Arsenic speciation and distribution in an arsenic hyperaccumulating plant

... phytoremediation of arsenic- contaminated soils. Speciation and distribution of arsenic in the plant can provide important information helpful to understanding the mechanisms for arsenic accumulation, translocation, ... occur in the Brake fern in any significant quantity. Research on heavy metal hyperaccumulating plants indicates that some organic and amino acids (histi...

Ngày tải lên: 15/03/2014, 23:49

... determined following the meth- ods of Karathanasis and Hajek (1982) and Karathanasis and Harris (1994). Samples were pretreated to remove salts, carbonates, OM and Fe oxides, and the fine clay-sized ... toxicity and mobility of As in soil–water plant systems are largely determined by its speciation and distri- bution, or partitioning between the solution and soil matrix....

Ngày tải lên: 15/03/2014, 23:49

... phosphatis’ and Candidatus ‘Competibacter phosphatis’ was examined by MAR-FISH, and the results are shown in Figs. 5 and 6. Lower initial pH conditions increased anaerobic acetate uptake by Candidatus ... 7 and 8 after the incubation, which originally ranged between 6 and 8 or 9. The effect of pH on the anaerobic uptake of radio-labeled acetate by Candidatus ‘Accumulibact...

Ngày tải lên: 05/09/2013, 09:38

... Discipline and training have given him some veneer of generalised similarities. Beneath these, Tommy Atkins is simply the man in the street any man in any street; and if you look out of your window ... jollifications, indoors in winter and in the open air in summer, infinite in variety and guaranteed never once to fall flat. A curious Empire reputation, this of Mr. William...

Ngày tải lên: 17/02/2014, 22:20

... these are the two traits mainstream Freudian and Lacanian psychoanalysis has largely abandoned. 9 The processes of struc- turing and interpellating the mass-psyche in this period are performed ... frame, for instance, makes it untouchable, utopian, and transcendental, and it is usually housed in special institutions—such as churches, cathedrals, and museums. Such religiosity...

Ngày tải lên: 07/03/2014, 10:10

... chicks, medicine, feed and veterinary services. Growers supply land, buildings, labor, and other variable inputs such as electricity and disinfectants. Using the information on input sharing, Table ... industry engaged in breeding of chicks and manufacturing of feed, vaccines and medicines. In order to minimize the risks to the producers and sustain the profitability of the...

Ngày tải lên: 17/03/2014, 10:20

... the low-index surfaces of nanocrystals and in facilitating the formation of nanocubes and nanorods. While the secondary growth of small particles in an Y. Wang, H. Yang / Chemical Engineering Journal ... nanoparticles always settled out from the IL mixtures and grew continuously. Fourier transform infrared and proton NMR were used to exam- ine [BMIM][Tf 2 N] and its mixtures w...

Ngày tải lên: 20/03/2014, 13:08

... accounting and financial reporting policies and compliance with applicable legal and regulatory standards. 13. At the same time, as discussed in paragraphs 8 and 9 of the Standard on Internal Audit ... requirements.  Instituting and operating appropriate systems of internal control.  Developing, publicising and following a code of conduct. Ensuring employees are properly train...

Ngày tải lên: 23/03/2014, 02:20

... the inorganic forms, and organoarsenicals, arsenobetaine and arsenocholine are generally considered to be non-toxic [2]. Arsenic may enter the environment as inorganic arsenic from pesticides and fertilizers ... production of alloys and glass [3]. The presence of arsenic in fish, shellfish and crustaceans has been known for many years [4]. Inorganic arsenic can be methylated...

Ngày tải lên: 15/03/2014, 23:49