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Statements

Subject Item
n2:RIV%2F60162694%3AG44__%2F11%3A00002513%21RIV12-MO0-G44_____
rdf:type
skos:Concept n20:Vysledek
rdfs:seeAlso
http://www.electrochemsci.org/papers/vol6/6125980.pdf
dcterms:description
Lead as one part of heavy metals group pose a detrimental risk to human health and the environment due to its toxicity, even exposure to minuscule quantities can be life threatening. Levels of lead are not stable in the environment and vary according to industrial production, urbanization, climate changes and many other factors. It is not surprising that rapid, sensitive and simple analytical determination of metal ions in environment is very important. Electrochemical techniques are one of the best methods for detecting metals due to their low cost, high sensitivity and portability. The aim of this study was to compare various microwave digestion procedures for lead(II) ions isolation in vultures samples of vultures available in very small quantities (followed by differential pulse voltammetry as a detection method. We found that the combination of HNO3 and H2O2 is advantageous for the resulting electrochemical response. To determine the effect of mineralization on the height of the lead(II) ions peak, eight different mineralization programs were tested. It clearly follows from the results obtained that 200 W power for 30 min. is the most optimal for mineralisation of vultures' samples. In the following part of the study, the influence of four different locations of samples in the rotor of used microwave system was investigated. Under the optimized conditions, samples of blood and eggs from vultures poisoned by lead were prepared and analysed. Three types of working electrodes as hanging mercury drop electrode, carbon paste electrode and screen printed electrode made of multi-walled nanotubes were employed for this purpose. All three electrodes were sensitive enough to be used for analysis of real samples. Based on the results obtained it clearly follows that the level of lead in intoxicated vultures ranged from 1 to 5 μg/ml of blood. Lead as one part of heavy metals group pose a detrimental risk to human health and the environment due to its toxicity, even exposure to minuscule quantities can be life threatening. Levels of lead are not stable in the environment and vary according to industrial production, urbanization, climate changes and many other factors. It is not surprising that rapid, sensitive and simple analytical determination of metal ions in environment is very important. Electrochemical techniques are one of the best methods for detecting metals due to their low cost, high sensitivity and portability. The aim of this study was to compare various microwave digestion procedures for lead(II) ions isolation in vultures samples of vultures available in very small quantities (followed by differential pulse voltammetry as a detection method. We found that the combination of HNO3 and H2O2 is advantageous for the resulting electrochemical response. To determine the effect of mineralization on the height of the lead(II) ions peak, eight different mineralization programs were tested. It clearly follows from the results obtained that 200 W power for 30 min. is the most optimal for mineralisation of vultures' samples. In the following part of the study, the influence of four different locations of samples in the rotor of used microwave system was investigated. Under the optimized conditions, samples of blood and eggs from vultures poisoned by lead were prepared and analysed. Three types of working electrodes as hanging mercury drop electrode, carbon paste electrode and screen printed electrode made of multi-walled nanotubes were employed for this purpose. All three electrodes were sensitive enough to be used for analysis of real samples. Based on the results obtained it clearly follows that the level of lead in intoxicated vultures ranged from 1 to 5 μg/ml of blood.
dcterms:title
Electrochemical analysis of lead toxicosis in vultures Electrochemical analysis of lead toxicosis in vultures
skos:prefLabel
Electrochemical analysis of lead toxicosis in vultures Electrochemical analysis of lead toxicosis in vultures
skos:notation
RIV/60162694:G44__/11:00002513!RIV12-MO0-G44_____
n4:aktivita
n18:S n18:P n18:Z
n4:aktivity
P(ED1.1.00/02.0068), P(GA102/08/1546), S, Z(MSM0021622412), Z(MSM6215712402)
n4:cisloPeriodika
12
n4:dodaniDat
n6:2012
n4:domaciTvurceVysledku
n17:3876284
n4:druhVysledku
n16:J
n4:duvernostUdaju
n5:S
n4:entitaPredkladatele
n12:predkladatel
n4:idSjednocenehoVysledku
197018
n4:idVysledku
RIV/60162694:G44__/11:00002513
n4:jazykVysledku
n11:eng
n4:klicovaSlova
automated electrochemical detection; bioremediation; differential pulse voltammetry; heavy metal; diagnosis of toxicosis; metallothionein; spectrophotometry
n4:klicoveSlovo
n8:diagnosis%20of%20toxicosis n8:automated%20electrochemical%20detection n8:metallothionein n8:bioremediation n8:spectrophotometry n8:differential%20pulse%20voltammetry n8:heavy%20metal
n4:kodStatuVydavatele
CS - Státní svaz Srbska a Černé Hory
n4:kontrolniKodProRIV
[7F1756A961D2]
n4:nazevZdroje
International Journal of Electrochemical Science
n4:obor
n14:CE
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
13
n4:projekt
n19:GA102%2F08%2F1546 n19:ED1.1.00%2F02.0068
n4:rokUplatneniVysledku
n6:2011
n4:svazekPeriodika
6
n4:tvurceVysledku
Pohanka, Miroslav Krejčová, Ludmila Hubálek, Jaromír Prasek, Jan Beklová, Miroslava Pikula, Jiří Sochor, Jiří Kizek, René Hájková, Pavlína Trnková, Libuše Adam, Vojtěch Hynek, David Vrba, Radimír
n4:wos
000297571400003
n4:zamer
n13:MSM0021622412 n13:MSM6215712402
s:issn
1452-3981
s:numberOfPages
31
n15:organizacniJednotka
G44