Dissolved carbon dioxide flotation: An effective way for phase separation in emulsification microextraction method
作者: Saeideh MolaeiAbolfazl SalehVanik GhoulipourShahram Seidi
作者单位: 1Faculty of Chemistry, Kharazmi University, 43 Mofateh Ave., Tehran 1571914911, Iran
2Iranian National Institute for Oceanography and Atmospheric Science, No. 3, Etemadzadeh St., Fatemi Ave., Tehran 1411813389, Iran
3Department of Analytical Chemistry, Faculty of Chemistry, K. N. Toosi University of Technology, Tehran 16315-1355, Iran
刊名: Journal of Chromatography A, 2015
来源数据库: Elsevier Journal
DOI: 10.1016/j.chroma.2015.01.090
关键词: Dissolved carbon dioxide flotationEmulsification microextractionLow density organic solventsOrganochlorine pesticidesSeawater
原始语种摘要: Abstract(#br)Dissolved carbon dioxide flotation after emulsification microextraction (DCF-EME) technique coupled with gas chromatography-electron capture detection (GC-ECD) was introduced for preconcentration and determination of six organochlorine pesticides (OCPs) in seawater samples. DCF-EME method is based on the rapid and simple phase separation of low density organic solvent from the aqueous phase via introducing of a saturated NaHCO 3 solution (9.6% w/v) into the acidified sample solution (0.1M of HCl) containing analytes. Thanks to the in situ generation of carbon dioxide (CO 2 ) bobbles intensified by ultrasound radiation, the dispersed extraction solvent was collected to the surface of the aqueous sample and then was narrowed to the capillary part of a special...
全文获取路径: Elsevier  (合作)
影响因子:4.612 (2012)

  • flotation 浮选
  • effective 有效的
  • carbon 
  • dioxide 二氧化物
  • aqueous 水的
  • applicability 适用性
  • acidified 酸化的
  • solution 溶液
  • separation 分选
  • saturated 饱和