Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 9 of 9 for “"N-nitrosamines"”.
-
Bismuth Tungstate Photocatalysis for N-Nitrosamines Removal from Amine Washing Wastewater
… marine life. Amine degradation products like N-nitrosamines are carcinogenic and mutagenic. The formation of carcinogenic and mutagenic N-nitrosamines can obstruct the technology's industrial application. To reduce the impact on human health and marine life, identifying and treating …
-
Leveraging the Photochemistry of N-Nitrosamines for Their Aqueous Detection, and Development of a Novel Hemi-Iptycene for Porous Polymers
N-Nitrosamines are a class of compounds known for both the potent carcinogenicity of many of its members, and for their widespread occurrence in the human environment. Consequently, the development of methods for their detection is an active area of research. Chapter 1 provides an introduction to …
-
Determination of Organic Compounds by Atomic Absorption Spectrophotometry (AAS) with Special Reference to Compounds Encountered in Environmental Problems
… was the possible determination of certain N-nitrosamines. These are carcinogenic substances formed by the interaction of organic secondary amines with nitrite salts. In the present work, the spectrophotometric determination of saccharin by selective solvent extraction from aqueous solutions …
-
Total N-nitrosamine Precursor Adsorption with Carbon Nanotubes: Elucidating Controlling Physiochemical Properties and Developing a Size-Resolved Precursor Surrogate
… (THMs), dihaloacetonitriles (DHANs), and N-nitrosamines – during water treatment may also increase. N-nitrosamines may comprise the bulk of the chronic toxicity in treated drinking waters despite forming at low ng/L levels. This research seeks to elucidate physicochemical properties of …
-
Occurrence, monitoring and removal of drinking water contaminants by advanced technologies
… has been linked N-nitrosamine formation. N-nitrosamines are a group of nitrogenous DBPs (N-DBPs) which are highly carcinogenic in comparison to regulated DBPs (THMs and HAAs, generated by FC disinfection). Also in the forefront of drinking water concerns are other emerging drinking water …
-
Chemical exposures in drinking water: contaminant analysis and physicochemical behavior
… contaminants (i.e., probable carcinogens, N-nitrosamines), improving method sensitivity and critically identifying false-positive interferences. Finally, methods were evaluated and deployed for the determination of physicochemical properties of N-nitrosamines. The results of which demonstrate …
-
Chemical Sensing of N-Nitrosodimethylamine and Methane
… on a luminescent method to determine levels of N-nitrosamines is presented. This work involved the synthesis of five phosphines bearing N-heterocycles, followed by coordination with Cu(I) to give luminescent complexes. Emission spectra spanned the visible range, demonstrating the tuneability of …
-
Drinking water disinfection by-products detection, formation and the precursors removal study
… precursors are present, highly toxic N-nitrosamines may form during water treatment process. In the third part of this dissertation, zeolites and activated carbon were examined for ammonia and N-nitrosamine precursors removal when incorporated into drinking water treatment …
-
Exposure, telomere length, and cancer risk
… exposures and telomere length were found: N-nitrosamines were related to shorter telomeres, whereas welding fumes and diesel exhaust showed no significant impact on telomere length. Arsenic in drinking water was related to longer telomeres and the association between arsenic and telomere …