Results 81 to 90 of about 36,532 (274)

COMPETITIVE ADSORPTION OF ARSENATE WITH PHOSPHATE, MOLYBDATE, SELENATE, AND SULFATE ON GOETHITE AND ZEROVALENT IRON (ZVI). [PDF]

Journal of Soil Sciences and Agricultural Engineering, 2008
A laboratory experiment, was carried out on synthetic goethite and zerovalent iron (ZVI) to study the competition between AsO43-(10µg As mL-1)and PO43-, SeO42-, SO42- and MoO42- at different ratios (1:0, 1:1, 1:2 and 2:1) on the adsorption surfaces of ...
S. H. El-Tohamy, A. A. Abd El-Haleem, M.H. El-Sayed   +2 more
doaj   +1 more source

Structural characterization and vibrational spectroscopy of the arsenate mineral wendwilsonite

, 2014
In this paper, we have investigated on the natural wendwilsonite mineral with the formulae Ca2(Mg,Co)(AsO4)2⋅2(H2O). Raman spectroscopy complimented with infrared spectroscopy has been used to determine the molecular structure of the wendwilsonite ...
Xi, Yunfei, Scholz, Ricardo, Frost, Ray Leslie, Belotti, Fernanda Maria, Cipriano, Ricardo Augusto Scholz, López, Andrés, Frost, Ray L.   +6 more
core   +1 more source

DESORPTION OF ARSENIC FROM SOIL, GOETHITE AND ZEROVALENT IRON USING SOME EXTRACTANTS UNDER DIFFERENT pH VALUES [PDF]

Fayoum Journal of Agricultural Research and Development, 2009
Arsenic is a toxic element that can occurs in the environment as a resultof either natural processes or anthropogenic activities. The accumulation ofarsenic in form of arsenate As(V) in soils and sediments threatens the health ofplants, wildlife and ...
Ali A. Abd El-Haleem, Sayed H. El-Tohamy, Mostafa H. El-Sayed   +2 more
doaj   +1 more source

The role of thymoquinone as a potent antioxidant in ameliorating the neurotoxic effect of sodium arsenate in female rat

, 2017
Arsenic is a neurotoxic substance that makes the brain susceptible to free radicals. Thymoquinone (TQ) is a potent antioxidant extracted from Nigella sativa seeds. It scavenges free radicals and prevents the cell damage resulted from oxidative substances.
R. Kassab, R. El-Hennamy
semanticscholar   +1 more source

Development of an eDNA‐Based Toxicity Test as a Screening Tool for Assessing Pollutant Impacts in Soil: A Case Study of Metal Toxicity in Allonychiurus kimi (Collembola)

Environmental DNA, Volume 8, Issue 3, May–June 2026.
This study aimed to develop a soil toxicity test protocol using species‐specific eDNA from Allonychiurus kimi (Collembola). The method showed sensitivity comparable to conventional reproduction tests for heavy metals. The consistent EC50 equivalent Ct‐value (29.91) highlights the potential of eDNA as a rapid and efficient ecotoxicological screening ...
Taewoo Kim, Yuchan Won, Minhyung Jung, Yongeun Kim, Yun‐Sik Lee, Kijong Cho   +5 more
wiley   +1 more source

Caracterização de uma arsenato redutase de Trypanosoma cruzi e inibição de uma fosfotirosina fosfatase de Yersinia enterocolitica por chalconas sintéticas [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biologicas, Programa de Pós-graduação em Bioquímica, Florianópolis, 2011Trypanosoma cruzi é o agente etiológico da doença de Chagas.
Martins, Priscila Graziela Alves
core  

Vibrational spectroscopic characterization of the arsenate mineral barahonaite: Implications for the molecular structure

, 2014
The mineral barahonaite is in all probability a member of the smolianinovite group. The mineral is an arsenate mineral formed as a secondary mineral in the oxidized zone of sulphide deposits. We have studied the barahonaite mineral using a combination of
Xi, Yunfei, Scholz, Ricardo, López, Andrés, Frost, Ray L.   +3 more
core   +1 more source

Microbial oxidation of arsenite in a subarctic environment: diversity of arsenite oxidase genes and identification of a psychrotolerant arsenite oxidiser [PDF]

, 2010
Background Arsenic is toxic to most living cells. The two soluble inorganic forms of arsenic are arsenite (+3) and arsenate (+5), with arsenite the more toxic.
Hudson-Edwards, KA, Osborne Thomas H, Osborne, T.H., Hudson-Edwards, Karen A., Walker, Stephen R., Osborne, Thomas H., Stephen R Walker, Hudson-Edwards Karen A, Joanne M Santini, Santini, JM, Ward, S.A., Jamieson, H.E., Thomas H Osborne, Nordstrom, DK, Nordstrom, K., Nordstrom, D. Kirk, Jamieson, HE, Walker, S.R., Santini, J.M., Ward, Seamus A., Ward Seamus A, Jamieson, Heather E., Osborne, TH, Osborne, Tom, Heather E Jamieson, Jamieson Heather E, Santini, Joanne M., Karen A Hudson-Edwards, Seamus A Ward, Walker Stephen R, Walker, SR, D Kirk Nordstrom, Nordstrom D Kirk, Santini Joanne M, Ward, SA   +34 more
core   +1 more source

Arsenic compounds in the leaves and roots of radish grown in three soils treated by dimethylarsinic acid

Plant, Soil and Environment, 2004
The effect of dimethylarsinic acid (DMA) on the growth of radish and the content of As compounds in roots and leaves of the radish were investigated. Radish was grown in pots in three soils (Fluvisols, Chernozems and Luvisols) amended with 20 mg As/kg of
P. Tlustoš, W. Gössler, J. Száková, D. Pavlíková, J. Balík   +4 more
doaj   +1 more source

Neutralization of arsenic pollutants, contained in natural waters: The theoretical analysis of solubility of some arsenates and optimization of the processes [PDF]

Journal of Water and Environmental Nanotechnology, 2017
Arsenic belongs to chemical elements, which are often found in natural waters and make it unsuitable for consumption without special treatment. Neutralization of arsenic pollutants of natural waters by converting them into insoluble form is one of the ...
Marta Litynska, Nataliia Tolstopalova, Igor Astrelin   +2 more
doaj   +1 more source