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  2. Miller–Urey experiment - Wikipedia

    en.wikipedia.org/wiki/Miller–Urey_experiment

    Below is a table of amino acids produced and identified in the "classic" 1952 experiment, as analyzed by Miller in 1952 [3] and more recently by Bada and collaborators with modern mass spectrometry, [7] the 2008 re-analysis of vials from the volcanic spark discharge experiment, [7] [55] and the 2010 re-analysis of vials from the H 2 S-rich ...

  3. Stanley Miller - Wikipedia

    en.wikipedia.org/wiki/Stanley_Miller

    Stanley Lloyd Miller (March 7, 1930 – May 20, 2007) was an American chemist who made important experiments concerning the origin of life by demonstrating that a wide range of vital organic compounds can be synthesized by fairly simple chemical processes from inorganic substances.

  4. Chromatography - Wikipedia

    en.wikipedia.org/wiki/Chromatography

    Paper chromatography is a technique that involves placing a small dot or line of sample solution onto a strip of chromatography paper. The paper is placed in a container with a shallow layer of solvent and sealed. As the solvent rises through the paper, it meets the sample mixture, which starts to travel up the paper with the solvent.

  5. List of purification methods in chemistry - Wikipedia

    en.wikipedia.org/wiki/List_of_purification...

    Chromatography employs continuous adsorption and desorption on a packed bed of a solid to purify multiple components of a single feed stream. In a laboratory setting, mixture of dissolved materials are typically fed using a solvent into a column packed with an appropriate adsorbent, and due to different affinities for solvent (moving phase ...

  6. Over and over again, the military has conducted dangerous ...

    www.aol.com/article/2016/10/01/over-and-over...

    A paper from the National Academy of Sciences analyzing military experiments notes that B. globigii is "now considered a pathogen" and is often a cause of food poisoning. "Infections are rarely ...

  7. Paper chromatography - Wikipedia

    en.wikipedia.org/wiki/Paper_chromatography

    Paper chromatography is a useful technique because it is relatively quick and requires only small quantities of material. Separations in paper chromatography involve the principle of partition. In paper chromatography, substances are distributed between a stationary phase and a mobile phase.

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