2011 - Europe Direct Iasi
2011 - Europe Direct Iasi
2011 - Europe Direct Iasi
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R.32.<br />
Title<br />
Authors<br />
Institution<br />
Description<br />
EUROINVENT <strong>2011</strong><br />
with which thermodynamic and kinetic equations<br />
describing the dynamics of mineral processes and the<br />
chemical and mineralogical analysis accuracy. The<br />
method described in the invention includes<br />
methodological details for each step of work,<br />
specifications about the optim selection way of minerals<br />
equilibriums and inter-phases distribution processes in<br />
relation the type and spatial extent of geological deposits,<br />
guidance on how to achieve the estimations and the<br />
relative imprecision level of them according to<br />
thermodynamic and kinetic models, the applicability limits<br />
of the method, respectively.<br />
Financial support for the studies was provided by the<br />
Ministry of Education and Research from Romania,<br />
ANCS – CNMP, grants PNCDI II no. 52-141 / 2008.<br />
Method for differential determination of speciation and<br />
distribution forms of heavy metals in soils<br />
Dumitru Bulgariu 1, 3 , Laura Bulgariu 2 1, 3<br />
, Constantin Rusu<br />
1<br />
”Al. I. Cuza” University of <strong>Iasi</strong>, Faculty of Geography and<br />
Geology, 2 Technical University Gheorghe Asachi of <strong>Iasi</strong>,<br />
Faculty of Chemical Engineering and Environmental<br />
Protection, 3 Romanian Academy, Filial of <strong>Iasi</strong>, Collective of<br />
Geography<br />
The invention relates to a method of selective separation<br />
and differential determination of types and contents of<br />
heavy metals speciation and distribution forms in soils.<br />
The method can be used at: (i) estimation of direct and<br />
indirect risk potential of heavy metals in vegetables<br />
cultures; (ii) establish real tolerance levels of soil – water<br />
– plants systems towards heavy metals; (iii) determination<br />
of geochemical mobility and effective biodisponibility of<br />
heavy metals in soil – water – plants systems. The method<br />
described in this invention is based on: (i) separation of<br />
heavy metals occurrence forms in soils – by grain-size<br />
fractionation and by magnetic method of soil samples,<br />
followed by the differential separation using sequential<br />
solid-liquid extraction (in 7 steps) coupled with extraction<br />
in aqueous two-phase systems: organic polymer<br />
(polyethylene glycol, polyvinyl alcohol) - inorganic salt<br />
(Na2SO4, K2HPO4); (ii) determination of types and<br />
Innovative Researches<br />
157
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