List of Articles نانولوله کربنی کربوکسیله

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  1 - Effective removal of mercury (II) from environmental aqueous samples using carbon nanotubes carboxylated by dispersive solid-phase extraction method
  Ali Moghimi Milad Abniki Mohammd Yari
  A very small amount of heavy metals such as mercury (II) can disrupt brain expansion and motor disabilities and generates cognitive. This study aimed to use a simple and rapid method to remove and measure small amounts of mercury (II) ions in aqueous samples. In the pre More

  A very small amount of heavy metals such as mercury (II) can disrupt brain expansion and motor disabilities and generates cognitive. This study aimed to use a simple and rapid method to remove and measure small amounts of mercury (II) ions in aqueous samples. In the present method, carbon nanotubes carboxylated have been used to improve the removal and preconcentration of mercury (II). Parameters such as extraction pH, amount and type of eluent solvent, extraction time, ion effect, etc. have been optimized for the pre-concentration of mercury (II) by the adsorbent. Absorption measurements were performed to estimate mercury (II) using a flame atomic absorption spectrometer. The results showed the proper efficiency of this method in the adsorption of mercury (II) ions.The parameter of concentration, level of detection (LOD) of this procedure, and relative standard deviation test (RSD %) achieved as 20.83, 6 µg L-1, and 1.16%, respectively. The dispersive solid-phase extraction method using carbon nanotubes carboxylated adsorbent indicates suitable of the reproducibility, level of detection (LOD), and concentration factor for the determination of mercury (II), also this method was introduced as an efficient method for the removal of mercury (II) ions from environmental aqueous samples. Manuscript profile
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  2 - Fabrication of choline oxidase enzyme-based nanobiosensor for the detection of diazinon and comparing its performance with the high performance liquid chromatography
  اقدس بنائی ناهید پارسافر جلیل بدراقی
  Organophosphorus compounds enter the environment naturally or after human use as pesticides or chemical fertilizers, and ultimately enter the food chain of organisms. Due to their undesirable effects, it is absolutely necessary to detect these toxins at very low concent More

  Organophosphorus compounds enter the environment naturally or after human use as pesticides or chemical fertilizers, and ultimately enter the food chain of organisms. Due to their undesirable effects, it is absolutely necessary to detect these toxins at very low concentrations before they enter the life cycle. Biosensors are suitable tools for detecting these toxins. In this study, a mono-enzyme biosensor based on inhibiting the cholineoxidase enzyme with its immobilization on a modified electrode with carboxylate carbon nanotubes was fabricated and in the presence of 1mM enzyme substrate )choline chloride(, the minimum detection limit for diazinon was obtained (0.56 μM( and two linear ranges (1.5- 2.4 μM and 5.5-17.5 μM( was observed. The detection of low concentrations of diazinon by this biosensor and high performance liquid chromatography )HPLC( were compared. The result of the biosensor had 3.5% error relative to HPLC Manuscript profile