E-viri
Recenzirano
Odprti dostop
-
D’Andrilli, Juliana; Foreman, Christine M.; Marshall, Alan G.; McKnight, Diane M.
Organic geochemistry, 12/2013, Letnik: 65Journal Article
•IHSS Pony Lake and Suwannee River fulvic acid DOM reference samples compared.•Molecular constituents assigned and characterized using FT-ICR MS.•Complementary data obtained from fluorescence spectroscopy.•Proteinaceous signatures of Pony Lake DOM assigned from both analytical methods.•More reactive/microbial character for Pony Lake DOM than for Suwannee River DOM. We present the extensive characterization of Antarctic Pony Lake (PL) dissolved organic matter (DOM), an International Humic Substance Society (IHSS) fulvic acid (FA) reference standard, using electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) and excitation–emission matrix fluorescence spectroscopy (EEMS). PLFA is the first reference standard available through IHSS derived solely from a microbial source. A number of factors differentiate PLFA from other IHSS standards, including source material, geographic location, sunlight exposure, freeze–thaw conditions, and other in situ environmental influences. ESI FT-ICR MS and EEMS were used to compare the PLFA microbial DOM compositional signature with the IHSS Suwannee River (SR) FA, a standard frequently studied for environmental DOM analysis. Although CcHhOoNnSs (n=0, 1, or 2 and s=0 or 1) constituents were present in both IHSS samples, PLFA contained more N and S molecular species, whereas SRFA was dominated by CcHhOo compounds. Proteinaceous character was detected with both methods, in greater abundance for PLFA, which we attributed to its microbial source material and labile, potentially more reactive nature than SRFA. Characterization from both analytical techniques resulted in complementary data that reinforce the importance of PLFA as an IHSS reference standard that should be utilized for other microbiological environmental DOM comparisons.
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Vnos na polico
Trajna povezava
- URL:
Faktor vpliva
Dostop do baze podatkov JCR je dovoljen samo uporabnikom iz Slovenije. Vaš trenutni IP-naslov ni na seznamu dovoljenih za dostop, zato je potrebna avtentikacija z ustreznim računom AAI.
Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
---|
Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
---|
Vir: Osebne bibliografije
in: SICRIS
To gradivo vam je dostopno v celotnem besedilu. Če kljub temu želite naročiti gradivo, kliknite gumb Nadaljuj.