Publications associées à Nitrosamine

Role of Carbonyl Compounds for N-Nitrosamine Formation during Nitrosation: Kinetics and Mechanisms

Urs von Gunten, Florian Frédéric Vincent Breider, Yishuai Pan

N-Nitrosamines are potential human carcinogens frequently detected in natural and engineered aquatic systems. This study sheds light on the role of carbonyl compounds in the formation of N-nitrosamines by nitrosation of five secondary amines via different ...

2024

A Survey of Industrial N-nitrosamine Discharges in Switzerland

Urs von Gunten, Florian Frédéric Vincent Breider, Caroline Gachet Aquillon

N-nitrosamines are formed during different industrial processes and are of significant concern due to their carcinogenic and mutagenic properties. This study reports concentrations of N-nitrosamines in eight different industrial wastewater treatment plants ...

2023

Synthesis of 3-Acyloxyindolenines by TiCl3-Mediated Reductive Cyclization of 2-(ortho-Nitroaryl)-Substituted Enol Esters

Qian Wang, Jieping Zhu, Cyril Piemontesi, Dina Boyarskaya, Alberto Ongaro

In the presence of TiCl3, the reductive cyclization of tetrasubstituted enol esters bearing a 2-(ortho-nitroaryl) substituent affords 3-acyloxy-2,3-disubstituted indolenines in good yields. A domino process involving the partial reduction of nitro to a nit ...

2022

Specific and total N -nitrosamines formation potentials of nitrogenous micropollutants during chloramination

Urs von Gunten, Florian Frédéric Vincent Breider, Caroline Gachet Aquillon, Andrea Piazzoli

N-nitrosamines are a group of potent human carcinogens that can be formed during oxidative treatment of drinking water and wastewater. Many tertiary and quaternary amines present in consumer products (e.g., pharmaceuticals, personal care and household prod ...

2018

Re-assessing the Formation of N-nitrosamines during Chloramination of Various Nitrogenous Compounds using Specific and Total N-nitrosamines Analysis

Urs von Gunten, Florian Frédéric Vincent Breider, Andrea Piazzoli

N-nitrosamines (NOAs) are potent carcinogenic and mutagenic compounds that can be present in water, biological fluids, food, consumer products and cigarette smoke. Several studies have shown that the formation of NOAs in water can arise from the reactions ...

2018

Formation of N-nitrosamines by micelle-catalysed nitrosation of aliphatic secondary amines

Urs von Gunten, Florian Frédéric Vincent Breider, Isuf Salihu

N-Nitrosamines are an important class of potent human carcinogens and mutagens that can be present in water and wastewater. For instance, N-nitrosamines can be formed by reaction of nitrosating agents such as NO+ or N2O3 formed from nitrite under acidic co ...

2018

Quantification of Total N-Nitrosamine Concentrations in Aqueous Samples via UV-Photolysis and Chemiluminescence Detection of Nitric Oxide

Urs von Gunten, Florian Frédéric Vincent Breider

N-Nitrosamines are potent mutagens and carcinogens that can be formed during oxidative water treatment. This study describes a novel method for the determination of total N-nitrosamines by UV-photolysis and subsequent chemiluminescence detection of nitric ...

American Chemical Society2017

Development of mutagenicity during degradation of N-nitrosamines by advanced oxidation processes

Urs von Gunten, Kristin Schirmer, Silvio Canonica

Development of mutagenicity of five N-nitrosamines (N-nitrosodimethylamine (NDMA), N-nitrosodiethylamine (NDEA), N-nitrosodi-n-propylamine (NDPA), N-nitrosopyrrolidine (NPYR) and N-nitrosodiphenylamine (NDPhA)) was investigated during oxidative processes i ...

Elsevier2014

Analysis of N-nitrosamines and other nitro(so) compounds in water by high-performance liquid chromatography with post-column UV photolysis/Griess reaction

Urs von Gunten, Minju Lee, Yun Ho Lee

Despite their potential carcinogenicity and probable formation during water disinfection processes, little is known about the occurrence of other nitro(so) compounds than a few specific N-nitroso compounds such as N-nitrosodimethylamine (NDMA). An analytic ...

Elsevier2013

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Nitrosamine

Role of Carbonyl Compounds for N-Nitrosamine Formation during Nitrosation: Kinetics and Mechanisms

A Survey of Industrial N-nitrosamine Discharges in Switzerland

Synthesis of 3-Acyloxyindolenines by TiCl3-Mediated Reductive Cyclization of 2-(ortho-Nitroaryl)-Substituted Enol Esters

Specific and total N -nitrosamines formation potentials of nitrogenous micropollutants during chloramination

Re-assessing the Formation of N-nitrosamines during Chloramination of Various Nitrogenous Compounds using Specific and Total N-nitrosamines Analysis

Formation of N-nitrosamines by micelle-catalysed nitrosation of aliphatic secondary amines

Quantification of Total N-Nitrosamine Concentrations in Aqueous Samples via UV-Photolysis and Chemiluminescence Detection of Nitric Oxide

Development of a new simple fluorometric method for total N-nitrosamines analysis in water

Development of mutagenicity during degradation of N-nitrosamines by advanced oxidation processes

Analysis of N-nitrosamines and other nitro(so) compounds in water by high-performance liquid chromatography with post-column UV photolysis/Griess reaction

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Chattez avec Graph Search

Specific and total N -nitrosamines formation potentials of nitrogenous micropollutants during chloramination

Development of mutagenicity during degradation of N-nitrosamines by advanced oxidation processes

Re-assessing the Formation of N-nitrosamines during Chloramination of Various Nitrogenous Compounds using Specific and Total N-nitrosamines Analysis

Quantification of Total N-Nitrosamine Concentrations in Aqueous Samples via UV-Photolysis and Chemiluminescence Detection of Nitric Oxide

Development of a new simple fluorometric method for total N-nitrosamines analysis in water

Analysis of N-nitrosamines and other nitro(so) compounds in water by high-performance liquid chromatography with post-column UV photolysis/Griess reaction

Synthesis of 3-Acyloxyindolenines by TiCl3-Mediated Reductive Cyclization of 2-(ortho-Nitroaryl)-Substituted Enol Esters

Formation of N-nitrosamines by micelle-catalysed nitrosation of aliphatic secondary amines