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Journal articles on the topic 'Nitrate anion'

Author: Grafiati

Published: 5 June 2025

Last updated: 16 July 2025

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1

Florin, T. H. J., G. Neale, and J. H. Cummings. "The effect of dietary nitrate on nitrate and nitrite excretion in man." British Journal of Nutrition 64, no. 2 (1990): 387–97. http://dx.doi.org/10.1079/bjn19900040.

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Dietary nitrate and nitrite may affect colonic pathophysiology. These anions influence fermentation, and nitrite has been shown to augment sodium absorption by the colon and participate in the formation ofN-nitroso compounds. There is, however, no general agreement as to how much dietary nitrate and nitrite reaches the colon. To help resolve this question, balance studies were performed on six healthy ileostomy subjects who were given diets that varied in nitrate content from 0.83 to 5.20 mmol/d. Nitrate and nitrite excretion in ileal effluent and urine were measured by anion-exchange chromato

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2

Zakharov, Valery N., Pavel S. Lemport, Vladimir V. Chernyshev, et al. "A Promising 1,3,5-Triazine-Based Anion Exchanger for Perrhenate Binding: Crystal Structures of Its Chloride, Nitrate and Perrhenate Salts." Molecules 28, no. 4 (2023): 1941. http://dx.doi.org/10.3390/molecules28041941.

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The reaction of pyridine with cyanuric chloride was studied under microwave activation as well as in the presence of silver nitrate. The product of hydrolysis containing two pyridinium rings and chloride anion was isolated. The structures of these anion exchanger salts with chloride, nitrate and perrhenate anions are discussed.

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3

Weil, Matthias, Owen P. Missen, and Stuart J. Mills. "Dimorphism of [Bi₂O₂(OH)](NO₃) – the ordered Pna2₁ structure at 100 K." Acta Crystallographica Section E Crystallographic Communications 79, no. 12 (2023): 1223–27. http://dx.doi.org/10.1107/s205698902301023x.

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The re-investigation of [Bi2O2(OH)](NO3), dioxidodibismuth(III) hydroxide nitrate, on the basis of single-crystal X-ray diffraction data revealed an apparent structural phase transition of a crystal structure determined previously (space group Cmc21 at 173 K) to a crystal structure with lower symmetry (space group Pna21 at 100 K). The Cmc21 → Pna21 group–subgroup relationship between the two crystal structures is klassengleiche with index 2. In contrast to the crystal structure in Cmc21 with orientational disorder of the nitrate anion, disorder does not occur in the Pna21 structure. Apart from

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4

Kim, Hee-Joon. "Assembly of Sn(IV)-Porphyrin Cation Exhibiting Supramolecular Interactions of Anion···Anion and Anion···π Systems". Molbank 2022, № 4 (2022): M1454. http://dx.doi.org/10.3390/m1454.

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Trans-diaqua[meso-tetrakis(4-pyridyl)porphyrinato]Sn(IV) dinitrate complexes were assembled in a two-dimensional manner via hydrogen bonding between aqua ligands and pyridyl substituents. Interestingly, this supramolecular assembly was accompanied by unconventional noncovalent interactions, such as anion···anion and anion···π interactions, which were confirmed by X-ray crystallographic analysis. Two nitrate anions close to 2.070 Å were constrained in a confined space surrounded by four hydrogen-bonded Sn(IV)-porphyrin cations. The nitrate anion was also 3.433 Å away from the adjacent pyrrole r

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5

McMullen, Sarah E., John A. Casanova, Lois K. Gross, and Frank J. Schenck. "Ion Chromatographic Determination of Nitrate and Nitrite in Vegetable and Fruit Baby Foods." Journal of AOAC INTERNATIONAL 88, no. 6 (2005): 1793–96. http://dx.doi.org/10.1093/jaoac/88.6.1793.

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Abstract An ion chromatographic method was developed for the determination of nitrate and nitrite in vegetable and fruit baby foods. The introduction of nitrate or nitrite to food may be natural or artificial as a preservative. Because of the higher pH found in babies' stomachs, nitrate can act as a reservoir for the production of nitrite by nitrate-reducing bacteria that can be harbored in the intestinal tract. This problem does not exist in adults because of the lower pH of the adult stomach. Exposure to nitrite by infants can result in methemoglobinemia (blue baby syndrome). There are also

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6

Aftab, J., Z. Kalaycıoğlu, S. Kolaylı, and F. B. Erim. "Sample stacking – Capillary electrophoretic determination of nitrate and nitrite contents as nitric oxide metabolites in honey varieties originated from Anatolia." Acta Alimentaria 50, no. 4 (2021): 574–82. http://dx.doi.org/10.1556/066.2021.00125.

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Abstract Nitrate and nitrite ions taken from food are the sources of bioavailable nitric oxide (NO) in the nitrogen cycle. Some beneficial effects of honey on health are attributed to the ability of honey to increase NO production. The variation of nitrate and nitrite levels of honey samples collected from different Anatolia regions were clarified using capillary electrophoresis technique. The sensitivities of both anions were improved with the application of the sample stacking method. Separation buffer consisted of 30 mmol L−1 formic acid and 30 mmol L−1 sodium sulfate at a pH of 4.0. The CE

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7

Kolisnyk, I. L. "INTENSITY OF NITRIC OXIDE SYNTHESIS IN THE BLOOD OF RATS UNDER THE INFLUENCE OF SODIUM FLUORIDE." Medical and Ecological Problems 24, no. 5-6 (2020): 25–28. http://dx.doi.org/10.31718/mep.2020.24.5-6.07.

