Re: soil water extractions

Yes, any water condensed in the vial should be included in the extraction of that sample. I learned from Ron Amundson ( and Hope Jahren by proxy) to wrap the glass sample vial in a Kim wipe or two, smash it with a hammer or whatever is handy, and then quickly stick the whole thing in the extraction vessel. 

Cheers,
Erik


> On Jun 14, 2021, at 9:00 PM, ISOGEOCHEM automatic digest system <[log in to unmask]> wrote:
> 
> There are 6 messages totaling 919 lines in this issue.
> 
> Topics of the day:
> 
>  1. air compressor suggestions (3)
>  2. issues regarding plant and soil water extraction
>  3. [External] [ISOGEOCHEM] air compressor suggestions
>  4. [EXT] Re: [ISOGEOCHEM] air compressor suggestions
> 
> ----------------------------------------------------------------------
> 
> Date:    Mon, 14 Jun 2021 11:42:50 -0400
> From:    Dana Biasatti <[log in to unmask]>
> Subject: air compressor suggestions
> 
> Hello all,
> We are needing to move from using building compressed air to an offline
> compressed air system. We have 3 mass spec set-ups: 1)GC Isolink, Conflo,
> Delta V Plus, 2)EA, TCEA, Conflo, Delta V Advantage, and 3)Gasbench,
> Precon, Delta V Advantage. Does anyone have recommendations on a system
> that could handle all listed instruments? Also, the quieter, the better.
> Thanks in advance!
> Best,
> Dana
> 
> -- 
> Dana Biasatti, PhD
> Stable Isotope Specialist
> Center for Environmental Science and Technology
> University of Notre Dame
> Notre Dame, IN
> 
> ------------------------------
> 
> Date:    Mon, 14 Jun 2021 12:02:22 -0500
> From:    Sun Xiangmin <[log in to unmask]>
> Subject: Re: issues regarding plant and soil water extraction
> 
> Hi, Vahideh:
> 
> Based on my limited experiences, 1-3 months would be fine for the plant and
> leaf samples in the refrigerator, as long as it is sealed tightly and kept
> cool.
> 
> I also saw ice accumulated inside some vials for my sample. I
> considered them as part of sample water evaporated/transpirated, and
> included these ice in the extraction line as you did.
> 
> Best,
> 
>> On Sun, Jun 13, 2021 at 5:55 PM Vahideh Faghihi <[log in to unmask]> wrote:
>> 
>> *Dear all, *
>> 
>> 
>> *We are working on water sources of the Haloxylon plant in an arid area
>> using stable isotopes. We have collected some samples (Xylem, leaf) and
>> soil samples and stored them in glass vials, capped tightly, sealed with
>> parafilm and stored in a refrigerator for water extraction. My question is
>> how long can we keep them safely in the refrigerator before water
>> extraction? *
>> 
>> 
>> 
>> *Also, we had this issue when collecting the samples: some moisture could
>> be seen on the interior wall surface of the vial after capping. Shall I
>> consider it as plant (soil) sample moisture and because of that the sample
>> vial, containing the sample and moisture, is placed inside the extraction
>> tube of our cryogenic distillation apparatus?*
>> 
>> 
>> *Any help would be greatly appreciated. Thank you. *
>> 
>> 
>> 
>> *Vahideh*
>> 
> 
> 
> -- 
> Xiangmin Sun
> http://xiangminsun.rbind.io/
> 
> ------------------------------
> 
> Date:    Mon, 14 Jun 2021 19:33:08 +0000
> From:    "Wolfram Meier-Augenstein (pals)" <[log in to unmask]>
> Subject: Re: [External] [ISOGEOCHEM] air compressor suggestions
> 
> 
> Hi Dana,
> 
> In any of the stable isotope labs I worked in or run we used JunAir compressors. They are quiet. They last "forever". They come in a variety of different tank sizes which means they only run when the tank pressure falls below the set pressure delivery-side.
