Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Tim F. Rozan"'
Publikováno v:
Environmental Science & Technology. 37:3845-3852
Pseudovoltammetry was used to evaluate the actual Pb complexation occurring in natural water samples of varying oxygen and sulfide concentration. In pseudovoltammetry, the potential at which metal-ligand complexes are broken up to form the metal amal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bb956ca05298bad3c06014039f5e9a23
https://doi.org/10.1021/es034014r
https://doi.org/10.1021/es034014r
Publikováno v:
Estuaries. 25:1088-1096
Solid and colloidal iron oxides are commonly involved in early diagenesis. More readily available soluble Fe(III) should accelerate the cycling of iron (Fe) and sulfur (S) in sediments. Experiments with synthetic solutions (Taillefert et al. 2000) sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54aadcbd99db6d6b9a1b0bb93910e7fd
https://doi.org/10.1007/bf02692206
https://doi.org/10.1007/bf02692206
Autor:
Shufen Ma, Tim F. Rozan, Brian T. Glazer, Robert E. Trouwborst, Martial Taillefert, Lexia M. Valdes, Julian Herszage, George W. Luther, Kent S. Price
Publikováno v:
Limnology and Oceanography. 47:1346-1354
We conducted a study to determine the seasonal relationship between iron, sulfur, and phosphorus in the upper sediments and pore waters of a shallow intercoastal bay. From April 1999 to September 2000, sediment cores were collected from Rehoboth Bay,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a836466a8c891928028930bd296fef7d
https://doi.org/10.4319/lo.2002.47.5.1346
https://doi.org/10.4319/lo.2002.47.5.1346
Autor:
George W. Luther, Tim F. Rozan
Publikováno v:
Marine Chemistry. 77:1-6
An anion chromatography with ultraviolet detection (IC/UV) method was developed to simultaneously measure NO 3 − , NO 2 − , and HS − concentrations in saline (pore)waters. This method achieves nanomolar detection limits without the need for a C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8251685cd045d9e1736c3db70946b63
https://doi.org/10.1016/s0304-4203(01)00070-6
https://doi.org/10.1016/s0304-4203(01)00070-6
Autor:
Donald B. Nuzzio, Martial Taillefert, Carol A. Di Meo, Richard A. Lutz, Tim F. Rozan, George W. Luther, S. Craig Cary, Timothy M. Shank
Publikováno v:
Nature. 410:813-816
The physiology and biochemistry of many taxa inhabiting deep-sea hydrothermal vents have been elucidated; however, the physicochemical factors controlling the distribution of these organisms at a given vent site remain an enigma after 20 years of res
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5389fc31afa0c959dca456142101aad5
https://doi.org/10.1038/35071069
https://doi.org/10.1038/35071069
Autor:
Gaboury Benoit, Tim F. Rozan
Publikováno v:
Journal of Paleolimnology. 25:455-465
210Pb has been used for more than two decades to provide the geochronology of annually deposited sediments and to construct pollution histories. Evidence from some lakes suggests that this radionuclide may be adequately mobile to compromise dating re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::caabd6f88f251314267a1f162754b941
https://doi.org/10.1023/a:1011179318352
https://doi.org/10.1023/a:1011179318352
Publikováno v:
Analytica Chimica Acta. 415:175-184
Free polysulfides (S42−), elemental sulfur (S0) and bisulfide (HS−) can be separated at discrete peak potentials using either cyclic voltammetry (CV) or linear sweep voltammetry (LS) with extremely fast scan rates. A scan rate of 1000 mV/s was fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::297d543678ffe62ec7a1490aa84d1dec
https://doi.org/10.1016/s0003-2670(00)00844-8
https://doi.org/10.1016/s0003-2670(00)00844-8
Autor:
Tim F. Rozan, Gaboury Benoit
Publikováno v:
Geochimica et Cosmochimica Acta. 63:3311-3319
Copper speciation was determined monthly at seven sites on four rivers in southern New England to understand which geochemical factors control free metal ion concentrations in river water. Samples were conventionally filtered (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbb224df3afeb9904c4dd1f089733afa
https://doi.org/10.1016/s0016-7037(99)00253-7
https://doi.org/10.1016/s0016-7037(99)00253-7
Publikováno v:
Environmental Science & Technology. 33:1766-1770
Complexation by dissolved humic substances has an important influence on trace metal behavior in natural systems. Unfortunately, few analytical techniques are available with adequate sensitivity and selectivity to measure free metal ions reliably at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94fc0a89e1d51f93f05964bcfca06ef8
https://doi.org/10.1021/es9810944
https://doi.org/10.1021/es9810944
Autor:
Tim F. Rozan, Gaboury Benoit
Publikováno v:
Geochimica et Cosmochimica Acta. 63:113-127
The particle concentration effect (p.c.e.) is an unexpected decline in partition coefficients (Kd) as suspended particulate matter (SPM) increases. This anomaly has been attributed to a variety of causes, but most often to the existence of colloidal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a31c27d54608671fc87a19c1d74b38d
https://doi.org/10.1016/s0016-7037(98)00276-2
https://doi.org/10.1016/s0016-7037(98)00276-2