently suspect the autosampler carousel. We have a MAS plus autosampler-- not a zero blank, but usually our N blanks are around 20mV.

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Kate Martin
Fri, 3 May 2024 14:22:07 +0000
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If you're interested in a change of direction, PICARRO Environmental Team Americas is hiring!
We have a couple of great opportunities to join our amazing team of brilliant minds supporting the growth of our business unit with environmental science instruments.

For more details about the positions please see the below links or drop me a line!

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Jorge Luiz Filho
Fri, 3 May 2024 13:59:20 +1200
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Hello everybody!

I don't know if anyone here faces that kind of issue with strange high
values for Source Current at Isoprime Vision IRMS.

After a blow filament and a sundelly complete stop of all communications,
the filament was replaced and a good vacuum established. Looking at the
Readbacks (Magnet and Source Off).

[image: image.png]

Source Current at 207.2, even with Magnet and Source off.

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Mostafa Fayek
Thu, 2 May 2024 15:55:32 +0000
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Dear All,

We would like to bring to your attention the following:

M.Sc., Ph.D. and Post-Doc positions in Critical Mineral research at the University of Manitoba

Are you passionate about cutting-edge research and eager to make a meaningful impact? Look no further! The Department of Earth Sciences, University of Manitoba is seeking talented and motivated graduate students, and young researchers to join our vibrant research community. Funding is available to support several M.Sc. and Ph.D. students, and post-doctoral researchers. Projects include Critical Mineral research (primarily Li in igneous systems). This work is in partnership with academic partner Lakehead University, and

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MILLER, Jodie
Thu, 2 May 2024 15:02:47 +0000
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Dear Colleagues,

We are pleased to announce that the next iteration of the TANGR meeting will be held at the International Atomic Energy Agency (IAEA) from the 29th of October to the 1st of November (Tuesday to Friday inclusive) on the Application of Atom Trap Trace Analysis in Water Resource Management.

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jesse walters
Thu, 2 May 2024 12:22:48 +0200
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Dear colleagues,

We are offering a full time four-year PhD position in petrology and
geochemistry at the Institute for Earth Sciences, University of Graz,
Austria. Research areas include isotope geochemistry, metamorphic
petrology, tectonics, and economic geology. Potential projects include
redox reactions during high-pressure subduction zone metamorphism,
constraining the time- and length-scales of fluid flow in subducting slabs,
dating deformation during exhumation of metamorphic core complexes, and the
isotopic and geochronologic fingerprinting of intrusive carbonatites.

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Markus Grimmer
Thu, 2 May 2024 05:11:15 -0400
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Hi IRMS experts,

Since a couple of months, our dual-inlet MAT253 IRMS has spurious phases of instable signal. From peak center scans taken during these phases of instability, it looks as if these instabilities were caused by a jumps of the HV by some 10-100V (see attached figure). The instability occurs for different cups and under different source parameter settings, such that a malfunctioning cup or an unfortunate combination of source parameter settings should not be the issue.

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<>
Thu, 2 May 2024 14:16:54 +0800
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Hi,

We at the International Center for Isotope Effects Research (ICIER), Nanjing University, China are actively recruiting new faculty members to join our dynamic team. We seek candidates for three distinct positions, each focusing on the exploration and application of isotope effects:

1. A noble-gas specialist with robust analytical skills. This position offers flexibility, available at the rank of research associate, technical staff (permanent), or tenure-track/tenured professor, contingent upon the candidate's qualifications.
2. A physical chemist, eligible for appointment at the rank of tenure-track assistant professor.
3. A molecular physiologist, also eligible for appointment at the rank of tenure-track assistant

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Mann, Jacqueline L. (Fed)
Wed, 1 May 2024 18:06:28 +0000
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Hello Isogeochem Team,

I would be very grateful if you could post the following open position to the Listserve.

The National Institute of Standards and Technology (NIST) has an immediate opening for a Postdoctoral Researcher in the Optical Measurements Group. The Postdoctoral Researcher will perform cavity ring-down spectroscopy (CRDS) to quantify radiocarbon (14C) in mixed petrogenic and biogenic samples of carbon dioxide (CO2), as well as in samples of CO2 preconcentrated from air. Key responsibilities include sample preparation and preconcentration system design, performing CRDS, and establishing measurement traceability. Qualified candidates will have completed their PhD within the last 5 years,

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Amanda Spivak
Wed, 1 May 2024 13:57:18 +0000
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The Spivak Coastal Biogeochemistry lab seeks a full-time lab manager or technician to assist with research on ‘blue carbon’ cycling in salt marshes. We seek a highly motivated and detail oriented individual with a background in biogeochemistry and / or soil science and experience conducting geochemical analyses using a range of instrumentation.
The primary responsibilities include:
- Conduct organic and inorganic analyses of soil and water samples
- Run and maintain instrumentation (e.g., ion chromatograph, GC-MS, gas analyzers, spectrophotometer, microsensors, etc.) and other lab equipment
- Assist group members with lab and field experiments
- Occasional travel for field work

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