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The influence of fluoride ion as a chemical agent affects the metabolism, the change of which is manifested in functional and structural changes. The final stable metabolites of NO include nitrite and nitrate anions (NO2, NO3), the concentration of which serves as an indirect method for estimating the intensity of NO synthesis. The concentration of NO is a major factor in its numerical biological effects (regulatory, protective). At low NO concentrations, direct effects aimed at maintaining homeostasis, such as the vascular, respiratory, and nervous systems, predominate; at high concentrations

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8

Diop, Tidiane, Libasse Diop, Monika Kučeráková, and Michal Dušek. "Acetonyltriphenylphosphonium nitrate." Acta Crystallographica Section E Structure Reports Online 69, no. 2 (2013): o303. http://dx.doi.org/10.1107/s1600536813002110.

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Crystals of the title salt, C21H20OP+·NO3−, are composed of acetonyltriphenylphosphonium cations and nitrate anions that mainly interact through electrostatic forces. The P atom in the cation has a slightly distorted tetrahedral environment, with C—P—C angles ranging from 104.79 (7) to 112.59 (6)°. The sum of O—N—O angles of the nitrate anion is 359.99°, reflecting its trigonal–planar character. C—H...O hydrogen bonds help to consolidate the crystal packing.

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9

Lejarazu-Larrañaga, Amaia, Juan Manuel Ortiz, Serena Molina, Yan Zhao, and Eloy García-Calvo. "Nitrate-Selective Anion Exchange Membranes Prepared using Discarded Reverse Osmosis Membranes as Support." Membranes 10, no. 12 (2020): 377. http://dx.doi.org/10.3390/membranes10120377.

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The present work shows a methodology for the preparation of membranes with a high affinity for nitrates. For this purpose, a polymeric mixture containing an anion exchange resin was extended on a recycled pressure filtration membrane used as mechanical support. Different ion exchange resins were tested. The influence in ion fractionation of (i) the type of ion exchange resin, (ii) the use of a recycled membrane as support and (iii) the operating current density during the separation process were studied. Results revealed that the employed anion exchange resin could tune up the transport number

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10

Mathivathanan, Logesh, Raquel Cruz та Raphael G. Raptis. "A [Cu3(μ3-O)]–pyrazolate metallacycle with terminal nitrate ligands exhibiting point group symmetry 3". Acta Crystallographica Section E Crystallographic Communications 72, № 4 (2016): 492–94. http://dx.doi.org/10.1107/s2056989016003741.

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The trinuclear triangular cuprate anion of the title compound, tris[bis(triphenylphosphoranylidene)ammonium] tris(μ2-4-chloropyrazolato-κ2N:N′)-μ3-oxido-tris[(nitrato-κ2O,O′)cuprate(II)] nitrate monohydrate, (C36H30P2N)[Cu3(C3H2ClN2)3(NO3)3O]NO3·H2O, has point group symmetry 3., with the μ3-O atom located on the threefold rotation axis. The distorted square-pyramidal coordination sphere of the CuIIatom is completed by two N atoms oftrans-bridging pyrazolate groups and a chelating nitrate anion. The complex anion is slightly bent, with the nitrate and pyrazolate groups occupying positions above

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11

Chundak, S. Yu, L. Yu Lukachinec та M. Daszkiewicz. "Aqua(nitrato-κ2 O,O′)bis(4-nitrobenzohydrazide-κ2 N 2,O)cadmium(II) nitrate". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2815—m2816. http://dx.doi.org/10.1107/s1600536807051914.

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In the title compound, [Cd(NO3)(C7H7N3O3)2(H2O)]NO3, the Cd atom is coordinated by two organic ligands, a water molecule and a nitrate anion. The coordination can be described as distorted pentagonal bipyramidal. Geometric parameters show that the nitrate anion is coordinated in the bidentate mode. Non-coordinated and bidentate chelating nitrates create hydrogen-bonding networks in the a- and b-axis directions, respectively. Parallel-oriented 4-nitrobenzohydrazides help to establish the packing.

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12

Moriyoshi, Chikako, Hirokazu Hoashi, Hiroaki Sato, et al. "Structure and Anion Exchangeability of Ni-Al-Type Layered Double Hydroxides." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C915. http://dx.doi.org/10.1107/s2053273314090846.

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Layered double hydroxide (LDH) is one of promising inorganic materials for cleaning the environmental water polluted by toxic anions. The crystal structure of LDH is composed of the positively-charged metal hydroxide nanosheets and the anions with water molecules intercalated between the nanosheet layers. To put LDHs for practical use, it is necessary to understand why only special anions can be intercalated into the crystal structure from the aqueous solution. In this study, the anion exchange experiments and the synchrotron radiation x-ray powder diffraction measurements of Ni-Al-type LDHs o

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13

Chattopadhyay, Taraknath, Anju B. S., Shourya Gupta, Ananya S., Jeffery A. Bertke, and Subrata Kundu. "NOx− anion recognition by bimetallic cryptates: selectivity for nitrite over nitrate." Dalton Transactions 48, no. 21 (2019): 7085–89. http://dx.doi.org/10.1039/c8dt04971h.

