Results 1 to 10 of about 5,463,250 (252)

Monitoring and Evaluation of Terni (Central Italy) Air Quality through Spatially Resolved Analyses

Atmosphere, 2017
A study of spatial variability of PM10 elemental components was conducted in Terni city (Central Italy), situated in an intramountain depression characterized by the presence of several particulate matter emission sources.
Lorenzo Massimi, Martina Ristorini, Marta Eusebio, Darla Florendo, Adeola Adeyemo, Davide Brugnoli, Silvia Canepari   +6 more
doaj   +3 more sources

Oxidizable fractions of soil organic carbon in Caatinga forest submitted to different forest managements

Ciência Rural, 2018
: One of the main alternatives for the rational exploitation of the Caatinga biome’s natural resources is sustainable forest management. Soil organic carbon (SOC) and its fractions can be used to evaluate the conservation status of forest ecosystems ...
Suellen Gomes Monteiro Batista, Patrícia Anjos Bittencourt Barreto-Garcia, Alessandro de Paula, Divino Levi Miguel, Willyan Charles Amaral Batista   +4 more
doaj   +1 more source

Distribution of zinc and copper chemical forms and their relationship with some physico-chemical properties and clay minerals in some calcareous soils [PDF]

Iran Agricultural Research, 2019
Determination and recognition of relative distribution of chemical forms of each element and their relationship with physical, chemical and soil clay minerals can help researchers to manage soil fertility better.
Sirous Shakeri, Mahboub Saffari
doaj   +1 more source

Pollution characteristics and ecological risk assessment of heavy metals in the surface sediments from a source water reservoir

Chemical Speciation & Bioavailability, 2016
Surface sediment samples were collected from a source water reservoir in Zhejiang Province, East of China to investigate pollution characteristics and potential ecological risk of heavy metals.
Changming Yang, Yaqiong Wu, Fen Zhang, Lin Liu, Ruijie Pan   +4 more
doaj   +1 more source

The provenance of selected heavy metals in soils near power plant of Hamedan: A pedological approach

مجله آب و خاک, 2014
To determine the origin of heavy metals, the effects of parent materials, soil genesis, and human activities on the content and distribution of selected metals in soils near Mofateh Martyr powerhouse, Hamedan, were assessed.
Sh. Nosratipoor, M. Nael, M. Sheklabadi, A.A. Sepahi Garo   +3 more
doaj   +1 more source

Seasonal variations in the concentration and solubility of elements in atmospheric particulate matter: a case study in Northern Italy

E3S Web of Conferences, 2013
Atmospheric particulate matter is characterized by a variety of chemical components, generally produced by different sources. Chemical fractionation of elements, namely the determination of their extractable and residual fractions, may reliably increase ...
Canepari S., Astolfi M. L., Marcovecchio F., Maretto M., Perrino C.   +4 more
doaj   +1 more source

Chemical Fractionation of Trace Elements in Arctic PM₁₀ Samples

Atmosphere, 2021
In this study, the information potential of a two-step sequential extraction procedure was evaluated. For this purpose, first of all the elemental composition of Arctic PM10 samples collected in Ny-Ålesund (Svalbard Islands) from 28 February 2015 to 21 ...
Eleonora Conca, Mery Malandrino, Agnese Giacomino, Paolo Inaudi, Annapaola Giordano, Francisco Ardini, Rita Traversi, Ornella Abollino   +7 more
doaj   +1 more source

Influence of Cropping Regimes on the Availability and Existing Forms of Phosphorus in the Albic Luvisols in Northeast China

Agronomy
Adopting an optimal cropping regime is crucial for sustainable soil use. However, how different cropping regimes impact phosphorus (P) availability and the underlying mechanism remain unclear. Here, a 10-year field experiment was performed to examine the
Yidan Geng, Honghao Yu, Yuanhong Sun, Zhiyuan Cao, Siyu Li, Hang Liu, Cuilan Li, Jinjing Zhang   +7 more
doaj   +1 more source

Structure II gas hydrates found below the bottom‐simulating reflector

Geophysical Research Letters, 2016
Gas hydrates are a major component in the organic carbon cycle. Their stability is controlled by temperature, pressure, water chemistry, and gas composition.
M. Paganoni, J. A. Cartwright, M. Foschi, R. C. Shipp, P. Van Rensbergen   +4 more
doaj   +1 more source

Phosphorus concentrations in sediments from the equatorial Amazon estuary, Furo of Muriá, Pará State, Brazil

Acta Scientiarum: Technology, 2022
We characterized the spatial and seasonal distributions of different phosphorus fractions in surface sediments from the Furo of Muriá estuary by chemical fractionation.
Ana Carolina Santa Rosa de Sousa, Rosa Maria da Luz Mendes, Francianne Vieira Mourão, Maamar El Robrini, José Almir Rodrigues Pereira, Pedro Henrique Campos Sousa, Maria Lourdes de Souza Santos   +6 more
doaj   +1 more source