2006
Analysis of tissues of vertebrates and earthworms treated by Bromadiolone
ADAM, Vojtěch, Miroslava BEKLOVÁ, René KIZEK, Soňa KŘÍŽKOVÁ, Radka MIKELOVÁ et. al.Základní údaje
Originální název
Analysis of tissues of vertebrates and earthworms treated by Bromadiolone
Název česky
Analýza tkání z hrabošů a žížal živených bromadiolonem
Autoři
ADAM, Vojtěch (203 Česká republika), Miroslava BEKLOVÁ (203 Česká republika), René KIZEK (203 Česká republika), Soňa KŘÍŽKOVÁ (203 Česká republika), Radka MIKELOVÁ (203 Česká republika, garant), J. PIKULA (203 Česká republika), Michal SVOBODA (203 Česká republika) a Veronika ŠUPLKOVÁ (203 Česká republika)
Vydání
prvn. Hamburg, 34th International Symposium on Environmental Analytical Chemistry, ISEAC 34, od s. A29-A29, 405 s. 2006
Nakladatel
International Association of Environmental Analytical Chemistry2006
Další údaje
Jazyk
angličtina
Typ výsledku
Stať ve sborníku
Obor
10405 Electrochemistry
Stát vydavatele
Německo
Utajení
není předmětem státního či obchodního tajemství
Organizační jednotka
Přírodovědecká fakulta
Klíčová slova anglicky
Electrochemistry; Bromadiolone; Lanirat; HPLC-ED; glassy carbon electrode; cyclic voltammetry;
Štítky
Změněno: 29. 6. 2006 15:17, Ing. Radka Mikelová, Ph.D.
V originále
Bromadiolone (3-(3-(4'-brom-1,1'-bifenyl-4-yl)-3-hydroxy-1-fenylpropyl)-4-hydroxy-coumarine) is commonly used rodenticide, which is commercially available as Lanirat. It acts as anticoagulant in very low concentration and its effect is cumulative. Its residues in nature can be cause of death of both house and wild animals and not only in direct, but in consequent consuming. The main organ damaged during deposition and metabolizing of these substance is liver. In our work we developed a new way of bromadiolone detection based on use of high-performance liquid chromatography with electrochemical detection (HPLC-ED). Our method is quick, sensitive and allows us to determine a trace amount of bromadiolone in biological matrix. Moreover we are able to monitor the incidence of using of bromadiolone on non target fauna. Our analysis by high-performance liquid chromatography was carried out on CoulochemIII analyser (ESA, Inc.). Hydrogenpaladium electrode, auxiliary carbon electrode and working glassy carbon electrode were placed in electrochemical cell of volume of 50 ľl referent. We used acetate buffer (pH = 4.0):acetonitrile in ratio of 40/60 (v/v) as the most suitable mobile phase for determination of the compound of interest. Sample (5 ľl) was injected. Prior to analysis in flow system we have studied the basic electrochemical behaviour of bromadiolone by cyclic voltammetry on Autolab analyser (EcoChemie, Netherlands) connected with VA-Stand 663 (Metrohm, Schwitzerland). On the base of experimental results from cyclic voltammetry we designed optimal conditions for flow analysis of bromadiolone. From relation of signal height on applied potential we construed a hydrodynamical voltammogram. On its base we choose an optimal potential applied on electrodes (836 mV). Flow rate of mobile phase and the content of methanol influenced the electrochemical response significantly. We found out that our method is sensitive and allows us to determine tens of nanograms of bromadiolone per ml. We utilized this optimized method to determine the amount of bromadiolone in real samples of tissues of animal which eaten bromadiolone in different forms. Earthworms (Eisenia fetida), were kept in presence of five granules of rodenticide Lanirat G in five litres of artificial soil (88 ěg/l). These earthworms were used as a feed for field mice (Microtus arvalis). Other group of field mice was fed by defined amount of bromadiolone. Earthworms kept without rodenticide and field mice fed with non-treated earthworms or fed by usual feed for rodents served as a control. We analysed the content of bromadiolone in earthworms and in liver of these field mice. Then we applied this method to determine the bromadiolone content in liver and stomach content of three hares (Lepus europaeus), which were found death in area where bromadiolone was applied. We found out that one them died by bromadiolone.
Česky
Analýza tkání z hrabošů a žížal živených bromadiolonem
Návaznosti
GP525/04/P132, projekt VaV |
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MSM0021622412, záměr |
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