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14

Koplitz, Lynn V., Joel T. Mague, Michael N. Kammer, Cameron A. McCormick, Heather E. Renfro, and David J. Vumbaco. "2-Cyano-1-methylpyridinium nitrate." Acta Crystallographica Section E Structure Reports Online 68, no. 6 (2012): o1653. http://dx.doi.org/10.1107/s1600536812019460.

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In the title compound, C7H7N2 +·NO3 −, all atoms except the methyl H atoms lie on a crystallographic mirror plane. The interlayer distance, including that between aligned N atoms from alternating cations and anions in adjacent layers, is exceptionally short at 3.055 (1) Å. Two-dimensional C—H...O hydrogen-bonded networks link cations to anions, while C—H...N interactions link cations within each layer. Anion–π interactions with the cations assist in binding the layers together.

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15

Aliev, Amil R., Isa R. Akhmedov, Murad G. Kakagasanov, Zakir A. Aliev, and Akhmed M. Amirov. "MOLECULAR RELAXATION IN BINARY SYSTEMS NaNO3 – NaNO2, KNO3 – KNO2." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 61, no. 7 (2018): 23. http://dx.doi.org/10.6060/ivkkt.20186107.5660.

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In the present study, the molecular relaxation processes in crystalline sodium nitrate NaNO3, crystalline sodium nitrite NaNO2, crystalline potassium nitrate KNO3, crystalline potassium nitrite KNO2, and in solid binary salt systems sodium nitrate – sodium nitrite NaNO3 – NaNO2 and potassium nitrate - potassium nitrite KNO3 – KNO2 were studied with the Raman spectroscopic methods. We have found that the relaxation time of the fully symmetric vibration of n1 (A) of the molecular nitrate anion NO3– in the solid binary salt systems “nitrate – nitrite” NaNO3 – NaNO2 or KNO3 – KNO2 is lower than in

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16

Landorfa-Svalbe, Zaiga, Una Andersone-Ozola, and Gederts Ievinsh. "Type of Anion Largely Determines Salinity Tolerance in Four Rumex Species." Plants 12, no. 1 (2022): 92. http://dx.doi.org/10.3390/plants12010092.

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The aim of the present study was to compare the effect of various salts composed of different cations (Na+, K+) and anions (chloride, nitrate, nitrite) on growth, development and ion accumulation in three Rumex species with accessions from sea coast habitats (Rumex hydrolapathum, Rumex longifolius and Rumex maritimus) and Rumex confertus from an inland habitat. Plants were cultivated in soil in an experimental automated greenhouse during the autumn–winter season. Nitrite salts strongly inhibited growth of all Rumex species, but R. maritimus was the least sensitive. Negative effects of chloride

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17

Moon, Heehun, Sang Woo Lim, Dongwon Kim, Ok-Sang Jung, and Young-A. Lee. "Supramolecular isomerism between cyclodimeric and sinusoidal 1D coordination polymers: competition of tunable argentophilic vs. electrostatic interactions." CrystEngComm 23, no. 5 (2021): 1272–80. http://dx.doi.org/10.1039/d0ce01779e.

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18

Gates, Andrew J., Victor M. Luque-Almagro, Alan D. Goddard, Stuart J. Ferguson, M. Dolores Roldán, and David J. Richardson. "A composite biochemical system for bacterial nitrate and nitrite assimilation as exemplified by Paracoccus denitrificans." Biochemical Journal 435, no. 3 (2011): 743–53. http://dx.doi.org/10.1042/bj20101920.

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The denitrifying bacterium Paracoccus denitrificans can grow aerobically or anaerobically using nitrate or nitrite as the sole nitrogen source. The biochemical pathway responsible is expressed from a gene cluster comprising a nitrate/nitrite transporter (NasA), nitrite transporter (NasH), nitrite reductase (NasB), ferredoxin (NasG) and nitrate reductase (NasC). NasB and NasG are essential for growth with nitrate or nitrite as the nitrogen source. NADH serves as the electron donor for nitrate and nitrite reduction, but only NasB has a NADH-oxidizing domain. Nitrate and nitrite reductase activit

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19

Theppitak, Chatphorn, Sakchai Laksee та Kittipong Chainok. "Crystal structure and Hirshfeld surface analysis of tris(acetohydrazide-κ² N,O)(nitrato-κO)(nitrato-κ² O,O′)terbium(III) nitrate". Acta Crystallographica Section E Crystallographic Communications 78, № 4 (2022): 354–58. http://dx.doi.org/10.1107/s2056989022002298.

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In the title lanthanide(III) compound, [Tb(NO3)2(C2H6N2O)3]NO3, the asymmetric unit contains one Tb3+ ion, three acetohydrazide (C2H6N2O) ligands, two coordinated nitrate anions, and an isolated nitrate anion. The Tb3+ ion is in a ninefold coordinated distorted tricapped trigonal–prismatic geometry formed by three oxygen atoms and three nitrogen atoms from three different acetohydrazide ligands and three oxygen atoms from two nitrate anions. In the crystal, the complex molecules and the non-coordinated nitrate anions are assembled into a three-dimensional supramolecular architecture through ex

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20

Retno, Dipnorita, Budhi Oktavia, Indang Dewata, and Miftahul Khair. "Determination of Optimum Conditions for Nitrate Anion (NO₃ ⁻) Desorption on Mesoporous Silica Modified with Dimethylamine (DMA)." IOP Conference Series: Earth and Environmental Science 1228, no. 1 (2023): 012038. http://dx.doi.org/10.1088/1755-1315/1228/1/012038.

