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   determination of heavy metal ions by an amperometric biosensor based on glucose oxidase immobilized onto single-walled carbon nanotubes/nile blue nanocomposite  
   
نویسنده varjovi mirali jahangirzadeh ,sabzi reza emamali ,borghei s. mehdi
منبع journal of the iranian chemical society - 2018 - دوره : 15 - شماره : 8 - صفحه:1765 -1774
چکیده    An enzymatic electrochemical biosensor was prepared based on glucose oxidase (god) immobilized on single-walled carbon nanotubes/nile blue (nb–swcnts) nanocomposite cross-linked with glutaraldehyde on graphite electrode. the function of glucose biosensor is based on the electrocatalytic reduction of h2o2 generated by the reaction of the enzyme with glucose molecules. the biosensor was characterized by fourier transform infrared (ftir) spectroscopy, emission scanning (fesem), uv–vis spectrometry, and voltammetric and amperometric methods. parameters influencing the performance of the biosensor, namely ph and applied potential, were optimized. inhibition was carried out for the detection of hg2+ and pb2+ species under optimized condition. inhibition investigations showed that the type of inhibition for both the abov- mentioned heavy metal ions were reversible and competitive.
کلیدواژه glucose ,measurement ,amperometric ,voltametric ,enzyme activity inhibition
آدرس sharif university of technology, department of environmental process engineering, iran, urmia university, faculty of chemistry, institute of biotechnology, department of analytical chemistry, iran, sharif university of technology, department of environmental process engineering, iran
 
     
   
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