A kinetic approach on the estimation of iron uptake by Apium nodiflorum plants

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dc.contributor.author Vlyssides, AG en
dc.contributor.author Bouranis, DL en
dc.date.accessioned 2014-06-06T06:43:35Z
dc.date.available 2014-06-06T06:43:35Z
dc.date.issued 1998 en
dc.identifier.issn 00103624 en
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-0031897947&partnerID=40&md5=348e187bb64729ea18092c3897c1735d en
dc.subject.other Apium nodiflorum en
dc.title A kinetic approach on the estimation of iron uptake by Apium nodiflorum plants en
heal.type journalArticle en
heal.publicationDate 1998 en
heal.abstract A kinetic approach was developed to indicate the inherent capacity of aquatic plants to absorb heavy metals. The concept was based on the hypothesis that heavy metal uptake by plants follows a first-order mathematical model depending on the heavy metal concentration in the biomass of this plant. This method enabled the evaluation of two parameters: (i) the specific metal uptake rate (k) and (ii) the maximum specific content (E(pl,∞)) of this metal in the aquatic plant. The specific uptake rate coefficient of the metal depended upon the concentration of the metal in the liquid phase, as can be seen from a Michaelis-Menten-type equation. This equation has two constants: (i) a maximum specific metal uptake rate (k(max)) and (ii) a K(s) coefficient. The maximum specific uptake rate coefficient was useful in the evaluation of the ability of different aquatic plants to absorb specific heavy metal, as well a in the evaluation of the selectivity of absorption between two or more metals by the plant. The maximum specific heavy metal content can be used for quantitative evaluation of an aquatic plant's ability to select this heavy metal. The ability of an aquatic plant to clean its aquatic environment from the metal can be evaluated in terms of the K(S)-coefficient. An example of this kinetic approach is given by using Apium nodiflorum. Experimental data from an aquatic system of Apium nodiflorum were collected and applied to the proposed kinetic approach for the estimation of parameters E(pl,∞), k(max) and K(S) of the proposed kinetic models, whereas the adequacy of the model was examined by simulating a real process and comparing the predicted and measured values using χ2-test. en
heal.journalName Communications in Soil Science and Plant Analysis en
dc.identifier.issue 5-6 en
dc.identifier.volume 29 en
dc.identifier.spage 561 en
dc.identifier.epage 573 en

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