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Abstract Mesoporous silica is an inorganic material that has high potential to be applied in various industrial fields, one of its applications is the adsorption method. To maximize the adsorption of mesoporous silica, modification of the silica surface was carried out by adding amine compounds. The amine compound used as a modifier is dimethylamine (DMA), using glycidoxypropyltrimethoxysilane (GPTMS) as a linking compound. The column method uses mesoporous silica, modified with dimethylamine, in the nitrate anions adsorption process. The adsorption capacity of the nitrate anion is 0.0917 mg/g

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21

Saccani, Giovanna, Enrica Tanzi, Silvano Cavalli, and Jeff Rohrer. "Determination of Nitrite, Nitrate, and Glucose-6-Phosphate in Muscle Tissues and Cured Meat by IC/MS." Journal of AOAC INTERNATIONAL 89, no. 3 (2006): 712–19. http://dx.doi.org/10.1093/jaoac/89.3.712.

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Abstract The endogenous nitrate concentration in fresh meat and the residual nitrate and nitrite contents after curing are related to food quality and safety. Most ion chromatography (IC) methods suffer from interferences, especially in fresh meat samples, in which the endogenous nitrate content is low, and in cured meat products, in which other nitrogenous compounds can interfere with the separation of inorganic anions. One of the major classes of interfering compounds in fresh meat are sugar phosphates, which originate from glycolysis during the conversion of muscle glycogen to lactic acid.

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22

Tepuš, Brigita, and Marjana Simonič. "Uncertainty of nitrate and sulphate measured by ion chromatography in wastewater samples." Open Chemistry 5, no. 2 (2007): 557–69. http://dx.doi.org/10.2478/s11532-007-0002-3.

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AbstractThis paper presents an evaluation of measurement uncertainty regarding the results of anion (nitrate and sulphate) concentrations in wastewater. Anions were determined by ion chromatography (EN ISO 10304-2, 1996). The major sources of uncertainty regarding the measurements’ results were identified as contributions to linear least — square or weighted regression lines, precision, trueness, storage conditions, and sampling. Determination of anions in wastewater is very important for the purification procedure, especially the amount of nitrate in waste and potable waters. The determined e

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23

Sears, Jeremiah, Roger Cramer, and Timothy Boyle. "Crystal structure of hydroxy scandium nitrate chloride." Acta Crystallographica Section E Crystallographic Communications 75, no. 5 (2019): 540–42. http://dx.doi.org/10.1107/s2056989019003918.

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Each Sc3+ ion in the title salt, di-μ-hydroxido-bis[triaqua(nitrato-κ2 O,O′)scandium(III)] dichloride, [Sc2(NO3)2(OH)2(H2O)6]Cl2, is coordinated by a nitrate anion, two hydroxide ions and three water molecules to generate a distorted pentagonal–bipyramidal ScO7 coordination polyhedron. The complete {[(NO3)(μ-OH)Sc(H2O)3]2}2+ ion is generated by crystallographic inversion symmetry. The nitrate anion binds in a bidentate fashion whereas the hydroxide ions are bridged between two Sc centers. Two charge-balancing Cl− ions are located in the outer sphere. In the extended structure, O—H...O and O—H.

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24

Jia, W., and J. A. Cole. "Nitrate and nitrite transport in Escherichia coli." Biochemical Society Transactions 33, no. 1 (2005): 159–61. http://dx.doi.org/10.1042/bst0330159.

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Two polytopic membrane proteins, NarK and NarU, are involved in nitrate and nitrite uptake and nitrite extrusion by Escherichia coli. A third polytopic membrane protein, NirC, functions only in nitrite transport. During exponential growth, the quantity of NarU in membrane fractions was <0.01% of the quantity of NarK. During the stationary phase of growth, the ratio of NarU to NarK increased to 0.1%. However, in the exponential phase of growth, the strain expressing only NarK transports and reduces nitrate and nitrite at a rate only slightly higher than that of the strain expressing only Nar

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25

Muntzeck, Maren, and René Wilhelm. "Protic ionic liquids as catalysts for a three-component coupling/hydroarylation/dehydrogenation tandem reaction." Zeitschrift für Naturforschung B 73, no. 7 (2018): 515–19. http://dx.doi.org/10.1515/znb-2018-0084.

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AbstractProtic ionic liquids with nitrate anions were used as solvents and catalysts for a three-component oxidative dehydrogenation tandem reaction via the coupling and hydroarylation of benzaldehyde, aniline, and phenylacetylene to a quinoline derivative. The reaction was supported by air and microwave irradiation. The presence of nitrate as counter anion in the protic ionic liquids was essential for the reaction.

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26

Mehregan, Shima, Colin S. Gopaul, Henry D. Koenig, et al. "Multiplex Pulsed Current Sensors for Anion Detection." ECS Meeting Abstracts MA2024-02, no. 65 (2024): 4383. https://doi.org/10.1149/ma2024-02654383mtgabs.

