| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 |
 262 3 |
| Ultima descărcare din IBN: 2023-01-03 12:12 |
 SM ISO690:2012SPATARU, Petru. Influence of organic ammonium derivatives on the equilibria between NH4+, NO2− and NO3− ions in the Nistru River water. In: Scientific Reports, 2022, vol. 12, pp. 1-12. ISSN 2045-2322. DOI: https://doi.org/10.1038/s41598-022-17568-3 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
  Scientific Reports |
||||||
| Volumul 12 / 2022 / ISSN 2045-2322 | ||||||
|
||||||
| DOI:https://doi.org/10.1038/s41598-022-17568-3 | ||||||
| Pag. 1-12 | ||||||
|
||||||
 Descarcă PDF |
||||||
| Rezumat | ||||||
The toxic effects of ammonium derivatives in the river water depend dramatically on their natural or synthetic origins and on their chemical structures. It has been proved that 1-naphtylamine (1-NA) and diphenylamine (DPA) breaking impact on the ammonium oxidation and especially on nitrite ions oxidation processes in natural waters is associated with its toxicity. The NH4+ oxidation process slows down for about five days and ten days in river water samples with 0.5 mg/L DPA and corresponding 0.5 mg/L 1-NA. The NO2− oxidation delay in model samples of river water with 0.025 and 0.05 mg/L 1-NA, is four days and 35 days in the one with 0.5 mg/L 1-NA. For the sample with 0.05 mg/L DPA the delay of the NO2− oxidation is approximately of six days and 25 days for sample with 0.5 mg/L, DPA. The laboratory simulations have revealed: (1) absorption–desorption, the micro biotic reaction to the instantaneous increase of the concentration of ammonium ion in the river water (so-called shock/stress effect) and (2) the NH4+ increase stimulated by a certain (0.05 mg/L) concentration of 1-NA.The diethylamine (DEA) decomposition leads to increasing with approximately 3.8 mg/L NH4+ in river water samples of 20.0 mg/L DEA. |
||||||
| Cuvinte-cheie Ammonium Compounds, Ions, Nitrates, Nitrogen, nitrogen dioxide, rivers, water, Water Pollutants, chemical |
||||||
|
DataCite XML Export
<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns='http://datacite.org/schema/kernel-3' xsi:schemaLocation='http://datacite.org/schema/kernel-3 http://schema.datacite.org/meta/kernel-3/metadata.xsd'> <identifier identifierType='DOI'>10.1038/s41598-022-17568-3</identifier> <creators> <creator> <creatorName>Spătaru, P.A.</creatorName> <affiliation>Institutul de Chimie, Moldova, Republica</affiliation> </creator> </creators> <titles> <title xml:lang='en'>Influence of organic ammonium derivatives on the equilibria between NH4+, NO2− and NO3− ions in the Nistru River water</title> </titles> <publisher>Instrumentul Bibliometric National</publisher> <publicationYear>2022</publicationYear> <relatedIdentifier relatedIdentifierType='ISSN' relationType='IsPartOf'>2045-2322</relatedIdentifier> <subjects> <subject>Ammonium Compounds</subject> <subject>Ions</subject> <subject>Nitrates</subject> <subject>Nitrogen</subject> <subject>nitrogen dioxide</subject> <subject>rivers</subject> <subject>water</subject> <subject>Water Pollutants</subject> <subject>chemical</subject> </subjects> <dates> <date dateType='Issued'>2022-12-22</date> </dates> <resourceType resourceTypeGeneral='Text'>Journal article</resourceType> <descriptions> <description xml:lang='en' descriptionType='Abstract'><p>The toxic effects of ammonium derivatives in the river water depend dramatically on their natural or synthetic origins and on their chemical structures. It has been proved that 1-naphtylamine (1-NA) and diphenylamine (DPA) breaking impact on the ammonium oxidation and especially on nitrite ions oxidation processes in natural waters is associated with its toxicity. The NH<sub>4</sub><sup>+</sup> oxidation process slows down for about five days and ten days in river water samples with 0.5 mg/L DPA and corresponding 0.5 mg/L 1-NA. The NO<sub>2</sub><sup>−</sup> oxidation delay in model samples of river water with 0.025 and 0.05 mg/L 1-NA, is four days and 35 days in the one with 0.5 mg/L 1-NA. For the sample with 0.05 mg/L DPA the delay of the NO<sub>2</sub><sup>−</sup> oxidation is approximately of six days and 25 days for sample with 0.5 mg/L, DPA. The laboratory simulations have revealed: (1) absorption–desorption, the micro biotic reaction to the instantaneous increase of the concentration of ammonium ion in the river water (so-called shock/stress effect) and (2) the NH<sub>4</sub><sup>+</sup> increase stimulated by a certain (0.05 mg/L) concentration of 1-NA.The diethylamine (DEA) decomposition leads to increasing with approximately 3.8 mg/L NH<sub>4</sub><sup>+</sup> in river water samples of 20.0 mg/L DEA.</p></description> </descriptions> <formats> <format>application/pdf</format> </formats> </resource>
|
|
|
