scholarly journals Degradation of Selected Antidepressants Sertraline and Citalopram in Ultrapure Water and Surface Water Using Gamma Radiation

Processes ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 63
Author(s):  
Anna Bojanowska-Czajka ◽  
Marta Pyszynska ◽  
Agnieszka Majkowska-Pilip ◽  
Kamil Wawrowicz
Keyword(s):  
Humic Acid ◽  
Surface Water ◽  
Ionizing Radiation ◽  
Gamma Radiation ◽  
Hydroxyl Radical ◽  
Ultrapure Water ◽  
Radical Scavengers ◽  
Radiation Process ◽  
Colon Cells ◽  
Radiation Technology

Gamma radiation was applied to degradation selected antidepressants in ultrapure water and surface water. Additionally, the influence of typical radical scavengers like carbonate, nitrate and humic acid was determined. The cytotoxicity towards liver cells HepG2 and colon cells Caco2 were measured during the radiation process. It was found that radiation technology, specifically ionizing radiation, can achieve satisfactory degradation efficiency with both SER and CIT. It was shown that the process of decomposition of the tested antidepressants with the highest efficiency occurs in the reaction with the hydroxyl radical.

Inactivation by Ionizing Radiation of Salmonella Enteritidis, Salmonella Infantis, and Vibrio parahaemolyticus in Oysters (Crassostrea brasiliana)

2003 ◽  
Vol 66 (6) ◽  
pp. 1025-1029 ◽  
Author(s):  
MIYOKO JAKABI ◽  
DILMA S. GELLI ◽  
JUSSARA C. M. D. TORRE ◽  
MARIA A. B. RODAS ◽  
BERNADETTE D. G. M. FRANCO ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Gamma Radiation ◽  
Vibrio Parahaemolyticus ◽  
Irradiation Dose ◽  
Salmonella Enteritidis ◽  
Pathogenic Bacteria ◽  
Sensory Attributes ◽  
Log10 Reduction ◽  
Radiation Process ◽  
Salmonella Serotypes

Irradiation is considered one of the most efficient technological processes for the reduction of microorganisms in food. It can be used to improve the safety of food products, and to extend their shelf lives. Oysters are considered one of the most important vehicles for pathogenic bacteria because of their feeding characteristics. The aim of this study was to evaluate the influence of a gamma radiation process on high levels of Salmonella Enteritidis, Salmonella Infantis, and Vibrio parahaemolyticus incorporated by oysters (Crassostrea brasiliana), as well as the effects of the process on the survival of the oysters and on their sensory attributes. The oysters were exposed to gamma radiation (60Co) in doses ranging from 0.5 to 3.0 kGy. A dose of 3.0 kGy was generally sufficient to reduce the level of Salmonella serotypes by 5 to 6 log10 units. A dose of 1.0 kGy was sufficient to produce a 6-log10 reduction in the level of V. parahaemolyticus. The highest irradiation dose did not kill the oysters or affect their sensory attributes. Hence, a dose of 3.0 kGy can be considered effective in inactivating Salmonella and V. parahaemolyticus in oysters without changing their odor, flavor, or appearance.

Post-hypoxic cellular disintegration in glycine-preserved renal tubules is attenuated by hydroxyl radical scavengers and iron chelators

2008 ◽  
Vol 393 (3) ◽  
pp. 303-310 ◽  
Author(s):  
Mohammed R. Moussavian ◽  
Jan E. Slotta ◽  
Otto Kollmar ◽  
Michael D. Menger ◽  
Gernot Gronow ◽  
...  
Keyword(s):  
Hydroxyl Radical ◽  
Iron Chelators ◽  
Renal Tubules ◽  
Radical Scavengers ◽  
Hydroxyl Radical Scavengers

Chemical Models of Advanced Oxidation Processes

1992 ◽  
Vol 27 (1) ◽  
pp. 23-42 ◽  
Author(s):  
William H. Glaze ◽  
Fernando Beltran ◽  
Tuula Tuhkanen ◽  
Joon-Wun Kang
Keyword(s):  
Hydrogen Peroxide ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Industrial Wastes ◽  
Organic Substances ◽  
Ultrapure Water ◽  
Radical Scavengers ◽  
Oxidation Processes ◽  
Radical Intermediates ◽  
Chemical Models

Abstract Advanced oxidation processes (AOPs) have been defined as near-ambient temperature processes that involve the generation of highly reactive radical intermediates, especially the hydroxyl radical. These processes show promise for the destruction of hazardous organic substances in municipal and industrial wastes, in drinking water and in ultrapure water. Three types of AOPs are considered in this paper: catalyzed decomposition of ozone; ozone with hydrogen peroxide (Peroxone); and photolysis of hydrogen peroxide with ultraviolet radiation. Kinetic models for these processes are being developed based on known chemical and photochemical principles. The models take into account measured effects of radical scavengers such as bicarbonate; dose ratios of the oxidants or UV intensity; pH; and the presence of generic radical scavengers. The models are used to discuss two cases: oxidation of parts-per-million levels of nitrobenzene with ozone, Peroxone and peroxide/UV and oxidation of naphthalene and pentachlorophenol with peroxide/UV.