> 
> www.jun-air.com
> 
> Have a look at the 12-25 model which is fitted with 6.6 gallon tank. Should you decide to go for one of these beauties, add a filter regulator to the shopping list.
> 
> Best,
> 
> Wolfram
> 
> 
> Sent from my BlackBerry 10 smartphone.
> From: Dana Biasatti
> Sent: Monday, 14 June 2021 18:23
> To: [log in to unmask]
> Reply To: Stable Isotope Geochemistry
> Subject: [External] [ISOGEOCHEM] air compressor suggestions
> 
> CAUTION: External sender. Do not click on links or attachments unless you expect them from the sender and know it's safe!
> If in doubt please contact the Helpdesk: [log in to unmask]                +44 (0) 1224 262777
> 
> Hello all,
> We are needing to move from using building compressed air to an offline compressed air system. We have 3 mass spec set-ups: 1)GC Isolink, Conflo, Delta V Plus, 2)EA, TCEA, Conflo, Delta V Advantage, and 3)Gasbench, Precon, Delta V Advantage. Does anyone have recommendations on a system that could handle all listed instruments? Also, the quieter, the better.
> Thanks in advance!
> Best,
> Dana
> 
> --
> Dana Biasatti, PhD
> Stable Isotope Specialist
> Center for Environmental Science and Technology
> University of Notre Dame
> Notre Dame, IN
> 
> [RGU logo. RGU - Scottish University of the Year - The Times Good University Guide 2021]<http://www.rgu.ac.uk>
> 
> Robert Gordon University, a Scottish charity registered under charity number SC 013781.
> 
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> 
> Thank you.
> 
> ------------------------------
> 
> Date:    Mon, 14 Jun 2021 18:13:40 +0000
> From:    "Harlow, Benjamin" <[log in to unmask]>
> Subject: Re: air compressor suggestions
> 
> Hi Dana,
> 
> I have an instrument setup similar to yours and have been happy with our Jun-Air 2xOF302-40B. It is very quiet, oil-less and rated for 100% duty cycle. They are common in dental offices, and have a very small footprint.
> 
> The only weak point has been the tank drain. It utilizes a dipper from the side of the tank. We welded a drain on the bottom of the tank.
> 
> Whichever model you get, I highly recommend getting an automatic tank drain. Our tank is set to drain for a few seconds on the hour.
> 
> Cheers, Ben
> From: Stable Isotope Geochemistry <[log in to unmask]> On Behalf Of Dana Biasatti
> Sent: Monday, June 14, 2021 8:43 AM
> To: [log in to unmask]
> Subject: [ISOGEOCHEM] air compressor suggestions
> 
> Hello all,
> We are needing to move from using building compressed air to an offline compressed air system. We have 3 mass spec set-ups: 1)GC Isolink, Conflo, Delta V Plus, 2)EA, TCEA, Conflo, Delta V Advantage, and 3)Gasbench, Precon, Delta V Advantage. Does anyone have recommendations on a system that could handle all listed instruments? Also, the quieter, the better.
> Thanks in advance!
> Best,
> Dana
> 
> --
> Dana Biasatti, PhD
> Stable Isotope Specialist
> Center for Environmental Science and Technology
> University of Notre Dame
> Notre Dame, IN
> 
> ------------------------------
> 
> Date:    Mon, 14 Jun 2021 19:40:46 +0000
> From:    Dennis Newell <[log in to unmask]>
> Subject: Re: [EXT] Re: [ISOGEOCHEM] air compressor suggestions
> 
> Hi Dana,
> 
> I echo adding an automatic tank drain. We have Jun-Air 6-25 for our Delta V + GB, EA, TCEA- works great - but we do not have the auto drain so manually draining the tank is a very important and regular maintenance item.