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Low-cost and stable sensors are needed for long-duration monitoring of nitrate and phosphate in waterways to help improve farming practices and understand the negative environmental and economic impacts caused by the release of these ions. One established platform that shows promise for detecting these ions is the use of solid-contact ion selective electrodes (SC−ISEs). Conventional SC-ISE measurements monitor electrode potential under open circuit conditions to quantify the amount of one target analyte. These conventional SC-ISEs rely on highly engineered membrane materials that are formulate

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27

Karthikeyan, Jayakumar, Helmer Fjellvåg, Silje Bundli, and Anja Olafsen Sjåstad. "Efficient Exfoliation of Layered Double Hydroxides; Effect of Cationic Ratio, Hydration State, Anions and Their Orientations." Materials 14, no. 2 (2021): 346. http://dx.doi.org/10.3390/ma14020346.

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The exfoliation ability of nitrate based Mg1−xAlx(OH)2(NO3)x·mH2O layered double hydroxides (Mg-Al LDH) in formamide into single or multilayer nanosheets depends strongly on nitrate anion orientation and layer charge. Our systematic studies used materials that were likely to disclose differences with respect to anion type and their concentrations in the interlayer gallery. We assured to avoid any carbonate incorporation into the galleries for nitrate, chloride, iodide, and sulfate based Mg-Al LDHs. Furthermore, the comparative exfoliation experiments were conducted for fully hydrated samples w

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28

Yang, Yufeng, Xin Wu, Nathalie Busschaert, Hiroyuki Furuta, and Philip A. Gale. "Dissecting the chloride–nitrate anion transport assay." Chemical Communications 53, no. 66 (2017): 9230–33. http://dx.doi.org/10.1039/c7cc04912a.

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Xu, Jian-Fu, Ping Chen, Rubin Zhuang, Chang-Cang Huang та Han-Hui Zhang. "catena-Poly[1,2-ethylenediammonium [[nitratouranyl]-μ3-phosphito] dihydrate]". Acta Crystallographica Section E Structure Reports Online 62, № 4 (2006): m763—m764. http://dx.doi.org/10.1107/s1600536806008476.

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The crystal structure of the title compound, {(C2H10N2)[U(HPO3)(NO3)O2]·2H2O} n , consists of polymeric uranyl complex anions, ethylenediammonium cations and uncoordinated water molecules. The polymeric uranyl complex anion displays a ladder-like structure, each UO2 unit being coordinated by three phosphite dianions and one nitrate anion with a pentagonal–bipyramidal geometry. The ethylenediammonium cation is located on an inversion center and is hydrogen bonded with the uranyl complex.

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30

Zabolotsky, V. I., N. A. Romanyuk, and S. A. Loza. "Electrochemical Properties and Specific Selectivity of Ion-Exchange Membranes in Borate-Nitrate Electrolyte Solutions." Мембраны и мембранные технологии 13, no. 1 (2023): 3–14. http://dx.doi.org/10.31857/s221811722301008x.

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Electrochemical characteristics of heterogeneous cation- and anion-exchange Ralex membranes and the mechanism of transfer of ions of salt, boric acid and its anions through membranes at different pH values were investigated by the method of rotating membrane disk (RMD). It is shown that boric acid is transported mainly through an anion exchange membrane. At pH 9.5, the limiting stage of anion transfer through the anion exchange membrane is the reaction of tetrahydroxyborate \({\text{B}}\left( {{\text{OH}}} \right)_{4}^{ - }\) anion formation. The study of the electrodialysis separation of a so

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31

Yang, Gang Qiang, Xiao Ping Zou, Xiang Min Meng, et al. "Lead Oxide Plate Precipitates from Lead Nitrate Solution." Advanced Materials Research 123-125 (August 2010): 1243–46. http://dx.doi.org/10.4028/www.scientific.net/amr.123-125.1243.

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In this paper, a simple and controllable method to fabricate - and -PbO is reported. Lead nitrate as precursor was dissolved in 50ml distilled water, and was heated to 80oC. Sodium chloride was added into the lead nitrate aqueous solution. During the process, -PbO deposition will be obtained when we add lead nitrate solutions with KOH pellets without chloride anion. When we add lead nitrate solutions with KOH pellets with a little chloride anion, there will produce -PbO deposition. Our results indicate that the concentration of chloride anion and temperature of reaction solution affects th

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32

Assoumatine, Tokouré, and Helen Stoeckli-Evans. "Silver(I) nitrate complexes of three tetrakis-thioether-substituted pyrazine ligands: metal–organic chain, network and framework structures." Acta Crystallographica Section E Crystallographic Communications 73, no. 3 (2017): 434–40. http://dx.doi.org/10.1107/s2056989017002791.

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The reaction of the ligand 2,3,5,6-tetrakis[(methylsulfanyl)methyl]pyrazine (L1) with silver(I) nitrate led to {[Ag(C12H20N2S4)](NO3)}n, (I),catena-poly[[silver(I)-μ-2,3,5,6-tetrakis[(methylsulfanyl)methyl]pyrazine] nitrate], a compound with a metal–organic chain structure. The asymmetric unit is composed of two half ligands, located about inversion centres, with one ligand coordinating to the silver atoms in a bis-tridentate manner and the other in a bis-bidentate manner. The charge on the metal atom is compensated for by a free nitrate anion. Hence, the silver atom has a fivefold S3N2coordin

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33

Robles-Jimarez, H. R., N. Jornet-Martínez, and P. Campíns-Falcó. "New Green and Sustainable Tool for Assessing Nitrite and Nitrate Amounts in a Variety of Environmental Waters." Water 15, no. 5 (2023): 945. http://dx.doi.org/10.3390/w15050945.

