Read e-book online Ciba Foundation Symposium 175 - Environmental Change and PDF

ISBN-10: 0470514434

ISBN-13: 9780470514436

ISBN-10: 0471938424

ISBN-13: 9780471938422

Discusses these facets of environmental switch which would have direct or oblique results on human future health. contains discussions on water pollutants, agricultural toxins, genetic disorder and unique tropical ailments in addition to human nutrients and inhabitants development.

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An overview of chemical compounds and chemical species of importance in environmental chemistry either as pollutants or as reactive intermediates is given in Table 2. The future In the future, major industries, corporations and businesses, which are competing within a global economy, will have to recognize the importance of maintaining a ‘green’ environmental perspective. H,0 CH3CI, CF,CI,, CFCl,, CCI,, C1, HCI, CH3CC13, C10, OCIO, Cl02, HOC1, ClONO,, C1,0,, CH3Br, Br, BrO, HBr, BrONO, 03, Oxygen Carbon oxides C1 carbon Hydrocarbons Nitrogen oxides Sulphur Carbonyls Metals Radionuclides Isotopes Radicals HZS, (CH;);S, (kH3)2S,, CHSSH, CS,, COS, SO,, CH,S03H, HOCH,SO,H, H,SO,, HSO,, H,S04, SO,*H,O, HSO; HOCH2(CH2),,CH0,R(CHJ,COOH, RCHO, H2CZO4, (HCO),, RIGOR,, R,COCOR, Fe, Cr, Mn, Cu, Pb, Pt, Pd, V, Zn, Cd, Ir, Rh, M 2 + , Caz+, MnZ+,Fe(III)/Fe(II), Cr(VI), Na+, Cu(II)/Cu(I), Ti, K + =,Ra, *,Kr.

Hoffmann: Vegetation takes up some chemicals, but the compounds we are concerned with are semi-volatile, so unless they’re biologically attached, as dioxin is to a specific receptor, they partition between the gas and solid phases. The primary thermodynamic driving force is to the atmosphere. Elliott: The issue of human exposure to dioxin mainly concerns food chain exposure and not local air pollution. Klein: We consider that the key problem is not the physical chemistry of transfer from soil to water but transfer from the soil to the root or the leaf of a plant, followed by transformation within the plant and passage along the food chain to humans.

Doll & Pet0 (1981) have shown in epidemiologicalstudies on toxic substances and cancer that perhaps 1% of cancers can be ascribed to toxic chemical substances. This is still fairly important. Hoffmann: Bruce Ames, who has done a lot of work in this area, believes that the majority of chemical carcinogens entering the body do so in food. For example, in his mutagenicity studies, he shows a strong correlation between aflatoxin present in peanut butter and the mutagenicity of peanut butter, which Chemical pollution: past, present and future 35 is a staple of the USA diet.

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Ciba Foundation Symposium 175 - Environmental Change and Human Health


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