The collective term for a set of laboratory techniques for the separation of mixtures.
Confidence votes 160. It is the separation of two or more substances in a solvent. Chromatography is a separation technique based on the different interactions of the compounds with the two phases, a mobile phase and a stationary phase, as the compounds travel through the supporting medium. The mobile phase is the ink spot, as it travels up the piece of paper (in paper chromatography). Chromatography is an analytical method to separate the compounds from the two immiscible phases,one being a mobile phase and another being a stationary phase. It is used in pe … troleum industry,pharmaceutical industry. Chromatography (/ˌkroʊməˈtɒɡrəfi/ ; from Greek χρῶμα chroma which means color and γράφειν graphein to write) is the collective term for a set of laboratory techniques for the separation of mixtures. The purpose of preparative chromatography is to separate the components of a mixture for more advanced use (and is thus a form of purification). Analytical chromatography is done normally with smaller amounts of material and is for measuring the relative proportions of analytes in a mixture. Chromatography is a pretty accurate description of what happens to ink on wet paper, because it literally means color writing (from the Greek words chroma and graphe). Really, though, it's a bit of a misnomer because it often doesn't involve color, paper, ink, or writing. Chromatography is actually a way of separating out a mixture of chemicals, which are in gas or liquid form, by letting them creep slowly past another substance, which is typically a liquid or solid. PAPER CHROMATOGRAPHY This page is an introduction to paper chromatography-including two way chromatography. Carrying out paper chromatography Background Chromatography is used to separate mixtures of substances into their components. All forms of chromatography work on the same principle. They all have a stationary phase (a solid, or a liquid supported on a solid) and a mobile phase (a liquid or a gas). The mobile phase is a suitable liquid solvent or mixture of solvents. Producing a paper chromatogram You probably used paper chromatography as one of the first things you ever did in chemistry to separate out mixtures of coloured dyes-for example, the dyes which make up a particular ink. Background. Chromatography is used to separate mixtures of substances into their components. All forms of chromatography work on the same principle. They all have a stationary phase (a solid, or a liquid supported on a solid) and a mobile phase (a liquid or a gas). The mobile phase is a suitable liquid solvent or mixture of solvents. Producing a paper chromatogram You probably used paper chromatography as one of the first things you ever did in chemistry to separate out mixtures of coloured dyes-for example, the dyes which make up a particular ink. Chromatography is a process that can be used to isolate the various components of a mixture. There are a number of different types in use, including gas, liquid, paper, and gel permeation chromatography, and this process can get quite involved, especially with complex mixtures. Analytical chromatography is used in drug testing. Chromatography is a scientific process wherein a solvent is used to separate the many components of a complex mixture. Chromatography is performed on urine samples used for drug tests. Drug testing from blood samples may utilize chromatography Definition of CHROMATOGRAPHY. : a process in which a chemical mixture carried by a liquid or gas is separated into components as a result of differential distribution of the solutes as they flow around or over a stationary liquid or solid phase. — chro·mato·graph·ic \krō-ˌma-tə-ˈgra-fik, krə-\ adjective.  1 chromatography is a versatile technique for separating mixtures. 2  strategy: flow the mixture over a material that retains some components more than others, so different components flow over the material at different speeds. 3  a simple analogy for chromatography. 
http://www.answers.com/Q/What_is_chromatography https://en.wikipedia.org/wiki/Chromatography http://www.explainthatstuff.com/chromatography.html http://www.chemguide.co.uk/analysis/chromatography/paper.html http://www.chemguide.co.uk/analysis/chromatography/paper.html http://www.wisegeek.org/what-is-chromatography.htm http://www.merriam-webster.com/dictionary/chromatography http://antoine.frostburg.edu/chem/senese/101/matter/chromatography.shtml
what is chromatography