text: Yo, check it out, I got a paper to spit
  Investigating solid-phase extraction, you won't quit
  Ionic liquid mixed hemimicelles be the technique
  Preconcentrating phthalates, no time to be weak
  
  Comparing two sorbents, room temperature they chill
  1-hexyl-3-methylimidazolium bromide, that's a thrill
  And 1-dodecyl-3-methylimidazolium bromide, let it sink
  Coated on silica, that's how they link
  
  [C(12)mim], Br-coated silica, the one that's dope
  Selected as SPE material, giving us hope
  Di-ethyl-phthalate, DnPP, DnBP, DcHP,
  And DEHP, we can extract them all, can't you see?
  
  Under optimal conditions, we go all in
  Adsorption amounts, yeah, we gonna win
  Desorbing with methanol, just 3mL, low pH
  Those analytes released, now we're stress-free
  
  Let's talk extraction efficiency, what's the deal?
  RTILs concentration, pH, and ionic strength, for real
  Breakthrough volume, it's a factor we consider
  Discussing it all, we ain't no quitter
  
  Applied to environmental water, we make a splash
  Four samples tested, concentration factor, a bash
  Easy peasy, 600 times we amplify
  Detecting phthalates, ain't no lie
  
  0.12 to 0.17 mug/L, that's the range we find
  Detection limits achieved, oh so fine
  Recovery measurement on spiked samples we did
  Good recovery results, no need to hid
  
  85 to 107 percent, that's the recovery rate
  With R.S.D. below 6, we feeling great
  So there you have it, our method's success
  Solid-phase extraction, putting phthalates to rest