scholarly journals Industrial diagnostics system using gamma radiation

Nukleonika ◽  
2015 ◽  
Vol 60 (3) ◽  
pp. 633-636
Author(s):  
Adrian Jakowiuk ◽  
Łukasz Modzelewski ◽  
Jan Pieńkos ◽  
Ewa Kowalska
Keyword(s):  
Early Detection ◽  
Ionizing Radiation ◽  
Gamma Radiation ◽  
Technical Condition ◽  
Remedial Action ◽  
Diagnostics System ◽  
Detection And Localization ◽  
Useful Lifetime ◽  
Gamma Scanning ◽  
Methods Of Measurement

Abstract During the operation of large industrial installations, a very important task is to maintain the proper technical state. In the event of an emergency, it is vital to locate the place of occurrence as soon as possible. In solving this type of problem, it often helps to apply the methods of measurement associated with ionizing radiation. One of these methods is the gamma scanning. The purpose of this type of measurement is the detection and localization of disturbance of technological processes which may result in incorrect decomposition the fl owing medium and workpiece (sediments, congestion) as well as damage to the internal constructions. A particularly: (i) preventive diagnosis - early detection of installation failure; (ii) rationalization of repairs and renovations - to determine the need to take or not to take remedial action; (iii) quick and precise installation inspections - to gain knowledge of the technical condition and technological installations; (iv) indication of worn parts and posing a threat - diagnostics of the technical condition installation; (v) forecasting the useful lifetime of equipment.

Role of hydroxyl radical scavengers dimethyl sulfoxide, alcohols and methional in the inhibition of prostaglandin biosynthesis

1976 ◽  
Vol 11 (4) ◽  
pp. 599-607 ◽  
Author(s):  
Rao V. Panganamala ◽  
Hari M. Sharma ◽  
Richard E. Heikkila ◽  
Jack C. Geer ◽  
David G. Cornwell
Keyword(s):  
Hydroxyl Radical ◽  
Dimethyl Sulfoxide ◽  
Radical Scavengers ◽  
Prostaglandin Biosynthesis ◽  
Hydroxyl Radical Scavengers

New Aspects of Radiotherapy in Rheumatoid Arthritis Biomarker: Radio Sensitivity Response to Acute Ionizing Radiation Induces Cell Characteristic Reprogramming and Enhanced Cytokine Release of In Vitro Activated Macrophage Cell Line (RAW 264.7)

2021 ◽  
Author(s):  
Zahra Bagheri-Hosseinabadi ◽  
Jaber Zafari ◽  
Fatemeh Javani Jouni ◽  
Hossein Abbasinia ◽  
Mitra Abbasifard
Keyword(s):  
Rheumatoid Arthritis ◽  
Radiation Therapy ◽  
Ionizing Radiation ◽  
Gamma Radiation ◽  
Inflammatory Disease ◽  
Raw 264.7 ◽  
Macrophage Cell Line ◽  
Macrophage Cell ◽  
Apoptotic Genes

Abstract The response of biological systems to various types of radiations have many ambiguous dimensions. Among ionizing radiations, in vitro external gamma radiation therapy has mostly studied as model to declare the biological system challenges with radiation effects. Cell/organism exposure to gamma radiation, caused cascade of ionization events such as severe irreversible biological damages. However, the biological responses and oxidative stress related mechanisms under acute radiation conditions poorly understood in inflammatory systems. Following study tried to give a model about ionizing radiation effect on the macrophage that had a key role in inflammation mechanisms; to evaluate the impact of radiotherapy approach for inflammatory disease as rheumatoid arthritis. To this aim, Macrophage cell line (RAW 264.7) culture, exposed to different doses of gamma radiation (0,4, 6, 8, 10 Gy). Cell viability, apoptosis, cell cycle, migration; NO and PGE2 production; expression of pro-inflammatory and apoptotic genes and cytokine secretion of macrophages was also evaluated.The results showed that gamma treatment, at 4 Gy radiation, have slight effect on macrophage characteristics and cytokine secretion pattern. Versus, higher doses (8 and 10 Gy) increased DNA damage, expression of apoptotic genes and secretion of NO and PGE2 cytokines. 6 Gy radiation, the maximum radiation dose, show moderate nondestructive effects and inflammation process modulation. In this study, doses higher than 6 Gy of Gamma radiation caused cell mortality. It seems that 6 Gy Gamma radiation modulate the inflammatory cascade caused by macrophage cell, as a central core of autoimmune inflammatory disease in acute dose radiation therapy.

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