Results 121 to 130 of about 27,489 (163)

Polychlorinated Naphthalenes (PCNs)

2000
Polychlorinated naphthalenes (PCNs) have been commercially produced and used mainly in electrical devices, but also for impregnation of wood, paper and textiles to attain waterproofness, flame resistance and protection against insects, molds and fungi. Today, the PCNs are widespread in the environment and are to be regarded as an environmental problem.
Eva Jakobsson
exaly   +2 more sources

Flux estimates and sedimentation of polychlorinated naphthalenes in the northern part of the baltic sea

Environmental Pollution, 2003
The concentrations and fluxes of polychlorinated naphthalenes (PCNs) were measured in surface sediments, and settling particulate matter collected in sediment traps, at two coastal and two offshore sampling stations in the Gulf of Bothnia, northern ...
Bert van Bavel, Mats Tysklind, Dag Broman   +2 more
exaly   +2 more sources

Discrimination between polychlorinated naphthalenes and polychlorinated biphenyls

Journal of Chromatography A, 1978
Abstract Prcedures for the discrimination between polychlorinated biphenyls (PCBs) and polychlorinated naphthalenes (PCNs) taken from the literature are discussed. It is demonstrated that the analysis of mixtures of PCBs and PCNs can conveniently be accomplished by both high-performance liquid and gas chromatography, after their conversion into the ...
U.A.Th. Brinkman, G. De Vries, A. De Kok, A.L. De Jonge   +3 more
openaire   +1 more source

Polychlorinated naphthalenes in polar environments — A review

Science of The Total Environment, 2010
Polychlorinated naphthalenes (PCNs) consist of naphthalene substituted with 1-8 chlorines, yielding 75 possible congeners. They were formerly used in industry, occur at trace levels in commercial PCB mixtures, and have current sources in combustion processes. PCNs are widespread in arctic air with higher levels in the European Arctic.
Terry F, Bidleman, Paul A, Helm, Birgit M, Braune, Geir Wing, Gabrielsen   +3 more
openaire   +2 more sources

Degradation of polychlorinated naphthalene by mechanochemical treatment

Chemosphere, 2013
Polychlorinated naphthalene (PCN) is a hazardous compound that is listed as a new persistent organic pollutants candidate by the United Nations Environment Program. The production, import and use of PCNs are prohibited by the Chemical Substances Control Law in Japan. PCN was milled with calcium oxide as an additive to investigate the feasibility of its
Yugo, Nomura, Sho, Aono, Takashi, Arino, Takashi, Yamamoto, Akihiko, Terada, Yukio, Noma, Masaaki, Hosomi   +6 more
openaire   +2 more sources

Polychlorinated Naphthalenes in Swedish Background Air

Environmental Science & Technology, 2004
Polychlorinated naphthalenes (PCNs) with four to eight chlorines were studied in air collected at two background stations in Sweden, one southerly and one northerly. Air was sampled with a high-volume sampler, and gas-phase adsorbents and filters were analyzed separately. The sum of TeCNs to HxCNs in the gaseous phase ranged between 1 and 10 pg/m3 with
Anna-Lena, Egebäck, Ulla, Wideqvist, Ulf, Järnberg, Lillemor, Asplund   +3 more
openaire   +2 more sources

Polychlorinated naphthalene concentrations in human serum caused by unintentional production and emissions, and potential effects of polychlorinated naphthalenes on thyroid hormones

Science of The Total Environment, 2022
The concentrations of 75 polychlorinated naphthalene (PCN) congeners in 95 human serum samples from the Fengjiang electronic waste dismantling area and Huangyan District in Taizhou City (Zhejiang Province, China) were determined. Thyroid hormone (FT3, FT4, TSH, and TRH) concentrations in the samples were also determined. The total PCN concentrations in
Shijie, Wang, Jingxi, Jin, Chen, Guo, Zhigang, Li, Tong, Xu, Xinyu, Wen, Jicheng, Hu, Ying, Wang, Yongjie, Wei, Jun, Jin   +9 more
openaire   +2 more sources

Acute toxicity of polychlorinated naphthalenes and their effect on cytochrome P450

Human and Experimental Toxicology, 2006
Polychlorinated naphthalenes (PCNs) are able to induce cytochrome P-450-dependent microsomal monooxygenase activities in vivo and in vitro. The aim of this study was to investigate the toxicity of a PCN mixture, and its effect on the levels of cytochrome P-450 in rats.
Anna Kilanowicz, A Sapota
exaly   +3 more sources

Vapor Pressures of the Polychlorinated Naphthalenes

Journal of Chemical & Engineering Data, 1999
The vapor pressures of the supercooled liquid PL for 17 polychlorinated naphthalene congeners were determined as a function of temperature with a gas chromatographic retention time technique. The method was calibrated with vapor pressure data for polychlorinated biphenyls (PCBs) which had been measured by other techniques.
Ying Duan Lei, Frank Wania, Wan Ying Shiu   +2 more
openaire   +1 more source

Formation of polychlorinated naphthalenes from chlorophenols

Proceedings of the Combustion Institute, 2005
Abstract To test the hypothesis that polychlorinated naphthalenes (PCNs) can be formed from chlorinated phenols via cyclopentadienyl radicals in post-combustion gas containing 8% oxygen, the slow combustion of three chlorophenols (CPs) at 600 °C was studied in a laminar flow reactor. Contrary to the a priori hypothesis, different distributions of PCN
James Mulholland, Jae-Yong Ryu
exaly   +2 more sources