Detection and quantification “in situ” of mercury, copper and nitrites in water and food products using a polymeric detector

The method developed in this patent is based on the use of cross-linked copolymers, which act as colorimetric sensors, for the detection and / or quantification of divalent metals: mercury [Hg (II)] and copper [Cu (II)]; and anions: nitrite (NO2-). It is applicable in different matrices, both aqueous mediums and food products. The possibility of detecting and/or quantifying, with the same method, both divalent metals (mercury and copper) and oxidizing anions (nitrites), makes it very versatile and turn it into unique in the market. In addition, this versatility is transferred to the measurement, which can be carried out with different equipment. In addition, it does not produce colour migrations.