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    The effect of waste water on root growth and mitosis in onion (Allium cepa) root apical meristem
    (Asian Network for Scientific Information, 2006) Dane F.; Ekici N.; Aktaş Y.K.
    In this study, the phytotoxic and genotoxic effects of waste waters and also mitotic index were investigated in onion (Allium cepa) root tip cells during germination. For this aim, samples of water from effluent channels of Olmuksa-paper, paddy and Textile-thread Factories were used in Edirne-Turkey on March 2002. The mineral content of the effluent was monitored by flame AAS and pH values of samples were measured. Tap water was used as control. The mitotic frequency of the onion root tip meristematic cells increased in samples of water from effluent channels. On the basis of present findings it may concluded that low concentrations of minerals in waters of effluent channels of textile-thread, paddy and Olmuksa-paper mill has some positive effects on root growth and mitotic divisions in onion root tip cells. © 2006 Asian Network for Scientific Information.
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    The extraction of Zn(II) and Cu(II) from hydrochloric acid solutions by trioctylamine in methyl isobutyl ketone, isoamyl acetate and diethyl ether
    (2005) Aktaş Y.K.; Ibar H.
    The extraction of Zn(II) and Cu(II) from hydrochloric acid solutions has been investigated using trioctylamine in methyl isobutyl ketone (MIBK), diethyl ether (DEE) and isoamyl acetate (IAA). As a result, it was found that the extraction efficiency for Zn(II) and Cu(II) of MIBK, DEE and IAA is in the order DEE > IAA > MIBK. The batch method was used for the extraction of Zn(II) and Cu(II). The method was applied to the analysis of the elements studied in waste water. In addition, the back extraction of elements was studied. The influence of foreign ions on the extraction of Zn(II) and Cu(II) was investigated. Blank values were low and recoveries were 99.4% and 77.1% for Zn(II) and Cu(II), respectively, at 95% confidence level. Detection limits (3 ?) were 2.3 ?g·L-1 for Zn and 0.05 ?g·L-1 for Cu(II).