Hydrology: Current Research

Mohammad Hossein Fatemi

Publications

• Research Article
  Chemometrics Optimization of Volatile Organic Compounds Analysis in Water by Static Headspace Gas Chromatography Mass Spectrometry
  Author(s): Mohammad Hossein Fatemi, Hossein Kouchakpour and Hanieh MalekzadehMohammad Hossein Fatemi, Hossein Kouchakpour and Hanieh Malekzadeh
  
  Static headspace coupled with gas chromatography-mass spectrometry was applied to extraction and analysis of volatile organic compounds in water samples. The effects of various factors affecting on the extraction efficiency including: the extraction temperature, extraction time, salt concentration and stirring speed were carried out by means of a 24 full factorial design. It was found that the effects of extraction temperature and salt concentration were signi?cant. Then, a central composite design was performed to optimize the level of these factors. The optimal headspace conditions were achieved when the vials were heated under 88°C and 29% w/w addition of salt. At optimum operating conditions, analytical figures of merit of method such as linearity (0.9962-0.9996), repeatability (1.2-12.13%), detection limits (0.1-4.9 μg.L−1) and linearity dynamic range (10-1000 .. Read More»
  DOI: 10.4172/2157-7587.1000153

  Abstract PDF