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

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Optical rubbery ormosils sensor for the detection of ammonia.

Rubbery ormosil films with immobilized aminofluorescein (AF) were investigated to develop an optochemical sensor for the determination of ammonia in water. The gel precursors with tetramethoxysilane (TMOS) and dimethyldimethoxysilane (DiMeDMOS) were deposited on glass supports, and characterized in terms of response to pH, and to dissolved ammonia at constant pH. After preconditioning the sensing film was stable for 6 months. The detection limit for ammonia in water was 0.2 microg mL(-1) (S/N 2), the response being linearly dependent on concentration in the range of 0.5 to 80 microg mL(-1) ammonia. The response time was less than 5 min. The effects of sodium chloride concentration, temperature, and coexisting metal ions and compounds were investigated.[1]

References

  1. Optical rubbery ormosils sensor for the detection of ammonia. Chen, X., Dai, Y.J., Li, Z., Zhang, Z.X., Wang, X.R. Fresenius' journal of analytical chemistry. (2001) [Pubmed]
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