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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Optical nitrite sensor based on chemical modification of a polymer film.

A new, low-cost nitrite sensor was developed by immobilizing a direct indicator dye in an optical sensing film for food and environmental monitoring. This sensor was fabricated by binding gallocyanine to a cellulose acetate film that had previously been subjected to an exhaustive base hydrolysis. The membrane has good durability (>6 months) and a short response time (<7 s). Nitrite can be determined for the range 0.008-1.50 microg/ml with 3delta detection limits of 1 ng/ml. The method is easy to perform and uses acetylcellulose as a carrier. The reagents used for activating the cellulose support are inexpensive, non-toxic and widely available.[1]

References

  1. Optical nitrite sensor based on chemical modification of a polymer film. Kazemzadeh, A., Daghighi, S. Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy. (2005) [Pubmed]
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