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polyatomic ion
(redirected from polyatomic)

    Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.01 sec.
polyatomic ion [‚päl·ē·ə¦täm·ik ′ī·ən]
(chemistry)
An electrically charged species formed by covalent bonding of atoms of two or more different elements, usually nonmetals, for example, the ammonium ion (NH4+).
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Chinese anti-tumor drugs can be divided into nine categories: Alkylation Agents, such as nitrogen mustards, ethylene-imines, methanesulfonates, polyatomic alcohols and SarCNU; Anti-metabolite drugs, such as pyrimidine antimetabolites, purine antimetabolites and antifolates; Antibiotics; Plant anti-tumor drugs; Hormone anti-tumor drugs; Platinum metallic anti-tumor drugs; Others; Aided anti-tumor Drugs and immunomodulators.
Research Report on Chinese anti-Tumor Drug Market, 2009 by Kate Chen / Business community
[FIGURE 5 OMITTED] [FIGURE 6 OMITTED] This result is in accordance with literature data, which assess a minimum pyrrole/counter ion ratio of 3 for polyatomic anions as dopants [2].
Influence of processing parameters on the electric conductivity and ... by Pini, Niccolo; Siegrist, Mathias; Busato, Stephan; Ermanni, Paolo / Polymer Engineering and Science
As a result, the iron concentration in the otoliths of fish is also very low that makes the determination of iron problematic by ICP-MS due to interferences of otolith matrix and spectral overlaps of polyatomic ions on isotopes of iron.
Marine and atmospheric sciences by Journal of the Mississippi Academy of Sciences
 
 
 
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