Results 31 to 40 of about 2,033 (151)

Polychlorinated Dibenzodioxins and Dibenzofurans in Cigarette Smoke - Polychlordibenzodioxine und Polychlordibenzofurane in Cigarettenrauch

Contributions to Tobacco and Nicotine Research, 1990
The paper describes a method for the determination of polychlorinated dibenzodioxins and -furans both in gas phase and in particulate matter of cigarette smoke.
Ball M, Päpke O, Lis A
doaj   +1 more source

Reference materials for the determination of contaminants in milk and milk products

Czech Journal of Food Sciences, 2003
In this review, the latest information is given about the reference materials for the determination of contaminants in milk and milk products. Certified reference materials for the determination of contaminating chemical elements, organochlorine ...
J. Táborský, A. Hejtmánková, J. Dolejšková   +2 more
doaj   +1 more source

Pollutants Transformation During the Regeneration Process of Fluid Catalytic Cracking Catalysts

Angewandte Chemie, Volume 137, Issue 52, December 22, 2025.
Fluid catalytic cracking is the main pollutant source in crude oil refineries due to spent catalyst regeneration. In this work, flue gas pollutants are monitored and coke deposits are identified. Operando and in situ spectroscopy are developed to explore coke species evolution, coupled with online gas infrared spectroscopy to detect pollutant formation.
Jiawei Bian, Robin Vogel, Pengfei Tian, Shuang Yang, Bohan Wang, Hao Ling, Fuzhen Xuan, Feng Ju, Bert M. Weckhuysen   +8 more
wiley   +2 more sources

Formation Characteristics of PCDD/Fs in the Co-combustion and Pyrolysis Process of Coal and Sewage Sludge

Aerosol and Air Quality Research, 2021
Co-combustion technology of coal and sewage sludge (SS) was encouraged and recommended in China. Previous studies most focused on its influence on combustion characteristics, migration characteristics of heavy metals in fly ash, and emission of ...
Mumin Rao, Xiangbo Zou, Ji Ye, Yunfeng Ma, Tieying Mao, Xiaoqing Lin, Xiaodong Li, Jianhua Yan, Shiwei Qin, Cao Kuang   +9 more
doaj   +1 more source

Dioxins and PCBs in Meat – Still a Matter of Concern?

CHIMIA, 2018
Polychlorinated dibenzodioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) summarized as dioxins, as well as polychlorinated biphenyls (PCBs) are persistent, bio-accumulative and toxic environmental contaminants. Over 95% of human exposure
Markus Zennegg
doaj   +1 more source

Combined Flue Gas Cleaning from Persistent Organic Compounds and Nitrogen Oxides in the Multifunction Filter

Chemical Engineering Transactions, 2012
Production of new products is associated with the generation of waste that must be processed in some way. Besides recycling, as another opportunity to processing waste, there is the possibility of energetic utilization.
F. Jedlicka, D. Jecha, L. Bébar, J. Oral, P. Stehlík   +4 more
doaj   +1 more source

The Internal Relation between Quantum Chemical Descriptors and Empirical Constants of Polychlorinated Compounds

Molecules, 2018
Quantum chemical descriptors and empirical parameters are two different types of chemical parameters that play the fundamental roles in chemical reactivity and model development.
Jiangchi Fei, Qiming Mao, Lu Peng, Tiantian Ye, Yuan Yang, Shuang Luo   +5 more
doaj   +1 more source

QSAR modeling of adipose/blood partition coefficients of Alcohols, PCBs, PBDEs, PCDDs and PAHs: A data gap filling approach

Environment International, 2018
Physiologically-based toxicokinetic (PBTK) model has immense role to play in the risk assessment process due to specified mathematical representation of the absorption, Distribution, Metabolism, Excretion and Toxicity (ADMET) of chemicals in diverse ...
Jephthe Jean, Supratik Kar, Jerzy Leszczynski   +2 more
doaj   +1 more source

Update of the risk assessment on dioxins and dioxin‐like PCBs in feed and food

EFSA Journal, Volume 24, Issue 6, June 2026.
Abstract The European Commission asked EFSA to update its 2018 risk assessment on polychlorinated dibenzo‐p‐dioxins and dibenzofurans (PCDD/Fs) and dioxin‐like polychlorinated biphenyls (DL‐PCBs) in feed and food, based on the 2022 WHO Toxic Equivalency Factors (WHO2022‐TEFs).
EFSA Panel on Contaminants in the Food Chain (CONTAM Panel), Helle Katrine Knutsen, Agneta Åkesson, Vasileios Bampidis, Margherita Bignami, Laurent Bodin, James Kevin Chipman, Gisela Degen, Antonio Hernández‐Jerez, Tim Hofer, Christer Hogstrand, Stefano Landi, Jean‐Charles Leblanc, Kyriaki Machera, Evangelia Ntzani, Isabelle P. Oswald, Guido Rychen, Salomon Sand, Katharina Vejdovszky, Barbara Viviani, Jesús del Mazo, Andy Hart, Dieter Schrenk, José Cortiñas Abrahantes, Luisa Ramos Bordajandi, Francesca Riolo, Tuuli Tauriainen, Ron Hoogenboom   +27 more
wiley   +1 more source

Re‐evaluation of sucralose (E 955) as a food additive and evaluation of a new application on extension of use of sucralose (E 955) in fine bakery wares

EFSA Journal, Volume 24, Issue 2, February 2026.
Abstract The present opinion deals with the re‐evaluation of sucralose (E 955) as food additive and with the safety of a proposed extension of use in food category (FC) 7.2 ‘Fine bakery wares’. Based on the available data, no safety concerns arose for genotoxicity of sucralose (E 955) and its impurities and degradation products.
EFSA Panel on Food Additives and Flavourings (FAF), Laurence Castle, Monica Andreassen, Gabriele Aquilina, Maria Lourdes Bastos, Polly Boon, Biagio Fallico, Rex FitzGerald, Maria Jose Frutos Fernandez, Bettina Grasl‐Kraupp, Ursula Gundert‐Remy, Rainer Gürtler, Eric Houdeau, Marcin Kurek, Henriqueta Louro, Patricia Morales, Sabina Passamonti, Monika Batke, Antonios Douros, James Chipman, Riccardo Crebelli, Peter Fürst, Thorhallur Halldorsson, Manuela Mirat, Alicja Mortensen, Matthew Wright, Oliver Lindtner, Stefania Barmaz, Consuelo Civitella, Zsuzsanna Horvath, Sara Levorato, Elena Mazzoli, Josef Daniel Rasinger, Ana Maria Rincon, Camilla Smeraldi, Alexandra Tard, Federica Lodi   +36 more
wiley   +1 more source