The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary

The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name.

  
       
         
    STUDIA CHEMIA - Issue no. 2 / 2015  
         
  Article:   DEVELOPMENT OF MULTIWALLED CARBON NANOTUBES BASED SOLID PHASE EXTRACTION FOR THE DETERMINATION OF TRACE LEVEL OF Mn(II) AND Sn(IV) IN RIVER WATER SAMPLES.

Authors:  . 		 
       
         
  Abstract:   This paper reports a multiwalled carbon nanotubes (MWCNTs) modified with 3-amino-7-dimethylamino-2-methylphenazine (Neutral Red, NR) as a new solid phase extractor for determination of ultra trace amounts of Mn(II) and Sn(IV). The metal ions were retained on -column filled with the solid phase at a flow rate of 3.0 mL/min. The retained metal ions were eluted with 3 mol L−1 solution of HCl and measured by flame atomic absorption spectroscopy (FAAS). The effect of different variables such as, sample pH, concentration of 3-amino-7-dimethylamino-2-methylphenazine (Neutral Red, NR), sample flow rate, eluting solution and the effect of interfering ions have been investigated systematically. The calibration graph was linear in the range of 0.4-100 µg L−1 and 0.6-150 for Mn(II) and Sn(IV), respectively. Under optimized conditions, the limit of detections (LOD) were 0.12 and 0.16 µg L−1 for Mn(II) and Sn(IV), respectively. The method was used for determination of target metal ions in some water samples from rivers located in industrial and nonindustrial areas.

Keywords: Solid phase extraction; 3-amino-7-dimethylamino-2-methylphenazine (Neutral Red, NR); Multiwalled carbon nanotubes; river water samples; Flame atomic absorption spectrometry, Mn(II) AND Sn(IV)
 
         
     
         
         
      Back to previous page