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This paper aims to provide improved selectivity and sensitivity with a short analysis time of about 10 min and low residues for quantitation of nitrite and nitrate in waters by liquid chromatography. Ion-pair formation and ion exchange retention mechanisms were considered. The optimized option was in-tube solid phase microextraction (IT-SPME) by means of a silica capillary of 14 cm length and 0.32 mm id, coupled online with a capillary anion exchange analytical column (Inertsil AX 150 × 0.5 mm id, 5 µm) and the use of their native absorbance. Precision of the retention times expressed as % rel

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Fan, Ying-Ju, Jian-Ping Ma та Zhong-Xi Sun. "Bis{(E)-1-[1-(2-pyridyl)ethylidene]thiosemicarbazonato-κ3 N,N′,S}gallium(III) nitrate". Acta Crystallographica Section E Structure Reports Online 63, № 11 (2007): m2663. http://dx.doi.org/10.1107/s160053680704799x.

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Reaction of gallium(III) nitrate with (E)-1-[1-(2-pyridyl)ethylidene]thiosemicarbazide (petc) afforded the title complex, [Ga(C8H9N4S)2]NO3. The title complex contains one GaIII cation and two enol-form petc anions, accompanied by one charge-balancing disordered nitrate anion. The petc is in the enol form, coordinating to the GaIII centre via one S atom and two N atoms. Thus, the GaIII centre assumes a distorted octahedral coordination geometry.

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35

Liu, Dong-Sheng, Gan-Sheng Huang, Qiu-Yan Luo, Ya-Ping Xu та Xin-Fa Li. "Poly[tetramethylammonium [nitratouranyl-μ3-selenito]]". Acta Crystallographica Section E Structure Reports Online 62, № 7 (2006): m1584—m1585. http://dx.doi.org/10.1107/s1600536806022045.

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The title compound, (C4H12N)[UO2(NO3)(SeO3)], consists of uranyl complex anions and [NMe4]+ cations. Both cations and anions display mirror symmetry. Each UO2 unit is coordinated by three selenite dianions and one nitrate anion with a pentagonal–bipyramidal geometry, forming anionic ladder-like chains with charge-compensating [NMe4]+ cations intercalated between the chains.

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36

Eyal, A., and O. Kedem. "Nitrate-selective anion-exchange membranes." Journal of Membrane Science 38, no. 2 (1988): 101–11. http://dx.doi.org/10.1016/s0376-7388(00)80873-x.

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37

Trogisch, Gudrun D., Helmut Köcher, and Wolfram R. Ullrich. "Effects of Glufosinate on Anion Uptake in Lemna gibba G 1." Zeitschrift für Naturforschung C 44, no. 1-2 (1989): 33–38. http://dx.doi.org/10.1515/znc-1989-1-206.

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Abstract The duckweed Lemna gibba G 1 was used as a model to study inhibitory sites with the herbicide and glutamate analogue glufosinate (PPT). Growth and chlorophyll formation were partly inhibited by 25 n-M, completely suppressed by 250 (im PPT. Photosynthesis showed partial inhibition within few hours, dark respiration ( 0 2 consumption) increased already within one hour. In the presence of 1 mM PPT in the light, the ammonium pool of Lemna increased to 600% within few hours, later to 1000%. The overall amino acid pool exhibited a slower increase to 300%, the nitrate pool only a slight incr

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38

Diop, Mouhamadou Birame, Libasse Diop, and Thierry Maris. "Crystal structures of the two salts 2-methyl-1H-imidazol-3-ium nitrate–2-methyl-1H-imidazole (1/1) and 2-methyl-1H-imidazol-3-ium nitrate." Acta Crystallographica Section E Crystallographic Communications 72, no. 4 (2016): 482–85. http://dx.doi.org/10.1107/s2056989016003789.

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The title salts, C4H7N2+·NO3−·C4H6N2, (I), and C4H7N2+·NO3−, (II), were obtained from solutions containing 2-methylimidazole and nitric acid in different concentrations. In the crystal structure of salt (I), one of the –NH H atoms of the imidazole ring shows half-occupancy, hence only every second molecule is in its cationic form. The nitrate anion in this structure lies on a twofold rotation axis. The neutral 2-methylimidazole molecule and the 2-methyl-1H-imidazol-3-ium cation interact through N—H...N hydrogen bonds to form [(C4H6N2)...(C4H7N2)+] pairs. These pairs are linked with two nitrate

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39

Zhang, Wei. "Tetrakis(1,10-phenanthroline)bis(μ-pyridine-2,6-dicarboxylato)(pyridine-2,6-dicarboxylato)dicopper(II)terbium(III) nitrate tetrahydrate". Acta Crystallographica Section E Structure Reports Online 68, № 8 (2012): m1084—m1085. http://dx.doi.org/10.1107/s1600536812031686.