> 
> Dennis
> 
> Dennis L. Newell
> Associate Professor of Geology
> Department of Geosciences
> Utah State University
> 4505 Old Main Hill
> Logan, UT  84322
> 435-797-0479
> 
> 
> ________________________________
> From: Stable Isotope Geochemistry <[log in to unmask]> on behalf of Harlow, Benjamin <[log in to unmask]>
> Sent: Monday, June 14, 2021 11:13 AM
> To: [log in to unmask] <[log in to unmask]>
> Subject: [EXT] Re: [ISOGEOCHEM] air compressor suggestions
> 
> 
> Hi Dana,
> 
> 
> 
> I have an instrument setup similar to yours and have been happy with our Jun-Air 2xOF302-40B. It is very quiet, oil-less and rated for 100% duty cycle. They are common in dental offices, and have a very small footprint.
> 
> 
> 
> The only weak point has been the tank drain. It utilizes a dipper from the side of the tank. We welded a drain on the bottom of the tank.
> 
> 
> 
> Whichever model you get, I highly recommend getting an automatic tank drain. Our tank is set to drain for a few seconds on the hour.
> 
> 
> 
> Cheers, Ben
> 
> From: Stable Isotope Geochemistry <[log in to unmask]> On Behalf Of Dana Biasatti
> Sent: Monday, June 14, 2021 8:43 AM
> To: [log in to unmask]
> Subject: [ISOGEOCHEM] air compressor suggestions
> 
> 
> 
> Hello all,
> 
> We are needing to move from using building compressed air to an offline compressed air system. We have 3 mass spec set-ups: 1)GC Isolink, Conflo, Delta V Plus, 2)EA, TCEA, Conflo, Delta V Advantage, and 3)Gasbench, Precon, Delta V Advantage. Does anyone have recommendations on a system that could handle all listed instruments? Also, the quieter, the better.
> 
> Thanks in advance!
> 
> Best,
> 
> Dana
> 
> --
> 
> Dana Biasatti, PhD
> Stable Isotope Specialist
> Center for Environmental Science and Technology
> University of Notre Dame
> Notre Dame, IN
> 
> CAUTION: This email originated from outside of USU. If this appears to be a USU employee, beware of impersonators. Do not click links, reply, download images, or open attachments unless you verify the sender’s identity and know the content is safe.
> 
> ------------------------------
> 
> Date:    Mon, 14 Jun 2021 21:49:24 +0000
> From:    "Howe, Stephen S" <[log in to unmask]>
> Subject: Re: air compressor suggestions
> 
> Hi Dana!
> 
> I used Jun-Air compressors at the University of Vermont and Northwestern University and while they worked well, they had the unfortunate tendency to spray oil every time the build-up pressure cycle stopped when they reached the set delivery pressure, even though I was careful about regularly draining them manually.  When I got to the University at Albany, I decided I didn’t want to keep a tray underneath the compressor to catch the oil, so I opted for a compressor from the Panther series from Werther International.  Although their design resembles that of the Jun-Air compressors, it never sprayed oil like the Jun-Air compressors.  See
> 
> https://www.werther.com/silent-compressor-pumps.html
> 
> Steve
> 
> 
> On Jun 14, 2021, at 11:42 AM, Dana Biasatti <[log in to unmask]<mailto:[log in to unmask]>> wrote:
> 
> Hello all,
> We are needing to move from using building compressed air to an offline compressed air system. We have 3 mass spec set-ups: 1)GC Isolink, Conflo, Delta V Plus, 2)EA, TCEA, Conflo, Delta V Advantage, and 3)Gasbench, Precon, Delta V Advantage. Does anyone have recommendations on a system that could handle all listed instruments? Also, the quieter, the better.
> Thanks in advance!
> Best,
> Dana
> 
> --
> Dana Biasatti, PhD
> Stable Isotope Specialist
> Center for Environmental Science and Technology
> University of Notre Dame
> Notre Dame, IN
> ressure
> 
> ------------------------------
> 
> End of ISOGEOCHEM Digest - 13 Jun 2021 to 14 Jun 2021 (#2021-140)
> *****************************************************************