نتایج جستجو برای: organotins

تعداد نتایج: 110  

2005
Atanas G. Atanasov Lyubomir G. Nashev Steven Tam Michael E. Baker Alex Odermatt

Organotins, important environmental pollutants widely used in agricultural and industrial applications, accumulate in the food chain and induce imposex in several marine species as well as neurotoxic and immunotoxic effects in higher animals. Reduced birth weight and thymus involution, observed upon exposure to organotins, can also be caused by excessive glucocorticoid levels. We now demonstrat...

Journal: :Naturwissenschaften 1991

2001
Michelle Allsopp David Santillo

This study investigated the composition of PVC flooring with respect to certain chemical additives, namely phthalate plasticisers and organotins. The study included analysis of five PVC flooring samples that were available for retail in the UK. Samples were found to contain high levels of several organotin compounds, in particular DBT (37.7 to 569 ppm) and TBT (128 to 17,940 ppb). Two phthalate...

2001
ENRICO BERTOLI ANNARINA AMBROSINI GIOVANNA ZOLESE ROSITA GABBIANELLI DONATELLA FEDELI GIANCARLO FALCIONI

This work reports on studies concerning with the interaction of important environmental contaminants, such as organotins, with model and biological systems. Organometallic compounds are synthesized and used for applications in industry and agriculture. Moreover, some organometallics can be directly formed in the environment by the action of microbial agents on inorganic precursors. Because of t...

Journal: :Chemical communications 2009
Shun-Hua Li Fei-Ran Chen Yue-Feng Zhou Jia-Ni Wang Hong Zhang Jin-Gou Xu

A simple Schiff base, 2-(2',4'-dihydroxybenzylidene)aminobenzeneboronic acid, was found to show a fluorescence enhancement in the presence of hydroxylated organotins in aqueous solution.

2006
Ron Chepesiuk

The worldwide obesity epidemic is usually blamed on overeating and underexercising. But limited evidence has suggested a few environmental contaminants may also be playing a role. Now some of the first detailed evidence implicating organotins, a class of persistent compounds containing at least one tin–carbon bond, has been published in the September 2006 Molecular Endocrinology. A team of U.S....

2007
Annika Björn

M icbial Trsform aion of O rgnotin C om punds uder im uated Ldfill C onitions Liöping 2007 The cycling of tin is a topic of concern because of its anthropogenic entry of organotin compounds into the environment. Special attention is given to the transformation of organotins and the methylation of inorganic tin, since these processes often give rise to more toxic formulations. By far the largest...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 1997
H Kleszcyńska J Hładyszowski H Pruchnik S Przestalski

The effect of trialkyllead and trialkyltin on pig erythrocyte hemolysis has been studied and compared. The results of experiments showed that the hemolytic activity of organoleads increases with their hydrophobicity and follows the sequence: triethyllead chloride < tri-n-propyllead chloride < tributyllead chloride. And similarly in the case of organotins: triethyltin chloride < tri-n-propyltin ...

Journal: :Environmental monitoring and assessment 2013
Jun-Min Gao Ying Zhang Jin-Song Guo Fen Jin Ke Zhang

The occurrence of organotins in the Yangtze River and the Jialing River in the urban section of Chongqing, China and their impact on drinking water waterworks are reported in this study. Water samples were extracted by solid-phase microextraction and measured using a gas chromatograph with mass spectrometer. The results showed that the rivers studied were polluted by both butyltins and phenylti...

2006
Juan Bellas Rolf Ekelund Halldór Pálmar Halldórsson Matz Berggren Åke Granmo

The concentrations of selected trace metals, organotins, polychlorinated biphenyls (PCBs), and polycyclic aromatic hydrocarbons (PAHs) were determined in caged blue mussels (Mytilus edulis) during dredging operations in the Göta Älv Estuary (SW Sweden). Maximum values of pollutants in mussel tissues were found after the dredging started. Our results showed that the dredging caused mobilization ...

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