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The asymmetric unit of the title compound, [Cu2Tb(C7H3NO4)3(C12H8N2)4]NO3·4H2O, consists of one-half of theC2-symmetric trinuclear coordination cation, one-half of theC2-symmetric nitrate anion and two water molecules. In the coordination cation, the CuIIatom is coordinated by four N atoms from two 1,10-phenanthroline ligands and two O atoms from a bridging–chelating carboxylate group of the pyridine-2,6-dicarboxylate anion, completing a distorted N4O2octahedral coordination environment. The TbIIIatom, located on a twofold rotation axis, is nine-coordinated by three tridentate pyridine-2,6-dic

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40

Roy, Tapashi G., Saroj K. S. Hazari, Babul Chandra Nath, Seik Weng Ng та Edward R. T. Tiekink. "cis-(Nitrato-κ2O,O′)(2,5,5,7,9,12,12,14-octamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)cadmium nitrate hemihydrate". Acta Crystallographica Section E Structure Reports Online 68, № 4 (2012): m494—m495. http://dx.doi.org/10.1107/s160053681201238x.

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The CdIIatom in the title complex, [Cd(NO3)(C18H40N4)]NO3·0.5H2O, is coordinated within acis-N4O2donor set provided by the tetradentate macrocyclic ligand and two O atoms of a nitrate anion; the coordination geometry is distorted octahedral. The lattice water molecule is located on a twofold rotation axis. N—H...O hydrogen bonds and weak C—H...O interactions link the complex cations into a supramolecular layer in thebcplane. Layers are connected by O—H...O hydrogen bonds between the lattice water molecule and the non-coordinating nitrate anion, as well as by weak C—H...O contacts.

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Buvaylo, Elena A., Vladimir N. Kokozay, Olga Yu Vassilyeva та Brian W. Skelton. "Bis{2-[(pyridin-2-yl)methylideneamino]benzoato-κ3N,N′,O}chromium(III) nitrate monohydrate". Acta Crystallographica Section E Structure Reports Online 70, № 4 (2014): m136. http://dx.doi.org/10.1107/s1600536814005649.

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The title complex salt hydrate, [Cr(C13H9N2O2)2]NO3·H2O, comprises discrete cations, nitrate anions and solvent water molecules. The CrIIIatom is octahedrally coordinated by two anionic Schiff base ligands with the O atoms beingcis. The two ligands differ significantly with dihedral angles between the pyridine and benzene rings of 4.8 (2) and 24.9 (2)°. The nitrate anion and solvent water molecule were modelled as being disordered, with the major components having site-occupancy values of 0.856 (14) and 0.727 (16), respectively. The crystal is built of alternating layers of cations and of anio

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42

Baes, Aloysius U., Tetsuji Okuda, Wataru Nishijima, Eiji Shoto, and Mitsumasa Okada. "Adsorption and ion exchange of some groundwater anion contaminants in an amine modified coconut coir." Water Science and Technology 35, no. 7 (1997): 89–95. http://dx.doi.org/10.2166/wst.1997.0264.

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The adsorption of nitrate, chromium (VI), arsenic (V) and selenium (VI) anions in an amine modified coconut coir (MCC-AE : with secondary and tertiary amine functionality) were studied to determine the capability of this easily prepared and low-cost material in removing typical groundwater anion contaminants. Batch adsorption-ion exchange experiments were conducted using 200 mg MCC-AE, initially containing chloride as the resident anion, and 50 ml of different anion-containing water of varying concentrations. It is presumed, at this low pH, that only SeO42− remained as a divalent anion, while

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Tan, Susie S. S., Peter C. Hauser, Nikolas A. Chaniotakis, Gabriela Suter, and Wilhelm Simon. "Anion-Selective Optical Sensors Based on a Coextraction of Anion-Proton Pairs into a Solvent-Polymeric Membrane." CHIMIA 43, no. 9 (1989): 257. https://doi.org/10.2533/chimia.1989.257.

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The design of optical sensing devices for anions based on the coextraction of anions and protons into a PVC membrane is described. The extraction is controlled by the lipophilicity of the anions, while the coextracted protons in conjunction with a hydrogen ion selective chromoionophore provide the optical signal transduction. The absorbance of the membrane at a fixed pH of the aqueous sample solution and at constant anion concentrations is related to the hydration energy (Hofmeister series) of the anions. Calibration curves, response times, and reproducibilities of such sensor systems are pres

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Ellis, Ross J., Mrinal K. Bera, Benjamin Reinhart, and Mark R. Antonio. "Trapped in the coordination sphere: nitrate ion transfer driven by the cerium(iii/iv) redox couple." Physical Chemistry Chemical Physics 18, no. 45 (2016): 31254–59. http://dx.doi.org/10.1039/c6cp06528g.

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The electrochemical transfer of nitrate anions between oil and water phases—driven by the reduction and oxidation of cerium coordination complexes in oil phases—provides a new entry into chemical separations where an electrode potential tunes solute transfer between phases by ‘trapping’ the migrating anion on the cerium cation.

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45

Dharmapriya, Thakshila Nadeeshani, Hsin-Yin Shih, and Po-Jung Huang. "Facile Synthesis of Hydrogel-Based Ion-Exchange Resins for Nitrite/Nitrate Removal and Studies of Adsorption Behavior." Polymers 14, no. 7 (2022): 1442. http://dx.doi.org/10.3390/polym14071442.

