ammonium ion

(Chemistry) the ion NH4⁺, formed from ammonia and present in aqueous solutions of ammonia and in many salts

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Noun

ammonium ion - the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion

ammonium

ammonia - a pungent gas compounded of nitrogen and hydrogen (NH3)

Translations

ammonium ion

n → ione m ammonio inv

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References in periodicals archive

The pH is affected by the presence of ammonium ion or ammoniac (Randall and Tsui, 2002).

Determination of acute toxicity of ammonium in juvenile Patagonian blenny (Eleginops maclovinus)/Determinacao da toxicidade aguda do amonio em Babosas-da-Patagonia (Eleginops maclovinus) juvenis

The demonstrated sensitivity is 3.4%/m for ammonium ion (NH4+).

Components

(1993) the excessive absorption of the ammonium ion contributes to promote the electrochemical imbalance in the interior of the cells and of the intracellular pH, which stimulates the extrusion of ions to the apoplast.

Nitrate and ammonium proportions in sesame cultivation under irrigation with saline waters

However, in the presence of ammonia, the electrostatic attraction between free water and negative charged lattices of OH-groups decreases significantly, which produces a new ammonium ion. This excess proton can be delivered to a new unoccupied site or another N[H.sub.3] molecule [5].

A New Approach to Determine Gas Diffusion Coefficients in Porous Solids by EIS: Application for N[H.sub.3] and C[O.sub.2] Adsorption on Zirconia and Zeolite Type 5A

However, to our knowledge there are only 3 works devoted to investigate tetrakis [Eu.sup.3+] complexes with DBM ligands with general structure [Eu[(DBM).sub.4]] ([Eu.sup.3+] complex is anionic and charge neutralization is required by quaternary ammonium ion countercation) [6-8].

Study of thermal and optical properties of dibenzoylmethane Eu(III) organic complexes

According to CASTING (1998), the capacity to absorb ammonia by zeolites is mainly because of ammonium ion exchange (N[H.sub.4.sup.+]), which makes the use of the additive possible.

Zeolites in poultry and swine production/Zeolitas na producao de aves e suinos

The pH has an important effect on ammoniacal nitrogen removal since it can impact the character of ammonium ion. When the pH value is higher than 7, the adsorption capacities of ammoniacal nitrogen decrease, because the ammonium ion is transformed to nonionized forms of ammonia gas, which is unfavorable for adsorption on X/AC composite [36-38].

Adsorption Equilibrium and Kinetics of the Removal of Ammoniacal Nitrogen by Zeolite X/Activated Carbon Composite Synthesized from Elutrilithe

The experiment to reduce ammonium ion concentrations in the fugate was carried out by filtering it through zeolite filler.

REMOVAL OF AMMONIUM IONS FROM DIGESTED SLUDGE FUGATE BY USING NATURAL ZEOLITE

Nitrates show the spatial variation Sami as the ammonium ion. By contre nitrate levels fluctuate entre 1.46 and 7.69 mg/l, Ortho phosphates Meanwhile, show averages around 0 and 2.40 mg/l.

Impact of industrial waste on the quality of ground water in the M'Zab valley. And Evaluation of the salinity of the ground water used for irrigation in the region of El Atteuf, South Algerian

Mixture of 1,10-phenanthroline-5,6-dione 2 (0.212g,1mmol), 4,4-biphenyldicorboxyl adehyde 3 (0.210g, 1mmol) and (1g,15mmol) of ammonium ion were taken in a 50 mL round bottom flask, 5mL of glacial acetic acid was added as solvent and refluxed for 3 h.

Synthesis of Novel Rhodium Complex of Biphenylic-Imidazole-Phenanthroline and Photophysical Analysis of Metal Ions Selectively for Pb2+

The low urinary sodium owing to severe diarrhea allows for the coupling of urate with the abundant ammonium ion. This coupling, combined with at least a transient state of ammonium urate supersaturation, promotes the formation of AAU stones [9].

Postrenal Failure due to Urinary Stones Associated with Acute Viral Gastroenteritis: Three Case Reports