Kentucky Stable Isotope Geochemistry Lab (KSIGL)

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

In our line of work, there is but one answer to this question:

"Who knows? Weigh 5 mg into a tin capsule and we'll put it into the EA and see what happens"

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@And1129 I think our GasBench, in it's own special way, has been asking for the same treatment this week...

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@dimorei @labioarqueologa @ChrisStantis @chris_tt_cheung @WolfmannotJack @Andrea_Erhardt I agree with Wolfram, but if you do decide on a proof-of-concept study on yourself please count me out of the sampling portion. We're pretty good friends but I hate blood.

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@raindrop_herder Here's how the USGS feels about it: 🤣https://t.co/C0Ph4En43G

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@climate_badger You aren't alone in this battle. Long live Coplen 2011!

[Rebecca Doyle @lake_nerd]

On Wed, Dec 9th, from 2-3 pm, I am giving a public lecture prior to my thesis defence. This lecture is open to the public. If you are interested, DM me and I will send the Zoom link.

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@KimBaublys @USGS We've had great success with IAEA-SO-5 and IAEA-SO-6 for d18O-BaSO4 too!

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@KimBaublys @USGS Sometimes I wished we analyzed waters vis TC/EA just so I could use these...

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@And1129 That's so cool! Keep us posted!

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@And1129 I tried three different brands of AgCl, all of which had horrible blanks, before settling on 99.99% graphite powder as an additive. Beautiful peaks and reproducibility. People complain about it, but I love the TC/EA. Such a freaky little box.

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

Congratulations Cris!

[Cristopher Alvarez @csalvarezv]

I’m so excited to share I’ve successfully defended my MS thesis!! Thank you so much @Andrea_Erhardt! I’m incredibly grateful for all the support from an extraordinary research team and such an amazing advisor!

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@And1129 Nah, it was easy. A quick computer + Isodat reboot and we were back in action. Thankfully it wasn't a sample though.

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

"How many layers of chromatography are you on?"

"IDK, like 2 or 3?"

" You are like a little baby. Watch this."

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@And1129 I started using USGS64 glycine for carbon work where we expect values near or lower than -30 permil. Great standard, always very consistent.

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@WolfmannotJack @Andrea_Erhardt I'm assuming it was vegetable oil, although it could have been something else. They're a great client and we knew what we were getting into. I do love the LGR for the fact that I simply had to pull the injector block and clean it and we were back in action!

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@WolfmannotJack @Andrea_Erhardt This is great! I'll give it a shot if we encounter more samples like this!

[Kentucky Stable Isotope Geochemistry Lab (KSIGL) @KY_Isotopes]

@WolfmannotJack @Andrea_Erhardt Almost no separation of oil and water in the affected samples. I missed a few on the first session and ended up having to abort to clean an oily injector block. After that I tried vigorous centrifuging and then syringing with 0.45 and then 0.2 micron syringes. No luck...