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This research aimed to create facile, reusable, hydrogel-based anion exchange resins that have been modified with two different amines to test their ability to adsorb nitrate and nitrite in water using batch and continuous systems. In the batch experiment, maximum adsorption capacities of nitrate and nitrite onto poly (ethylene glycol) diacrylate methacryloxyethyltrimethyl ammonium chloride (PEGDA-MTAC) and poly (ethylene glycol) diacrylate 2-aminoethyl methacrylate hydrochloride (PEGDA-AMHC) adsorbents can be obtained as 13.51 and 13.16 mg NO3−-N/g sorbent; and 12.36 and 10.99 mg NO2−-N/g sor

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46

Hidayat, Endar, Tomoyuki Yoshino, Seiichiro Yonemura, Yoshiharu Mitoma, and Hiroyuki Harada. "Synthesis, Adsorption Isotherm and Kinetic Study of Alkaline- Treated Zeolite/Chitosan/Fe3+ Composites for Nitrate Removal from Aqueous Solution—Anion and Dye Effects." Gels 8, no. 12 (2022): 782. http://dx.doi.org/10.3390/gels8120782.

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In the present study, alkaline-treated zeolite/chitosan/Fe3+ (ZLCH-Fe) composites were prepared and analyzed using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) and pH of zero point of charge (pHzpc) to remove nitrates from water. The process was carried out using an adsorption method with a varied initial pH, adsorbent dosage, initial nitrate concentration and contact time. The pHzpc demonstrated that the ZLCH-Fe surface had a positive charge between 2 and 10, making it easier to capture the negative charge of nitrate. However, the optimal pH value is 7. A

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47

Khan, Mohd Farhan, Jawed Mustafa, Faez Qahtani, et al. "Inorganic Nitrate Determination Employing Co(II) Complex Potentiometry." Science of Advanced Materials 16, no. 5 (2024): 606–13. http://dx.doi.org/10.1166/sam.2024.4672.

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The research presented here describes the development of membranes made of polymeric materials with unique cobalt(II) complexes to identify nitrate anions in water. The authors of the study precisely coordinated cobalt(II) ions with a neutral tetradentate ligand known as N,N-Ethylene bis(Salicylideneaminato) to develop an efficient anion-binding carrier with nitrate sensitivity. Good nitrate specificity was accomplished by incorporating these Co(II) complexes onto membranes alongside the plasticizer dibutyl phthalate (DBP). The improved Co(II)-based sensors achieved near-Nernstian response slo

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48

Fedorenko, George V., Oleksandr I. Zbruyev, Anna V. Pavlishchuk, et al. "The crystal structure of a mononuclear Pr^III complex with cucurbit[6]uril." Acta Crystallographica Section E Crystallographic Communications 80, no. 7 (2024): 789–94. http://dx.doi.org/10.1107/s2056989024005760.

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A new mononuclear complex, pentaaqua(cucurbit[6]uril-κ2 O,O′)(nitrato-κ2 O,O′)praseodymium(III) dinitrate 9.56-hydrate, [Pr(NO3)(CB6)(H2O)5](NO3)2·9.56H2O (1), was obtained as outcome of the hydrothermal reaction between the macrocyclic ligand cucurbit[6]uril (CB6, C36H36N24O12) with a tenfold excess of Pr(NO3)3·6H2O. Complex 1 crystallizes in the P21/n space group with two crystallographically independent but chemically identical [Pr(CB6)(NO3)(H2O)5]2+ complex cations, four nitrate counter-anions and 19.12 interstitial water molecules per asymmetric unit. The nonacoordinated PrIII in 1 are lo

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49

Lee, Angela I., Asunción Delgado, and Robert P. Gunsalus. "Signal-Dependent Phosphorylation of the Membrane-Bound NarX Two-Component Sensor-Transmitter Protein ofEscherichia coli: Nitrate Elicits a Superior Anion Ligand Response Compared to Nitrite." Journal of Bacteriology 181, no. 17 (1999): 5309–16. http://dx.doi.org/10.1128/jb.181.17.5309-5316.1999.

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ABSTRACT The Nar two-component regulatory system, consisting of the dual sensor-transmitters NarX and NarQ and the dual response regulators NarL and NarP, controls the expression of various anaerobic respiratory pathway genes and fermentation pathway genes. Although both NarX and NarQ are known to detect the two environmental signals nitrate and nitrite, little is known regarding the sensitivity and selectivity of ligand for detection or activation of the sensor-transmitters. In this study, we have developed a sensitive anion-specific in vitro assay for NarX autophosphorylation by using Escher

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50

Nicholas, A. Martin de P., and Roderick E. Wasylishen. "A nuclear magnetic resonance study of aqueous solutions of several nitrate salts." Canadian Journal of Chemistry 65, no. 5 (1987): 951–56. http://dx.doi.org/10.1139/v87-161.

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Rotational correlation times for the end-over-end rotation of the C3 symmetry axis of the nitrate anion in the temperature range 3–80 °C are studied by nuclear magnetic resonance spectroscopy for a variety of nitrate salts in aqueous solution. The counterion is found to retard the rotation of the anion in the following order: Sc3+ > La3+ > Pb2+ > Ca2+, Sr2+ > Al3+, K+, Na+, (CH3)4N+ > Zn2+, Mg2+, Li+, NH4+, H3O+. This relative order is discussed in terms of the association of the nitrate ion with the cation. Oxygen-17 nmr spin-lattice relaxation times in combination with 14N nmr

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