Hi All,
If there’s interest in Hg, it’ll have to be analyzed elsewhere. We don’t have capabilities to measure low Hg here in Durham. Same for Pb.
Jeff
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From: Rustad, Lindsey -FS
Sent: Monday, February 20, 2017 2:14 PM
To: Bailey, Scott -FS <swbailey@fs.fed.us>
Cc: Peter Groffman <groffmanp@caryinstitute.org>; Pardo, Linda -FS <lpardo@fs.fed.us>; Merriam, Jeffrey L -FS <jlmerriam@fs.fed.us>; hubbardbrookcos@lists.sr.unh.edu; linda.h.pardo@gmail.com
Subject: Re: [HubbardBrookCOS] Long-term foliar chemistry--which elements are key?
Hi all,
It would be good to talk to rich Halley about foliage digests for some of these metals. My experience from many years ago in my PHD work was that it was possible to measure Al in foliage, but I had to gently rinse the leaves in distilled
water to remove any dust contamination and check the data. That of course comprises K and Na.
If we are rerunning some of these anyway, it would be good to get as many relevant elements as possible, but with a robust prior discussion on how the samples were collected, handled, and processed.
Given potential deregulation of Hg, i especially think we should try to include this, for archived samples, or going forward. the past forward, if possible.
My two cents,
Lindsey
Sent from my iPhone
On Feb 20, 2017, at 10:26 AM, Bailey, Scott -FS <swbailey@fs.fed.us> wrote:
A number of the elements listed by Peter and Linda are much more prevalent in the sample processing environment than they are in foliage. Pb, Hg, Al, Fe, Zn, Cu are probably among these. These will require different protocols than what has been used for foliar monitoring in the past. I am not sure what the purpose is of this proposal. If it is just general environmental monitoring, it may be easier and give more information to monitor some of these elements in soil rather than foliage. Rich Hallett has done a lot of work to refine procedures for measuring Al in foliage and would be a good resource for that element. He found several sources of Al contamination in the lab that were swamping out Al in foliar digests.
- Scott
From: HubbardBrookCOS [mailto:hubbardbrookcos-bounces@lists.sr.unh.edu] On Behalf Of Peter Groffman
Sent: Sunday, February 19, 2017 9:16 AM
To: Pardo, Linda -FS <lpardo@fs.fed.us>
Cc: Merriam, Jeffrey L -FS <jlmerriam@fs.fed.us>; hubbardbrookcos@lists.sr.unh.edu; linda.h.pardo@gmail.com
Subject: Re: [HubbardBrookCOS] Long-term foliar chemistry--which elements are key?
I don't think it is essential, but lead and mercury have great societal interest and the long-term record at Hubbard Brook is an excellent tracer of efforts to control atmospheric pollution.
----------------------------------------------------------------------------------------
Peter M. Groffman
Senior Research Fellow
Cary Institute of Ecosystem Studies
2801 Sharon Turnpike
Millbrook, NY 12545
Email: groffmanp@caryinstitute.org
Phone (office): 845-677-7600. ext. 128
Phone (cell): 845-797-4832
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On Sat, Feb 18, 2017 at 6:35 PM, Pardo, Linda -FS <lpardo@fs.fed.us> wrote:
Dear Associates:
As we work on compiling the long-term foliar chemistry record, we will need to fill in gaps of parameters that were not measured by analyzing (or re-analyzing samples). I am writing to you to get your feedback on what elements you consider essential or most important for the long-term dataset.
Below are the ones that have most frequently been measured. We will certainly include the bolded analyses. Please weigh in if you have elements in addition to the bolded ones things that you would like to have data for.
Thanks,
Linda
– C, N, K, P, Ca, Mg, Mn,
– 15N, 13C
– Al, Fe, Zn
– Na, Si, Ti, Cu, Sr, Ba, Rb
– Others?
<image001.png>
Linda H. Pardo, PhD
Environmental EngineerForest Service
Northern Research Station
81 Carrigan Dr., UVM Aiken Center, Room 204C
Burlington, VT 05405
www.fs.fed.us
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