10.1021/es500675x.s001
Daniela Neagu
Daniela
Neagu
Fabiana Arduini
Fabiana
Arduini
Josefina Calvo Quintana
Josefina Calvo
Quintana
Patrizia Di Cori
Patrizia Di
Cori
Cinzia Forni
Cinzia
Forni
Danila Moscone
Danila
Moscone
Disposable
Electrochemical Sensor to Evaluate the
Phytoremediation of the Aquatic Plant <i>Lemna minor</i> L. toward Pb<sup>2+</sup> and/or Cd<sup>2+</sup>
American Chemical Society
2014
Disposable Electrochemical Sensor
LOD
cadmium ion detection
Aquatic Plant Lemna
electrochemical sensor
1 week experiments
2014-07-01 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Disposable_Electrochemical_Sensor_to_Evaluate_the_Phytoremediation_of_the_Aquatic_Plant_i_Lemna_minor_i_L_toward_Pb_sup_2_sup_and_or_Cd_sup_2_sup_/2278972
In
this work a miniaturized and disposable electrochemical sensor
was developed to evaluate the cadmium and lead ion phytoremediation
potential by the floating aquatic macrophyte <i>Lemna minor</i> L. The sensor is based on a screen-printed electrode modified “in-situ”
with bismuth film, which is more environmentally friendly than the
mercury-based sensor usually adopted for lead and cadmium ion detection.
The sensor was coupled with a portable potentiostat for the simultaneous
measurement of cadmium and lead ions by stripping analysis. The optimized
analytical system allows the simultaneous detection of both heavy
metals at the ppb level (LOD equal to 0.3 and 2 ppb for lead and cadmium
ions, respectively) with the advantage of using a miniaturized and
cost-effective system. The sensor was then applied for the evaluation
of Pb<sup>2+</sup> or/and Cd<sup>2+</sup> uptake by measuring the
amount of the heavy metals both in growth medium and in plant tissues
during 1 week experiments. In this way, the use of <i>Lemna minor</i> coupled with a portable electrochemical sensor allows the set up
of a model system able both to remove the heavy metals and to measure
“in-situ” the magnitude of heavy metal removal.