Countercurrent Distribution
Countercurrent distribution (CCD, also spelled "counter current" distribution) is an analytical chemistry technique which was developed by Lyman C. Craig in the 1940s. Countercurrent distribution is a separation process that is founded on the principles of liquid–liquid extraction where a chemical compound is distributed (partitioned) between two immiscible liquid phases (oil and water for example) according to its relative solubility in the two phases. The simplest form of liquid-liquid extraction is the partitioning of a mixture of compounds between two immiscible liquid phases in a separatory funnel. This occurs in five steps: 1) preparation of the separatory funnel with the two phase solvent system, 2) introduction of the compound mixture into the separatory funnel, 3) vigorous shaking of the separatory funnel to mix the two layers and allow for mass transfer of compounds in and out of the phases, 4) The contents of the separatory funnel are allowed to settle back into two dist ...
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Lyman C
Lyman may refer to: Places Ukraine * Lyman, Ukraine United States * Lyman, Iowa * Lyman, Maine * Lyman, Mississippi * Lyman, Nebraska * Lyman, New Hampshire * Lyman, Oklahoma * Lyman, South Carolina * Lyman, South Dakota * Lyman County, South Dakota * Lyman, Utah * Lyman, Washington * Lyman, Wyoming Other uses * Lyman (crater), a lunar impact crater * Lyman (name) * Lyman series of hydrogen spectral lines See also * Liman (other) * Lyman High School (other) Lyman High School may refer to: * Lyman Memorial High School, Lebanon, Connecticut * Lyman High School (Florida), Longwood, Florida * Lyman High School (South Dakota), Presho, South Dakota * Lyman High School (Wyoming), Lyman, Wyoming See also ...