Current Analytical Chemistry - Volume 13, Issue 1, 2017

Electrochemical techniques are powerful tools for trace analysis of important food, clinical and environmental compounds in real samples. In between electrochemical methods, stripping voltammetry technique is a very selective and highly sensitive method for the determination of nanomolar level of electroactive species in solution. Detection limits for electroactive compounds at sub-ppb concentrations have been r Read More

The interdisciplinary field of materials science involves the discovery and design of new materials. Because of this, materials science has effective interest in the fabrication of biosensors/ nanosensors. In this review, we have focused on molecular imprinted electrochemical sensors based nanomaterials such as graphene oxide/carbon nanotubes molecular imprinting has been very effective method to achieve high selectivit Read More

Aptamers are specific oligonucleotides selected invitro which bind to target molecules with high affinity and specificity like antibody-antigen interactions. For that reason, these synthetic oligonucleotides also known as “artificial antibodies”, offer great potential as bio-recognition elements in biosensors. Electrochemical sensors, as biosensors, are very attractive to early diagnosis of cancer as these devices are fast, portable Read More

Background: Determination of heavy and transition metal ions, like lead, especially with the aid of portable, user fiendly, and accurate and precise devices has long been an interesting area in analytical applications, especially in the case of environmental and biological samples. In this light, and given the facility, speed, accuracy, precision and also moderate costs of electrochemical monitoring techniques, these methods have be Read More

The electrochemical bahaviour of cysteamine (CA) has been investigated by synergic effect of acetylferrocene (AF) and NiO/CNT nanocomposite at a surface of carbon paste electrode (AF/NiO/CNTs/CPE). Voltammetric techniques were used to investigate the suitability of AF/NiO/CNTs/CPE for the electrocatalytic oxidation of CA in pH=7.0 as a suitable condition in voltammetric analysis. AF/NiO/CNTs/CPE shows a dynamic range to el Read More

Background: Benserazide is an important catechol drug that has been comprehensively used as an irreversible inhibitor of peripheral aromatic amino acid decarboxylase. It is an important drug with wide application in treatment of Parkinson's disease. Therefore, the determination of this drug is very important in biological samples. Methods: According to importance of BZ in biological and pharmaceutical samples, we focu Read More

Background: Application of room temperature ionic liquids (RTILs) in making potentiometric drug sensors is a new strategy to improve the response mechanism. The response of the sensors generally depends on the polymeric membrane ingredients; amount of sensing material, type of plasticizer and ionic additive. Sensing element of a drug sensor which is the most important component of the membrane can be an ion- Read More

Background: Mercury is a highly hazardous heavy metal which can seriously affect the human health. Many analytical methods such as cold vapor atomic absorption spectroscopy, inductively coupled plasma optical emission spectrometry (ICP-OES), and inductively coupled plasma mass spectrometry (ICP-MS), have been reportedly used for the the determination of mercury in different samples. These techniques analyze Read More

Background: Many instruments have been developed for use in a variety of situations to facilitate the application of nano-based sensors, avoiding expensive and time-consuming procedures. Modified electrochemical methods are precise and sensitive analytical methods with excellent limits of detection. In these systems the analytical information is obtained from the electrical signal that results from the interaction of the drug Read More

Vanillin (VAL) is an important flavoring agent in foods, beverages, and pharmaceuticals samples. It is a more atractive food additive as flavor enhancer. Therefore, determination of VAL is important in food industrials. A new method for the determination of VAL in food samples was developed by sqaure wave voltammetry using carbon paste electrode modified with CuFe2O4 nanoparticles and ionic liquid as a working Read More