| abstract |
The invention relates to a dosimeter material for ammonia and / or amines, the indicator used, and methods for their production and use, in particular for quality control in food. The dosimeter material for ammonia and / or amines, in particular in the gas phase, comprises an indicator which undergoes an irreversible color change in the presence of ammonia and / or amines, and an immobilization matrix for the indicator which is permeable to ammonia and / or amines, characterized in that that the immobilization matrix is impermeable to water and that the indicator comprises a phosphoporphyrin activated by covalent binding to a silinol group and having the formula porphyrin-P (V) X 3 , where X is Cl or Br. |