title: Matrix solid-phase dispersion with sand in chromatographic analysis of essential oils in herbs.
abstract: BACKGROUND
  Matrix solid-phase dispersion (MSPD) is a very simple, cheap and relatively quick sample preparation procedure which involves simultaneous disruption and extraction of various solid and semi-solid samples due to the direct mechanical blending of the sample with a SPE sorbent, mainly C(18). Little is known about MSPD application as a sample preparation method for the analysis of essential oil components in herbs.
  
  
  OBJECTIVE
  To evaluate if C(18) sorbent, commonly used in MSPD process, can be substituted with sand in the procedure of essential oil analysis.
  
  
  METHODS
  Essential oil extracts were obtained from mint, sage, chamomile, marjoram, savory and oregano using MSPD with C(18) sorbent or sand, pressurised liquid extraction and steam distillation. Their qualitative and quantitative compositions ware established by GC-MS and GC-FID.
  
  
  RESULTS
  The results prove that C(18) sorbent can be substituted with sand in the procedure of essential oil analysis in herbs. The recoveries of essential oil components estimated using MSPD/sand are almost equal to those using pressurised liquid extraction.
  
  
  CONCLUSIONS
  The results presented in the paper reveal that MSPD with sand is suitable for the isolation of essential oil components from herbs. Its extraction efficiency is equivalent to pressurised liquid extraction, recognised as one of the most efficient extraction methods. The cost of MSPD procedure for essential oil analysis can be significantly diminished by substituting C(18) with sand.
authors.affiliation: Faculty of Chemistry, Maria Curie Sklodowska University, Lublin, Poland. dawid@poczta.umcs.lublin.pl
authors.forename: Andrzej L
authors.initials: AL
authors.lastname: Dawidowicz
authors.forename: Dorota
authors.initials: D
authors.lastname: Wianowska
authors.forename: Ewelina
authors.initials: E
authors.lastname: Rado
mesh_terms: D008401:Gas Chromatography-Mass Spectrometry; D009822:Oils, Volatile / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry*; D010944:Plants / Q000737:chemistry*; D012822:Silicon Dioxide; D052616:Solid Phase Extraction / Q000379:methods*; D013227:Steam
chemical_list: D009822:Oils, Volatile; D010938:Plant Oils; D013227:Steam; D012822:Silicon Dioxide