Tan, Sze Chieh published the artcileA metal-organic framework of type MIL-101(Cr) for emulsification-assisted micro-solid-phase extraction prior to UHPLC-MS/MS analysis of polar estrogens, Recommanded Product: n-Octanol, the main research area is polar estrogen UHPLC MS micro solid phase extraction review; Endocrine disrupting compounds; Environmental water; Hormones; Liquid chromatography-tandem mass spectrometry; Membrane-protected; Microextraction; Porous material; Sample preparation.
A seamless two-step extraction procedure integrating ultrasound-assisted emulsification microextraction (USAEME) and vortex-assisted micro-solid-phase extraction (μ-SPE) was developed. A highly porous metal-organic framework of type MIL-101(Cr) is used as the sorbent, and ultra-high-performance liquid chromatog. in combination with tandem mass spectrometry is used for detection. The steroid hormones estrone 17β-estradiol, estriol, and 17α-ethynylestradiol were extracted from water samples by using this method. These steroids are polar and do not pass through the polypropylene membrane that is conventionally used in μ-SPE. In the method presented here, 1-octanol is used in USAEME to extract and pre-concentrate the steroids. This facilitates the transfer to the MIL-101(Cr) phase retained by the membrane in the subsequent μ-SPE step. MIL-101(Cr) was characterized by various methods, and the parameters affecting the overall extraction efficiency were optimized. Under the most favorable conditions, the limits of detection are between 0.95 and 23 ng L-1. Good intra-day and inter-day precisions were obtained, with relative standard deviations of ≤ 9.9%. Enrichment factors are between 34 and 52. The method was applied to genuine environmental water samples in which estrone was detected. Relative recoveries ranged between 85.4% and 120.8%. [Figure not available: see fulltext.].
Microchimica Acta published new progress about Activated charcoal Role: TEM (Technical or Engineered Material Use), USES (Uses). 111-87-5 belongs to class alcohols-buliding-blocks, name is n-Octanol, and the molecular formula is C8H18O, Recommanded Product: n-Octanol.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts