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14-September-2008 18:38:49 - tracing Dye tracing is tracking and tracing various flows using dye added to the liquid in question. The purpose of tracking may be an analysis of the flow itself, of the transport of something by the flow of the objects that convey the flow. It is an evolution of the ages-known float tracing method, which basically consists of throwing a buoyant object into a waterflow to see where it goes or where it emerges. Dye tracking may be either qualitative, i.e., the presence of particular flow and its estimate, or quantitative, when the amount of the traced dye is measured by special instruments. Contents 1 Fluorescent dyes 1.1 Quantitative tracing 2 Applications 2.1 Water tracing 2.2 Medicine and biology 3 See also 4 References Fluorescent dyes Fluorescein in the Chicago River on the St. Patrick's Day added for celebration, rather than tracing Fluorescein in the Chicago River on the St. Patrick's Day added for celebration, rather than tracing Often fluorescent dyes are used for this purpose, especially in the following circumstances Insufficient lighting e.g., sewers or cave waters Precise quantitative data are required, measured by a fluorometer Very small amounts of the dye is allowed to be added 1 part per trillion may be detected. Fluorescein is among the first fluorescent dyes, developed in 1871. Its disodium salt under the trademark Uranine was developed several years later and still remains among the best tracer dyes.1 Another popular tracer dye is rhodamine. Quantitative tracing The first method for technology-assisted dye tracing was based on the absorption of dye in charcoal. Charcoal packets may be placed along the expected route of the flow, later the collected dye may be chemically extracted and its amount subjectively evaluated. Filter fluorometers were the first devices that could detect dye concentrations beyond human eye sensitivity. Spectrofluorometers developed in the mid-1980s made it possible to perform advanced analysis of fluorescence. Applications Water tracing Typical application of water flow tracing include: 2 Plumbing/piping tracing Leak detection Checking for illegal tapping Pollution studies Natural waterflow analysis rivers, lakes, ocean currents, cave waterflows, karst studies, groundwater filtration, etc. Sewer and stormwater drainage analysis Medicine and biology Dye tracing may be used for the analysis of blood circulation within various parts of the human or animal body. For example, fluorescent angiography, a technique of analysis of circulation in retina is used for diagnosing various eye diseases. With modern fluorometers, capable of tracking single fluorescent molecules, it is possible to track migrations of single cells tagged by a fluorescent molecule see fluorescein in biological research. For example, the fluorescent-activated cell sorting in flow cytometry makes it possible to sort out the cells with attached fluorescent molecules from a flow. See also Fluorescence microscope FLEX mission Fluorescent green pig Float tracking References ^ An educational website about karst and dye tracing, by Crawford Hydrology Laboratory / Center for Cave and Karst Study in association with Western Kentucky University ^ Water Tracing Dye Technical Bulletin Retrieved from http://en..org/wiki/Dye_tracing Categories: Dyes | Data collection | Hydrology Views Article Discussion this page History Personal tools Log in / create account Navigation Main page Contents Featured content Current events Random article Search Go Search Interaction Community portal Recent changes Contact Donate to Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page Languages Deutsch Français This page was last modified on 5 August 2008, at 11:13
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So many of us do not eat a balanced diet, get enough sleep, have too much stress, or are impacted with toxins and pollutants. Drinking 2 ounces of MonaVie twice a day will help your body detoxify as well as build your immune system. Its the smartest thing you can do for yourself, so start today. Buying MonaVie through our company guarantees you support 7 days a week and, if you would like to share MonaVie with your family and friends we will guide you from start to finish.
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