Springer Science and Business Media LLC
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
A comparison of aggregation behavior in aqueous humic acids
Springer Science and Business Media LLC - Tập 2 - Trang 1-5 - 2001
The ability of six humic acids (HAs) to form pseudomicellar structures in
aqueous solution was evaluated by five techniques: size exclusion
chromatography; pyrene fluorescence enhancement; the pyrene I1/I3 ratio; the
cloud point of dilute HA solutions; and the fluorescence anisotropy of HAs. Soil
HAs were found to aggregate most easily, both on microscopic and macroscopic
scales. The formation of ...
Influence of soil minerals on chromium(VI) reduction by sulfide under anoxic conditions
Springer Science and Business Media LLC - Tập 8 - Trang 1-10 - 2007
The effects of soil minerals on chromate (CrVIO42-, noted as Cr(VI)) reduction
by sulfide were investigated in the pH range of 7.67 to 9.07 under the anoxic
condition. The examined minerals included montmorillonite (Swy-2), illite
(IMt-2), kaolinite (KGa-2), aluminum oxide (γ-Al2O3), titanium oxide (TiO2,
P-25, primarily anatase), and silica (SiO2). Based on their effects on Cr(VI)
reduction, thes...
A geochemical view into continental palaeotemperatures of the end-Permian using oxygen and hydrogen isotope composition of secondary silica in chert rubble breccia: Kaibab Formation, Grand Canyon (USA)
Springer Science and Business Media LLC - Tập 19 Số 1 - Trang 1-10 - 2018
The upper carbonate member of the Kaibab Formation in northern Arizona (USA) was
subaerially exposed during the end Permian and contains fractured and zoned
chert rubble lag deposits typical of karst topography. The karst chert rubble
has secondary (authigenic) silica precipitates suitable for estimating
continental weathering temperatures during the end Permian karst event. New
oxygen and hydroge...
The nature and fate of natural resins in the geosphere. XII. Investigation of C-ring aromatic diterpenoids in Raritan amber by pyrolysis-GC-matrix isolation FTIR-MS
Springer Science and Business Media LLC - Tập 7 - Trang 1-9 - 2006
Upper Cretaceous amber from the Raritan Formation (Sayerville, New Jersey) has
been investigated by Pyrolysis-GC-MS and Pyrolysis-GC-matrix isolation FTIR-MS.
Results establish the existence of two distinct forms of amber in this deposit.
Both forms are Class Ib ambers, but they are unambiguously differentiated on the
basis of their (intact) diterpenoid composition. The presence of callitrisate in...
Absorption mechanisms of Cu2+ on a biogenic bixbyite-like Mn2O3 produced by Bacillus CUA isolated from soil
Springer Science and Business Media LLC - Tập 16 - Trang 1-9 - 2015
Although most reported biogenic Mn oxides are hexagonal birnessites, other types
of biogenic Mn oxides also commonly occur in the environment. However, sorption
characteristics and underlying mechanisms of the adsorption of heavy-metal ions
on these biogenic Mn oxides are still rarely addressed. In this study, the
sorption mechanisms of Cu(II) on a low valence biogenic Mn oxide, poorly
crystallize...
13C/12C composition, a novel parameter to study the downward migration of paper sludge in soils†
Springer Science and Business Media LLC - Tập 3 - Trang 1-3 - 2002
δ13C values of crop and forest soils were measured 8 years after disposal of
paper sewage sludge. The carbon transfer from paper sludge downward to the first
humic layer is evidenced by a 13C-enrichnient of up to + 5.6‰ due to the input
of 13C-enriched sludge carbonates. 13C/12C composition is thus a novel,
sensitive parameter to follow the downward transfer of paper sludge carbon.
Intermobility of barium, strontium, and lead in chloride and sulfate leach solutions
Springer Science and Business Media LLC - Tập 20 - Trang 1-23 - 2019
Production of radionuclide-free copper concentrates is dependent on
understanding and controlling the deportment of daughter radionuclides (RNs)
produced from 238U decay, specifically 226Ra, 210Pb, and 210Po. Sulfuric acid
leaching is currently employed in the Olympic Dam processing plant (South
Australia) to remove U and fluorine from copper concentrates prior to smelting
but does not adequately ...
Molecular mechanics and quantum mechanical modeling of hexane soot structure and interactions with pyrene
Springer Science and Business Media LLC - Tập 1 Số 1 - 2000
Rare earth element geochemistry of outcrop and core samples from the Marcellus Shale
Springer Science and Business Media LLC - Tập 16 - Trang 1-11 - 2015
In this work, the geochemistry of the rare earth elements (REE) was studied in
eleven outcrop samples and six, depth-interval samples of a core from the
Marcellus Shale. The REE are classically applied analytes for investigating
depositional environments and inferring geochemical processes, making them of
interest as potential, naturally occurring indicators of fluid sources as well
as indicators ...
Chemical speciation and fate of tripolyphosphate after application to a calcareous soil
Springer Science and Business Media LLC - Tập 19 - Trang 1-11 - 2018
Adsorption and precipitation reactions often dictate the availability of
phosphorus in soil environments. Tripolyphosphate (TPP) is considered a form of
slow release P fertilizer in P limited soils, however, investigations of the
chemical fate of TPP in soils are limited. It has been proposed that TPP rapidly
hydrolyzes in the soil solution before adsorbing or precipitating with soil
surfaces, but...
Tổng số: 144
- 1
- 2
- 3
- 4
- 5
- 6
- 10