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Leaflets of six collected legume species including Alhagi camelorum Fisch., Cercis siliquastrum L., Glycyrrhiza glabra L., Medicago sativa L., Robinia peseudoacacia L., and Sophora alopecuroides L. from an aluminum reduction plant area in Iran were analyzed for presence of toxic aliphatic nitro compounds. In addition, studies were conducted to determine fluoride (Fl) levels in these plants. Controls were from 10 km distance of the factory. Results showed high Fl concentration in all polluted samples. Phytochemical changes in all polluted leaves, with the exception of C. siliquastrum and G. glabra, were observed with presence of nitrotoxins. [ABSTRACT FROM AUTHOR]

The effects of fluoride (Fl) emission, from an aluminum (Al) reduction plant in Iran, on the concentration of Fl in six legume species were studied. In addition, the influence of Fl on leaf flavonoids was investigated. Determination of Fl in collected plants (Alhagi camelorum Fisch., Cercis siliquastrum L., Glycyrrhiza glabra L. Medicago sativa L., Robinia peseudoacacia L., and Sophora alopecuroides L.) from the factory area was performed using a Fl ion-selective electrode. Identification of flavonoids in the samples was obtained by two-dimensional paper chromatography (2-D PC) and thin layer chromatography (TLC). Controls were obtained from plants located 10 km distance from the factory. Results showed high Fl concentration in all polluted samples. Phytochemical changes in polluted leaves were observed with appearance or disappearance of some flavonoids. [ABSTRACT FROM AUTHOR]