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publicado em 02/08/2011 às 13h30:00
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15 minutes in sensor detects dangerous levels of heavy metals in human

first sensor lab-on-a-chip that provides rapid feedback on the levels of manganese present in humans

 
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Foto: Dottie Stover/University of Cincinnati
Foto: Dottie Stover/University of Cincinnati
Foto: Dottie Stover/University of Cincinnati
Foto: Dottie Stover/University of Cincinnat
Sensor para detectar manganês Ian Papautsky, um dos pesquisadores envolvidos no estudo para a criação do sensor Sensor para detectar manganês Ian Papautsky junto à estudante Xing Pei
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Sensor para detectar manganês
Ian Papautsky, um dos pesquisadores envolvidos no estudo para a criação do sensor
Sensor para detectar manganês
Ian Papautsky junto à estudante Xing Pei

Researchers at the University of Cincinnati (UC) developed the first sensor lab-on-a-chip (lab on a chip) able to analyze the levels of manganese in the human body. The sensor is not harmful to the environment or children, and will have its first field test in Marietta, Ohio, United States, where a researcher at UC is conducting a study on possible health effects of heavy metals on health.

The sensor is disposable and inexpensive detects heavy metals highly electronegative faster than the technology currently available in health institutions. It is estimated that the device will be used in devices point-of-care to provide the result on the levels of heavy metals in about 10 minutes. It is expected that the sensor has potential for widespread use in clinical practice, and occupational research, for example, for testing of nutrition in children.

The new sensor is environmentally friendly, as the working electrode is made of bismuth instead of mercury, which is more commonly used. It is suitable for children because it requires only one or two drops of blood for testing instead of five milliliters of the sample that is required today.

The professor of electrical and computer engineering Papautsky Ian explains that "with conventional methods to measure the levels of manganese, the results are released 48 hours after the blood is sent to the laboratory. For the purposes of clinical monitoring of health from the measurement these levels is a desirable response as soon as possible on the levels of exposure, especially in rural areas, high risk, where access to a laboratory certificate of metals is more difficult. "

The first field test is planned for 2012 in Marietta, Ohio (USA).

A specific motivation for developing the sensor was an ongoing project developed by Erin Haynes, who is studying air pollution and the effects of manganese and lead on health in Marietta. Manganese is emitted in this area because it is there that is the only manganese refinery in the United States and Canada. Preliminary results of the study found elevated levels of metal in the city's inhabitants as compared to those living elsewhere.

Read matéria completa (in English) on the site of the University of Cincinnati.

Source: Isaude.net
   Palavras-chave:   Sensor    Lab-on-a-chip    Heavy metals    Manganese    Blood test    University of Cincinnati   
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