The mutagenicity of refuse leachate from a municipal incinerator was studied by liquid rec-assay and Ames assay. Volatile components were found to be negative, and nonvolatile components positive, in the Ames assay and the leachate was found to have DNA-damaging capacity in the liquid rec-assay with S-9 mix. PAHs derived from tobacco ash and carbonyl compounds generated by the putrefaction of foods were confirmed to be main contributors to DNA-damaging capacity and mutagenicity in refuse leachate.
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http://dx.doi.org/10.1016/0048-9697(89)90027-2 | DOI Listing |
Environ Sci Technol
November 2024
State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P. R. China.
The adverse conditions of the garbage incineration process can lead to the generation of dioxins and polycyclic aromatic hydrocarbons (PAHs). This study aimed to investigate the removal efficiency and possible cross-coupling effect of 1,2,3,4-tetrachlorodibenzo--dioxin (1,2,3,4-TCDD) and six coexisting low-molecular-weight PAHs during photodegradation on the fly ash surface. Due to their higher photoreactivity and light-shielding effect, the six PAHs exhibited inhibitory effects on the photodegradation of 1,2,3,4-TCDD, causing a reduction of 4.
View Article and Find Full Text PDFExp Oncol
October 2024
Tu Du Clinical Research Unit, Tu Du Hospital, Ho Chi Minh City, Vietnam.
Georgian Med News
October 2023
Onkoderma - Clinic for Dermatology, Venereology and Dermatologic Surgery, Sofia, Bulgaria.
Drug-induced Nitrosogenesis/Carcinogenesis turns out to be a ubiquitous, pervasive, large-scale, poorly controllable concept for the academic community, which underlies the long-term, permanent modification of the human genome by contact with nitrosamines/NDSRIs, which ultimately leads to the generation of diverse cancers, but also melanoma in particular. The discovery of a (currently) unclassifiable number of nitroso derivatives/genome modifiers in the most commonly distributed drugs worldwide (in about 300 preparations according to the FDA/includes beta blockers/bisoprolol/nebivolol and ACE inhibitors/perindopril), their forced tolerability, attributed as a necessity or lack of alternative also to the present (but also to future periods), and their proven carcinogenicity (already 70 years ago), suggest a kind of creepy form of experiment to which public health is subjected worldwide. The creation of a universal nitroso-comfort of pharmaceutical companies and the regulation of a permanent intake of carcinogens in drugs for years to come, but also decades back, suggest possible cartel agreements between the regulation/distribution unit and that of production cycles.
View Article and Find Full Text PDFJ Environ Manage
November 2023
Department of Chemical Engineering, Indian Institute of Technology Guwahati, Assam, 781039, India. Electronic address:
E-waste comprising plastics causes serious ecological problems due to low degradability, but it is capable of producing a high amount of energy by thermochemical conversion. Therefore, the current study focuses on generating clean syngas through plasma gasification of acrylonitrile butadiene styrene (ABS) based computer keyboard plastic waste (CKPW) using CO as a gasifying agent. The effect of feed rate, gas flow rate and plasma power on the syngas composition was studied.
View Article and Find Full Text PDFWater Sci Technol
January 2023
Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China E-mail:
Landfill leachate, because of its complex components, may cause pipe clogging during its collection and transportation, and pose a threat to the environment. This study considers two typical drainage pipe materials, i.e.
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