A sensor array, a) comprising a plurality of sensor half elements (1, 2) for the measurement of the concentration and the identification of a plurality of organic target compounds under investigation or related copies thereof within a mixture of organic compounds, b) further comprising a plurality of different sensor compounds (4, 5) wherein each sensor half element (1, 2) contains and/or carries one of said sensor compounds (4, 5), the sensor compounds (4, 5) binding to a specific binding site of said target compounds respectively, c) wherein each of said sensor compounds (4, 5) is assigned to at least one of the sensor half elements (1, 2), d) wherein each sensor half element (1, 2) intersects or traverses at least one of the other sensor half elements (1, 2) in a separate junction area, e) wherein the sensor compounds (4, 5) of two intersecting or traversing sensor half elements (4, 5) are spaced and/or converge and/or touch each other, f) wherein in each junction area an individual sensor is formed with a determined combination of two sensor compounds (4, 5) each sensor compound (4, 5) being located at one of the intersecting or traversing sensor half elements (1, 2) and g) wherein the sensor array comprises at least two junction areas with different combinations of sensor compounds (4, 5), h) wherein the sensor half elements (1, 2) are aligned in a grid structure, with a plurality of row elements and a plurality of column elements, i) wherein the row elements being formed by a number of sensor half elements (1, 2) and the column elements being formed by the remaining sensor half elements (1, 2), j) wherein the row elements being aligned and spaced next to each other and the column elements being aligned and spaced next to each other k) wherein each row element intersects at least two column elements, preferably each column element, in at least one junction area, and l) wherein each junction area forms an individual sensor, characterized in - that at least one of the sensor half elements (1, 2) or all sensor half elements (1, 2) contain a carrier, wherein the carrier supports a layer of the respective sensor compound (4, 5),and - that the carrier is an electrical conductor, and - that the carrier contains an electrically insulating layer which entirely surrounds the electrical conductor. a) comprising a plurality of sensor half elements (1, 2) for the measurement of the concentration and the identification of a plurality of organic target compounds under investigation or related copies thereof within a mixture of organic compounds, b) further comprising a plurality of different sensor compounds (4, 5) wherein each sensor half element (1, 2) contains and/or carries one of said sensor compounds (4, 5), the sensor compounds (4, 5) binding to a specific binding site of said target compounds respectively, c) wherein each of said sensor compounds (4, 5) is assigned to at least one of the sensor half elements (1, 2), d) wherein each sensor half element (1, 2) intersects or traverses at least one of the other sensor half elements (1, 2) in a separate junction area, e) wherein the sensor compounds (4, 5) of two intersecting or traversing sensor half elements (4, 5) are spaced and/or converge and/or touch each other, f) wherein in each junction area an individual sensor is formed with a determined combination of two sensor compounds (4, 5) each sensor compound (4, 5) being located at one of the intersecting or traversing sensor half elements (1, 2) and g) wherein the sensor array comprises at least two junction areas with different combinations of sensor compounds (4, 5), h) wherein the sensor half elements (1, 2) are aligned in a grid structure, with a plurality of row elements and a plurality of column elements, i) wherein the row elements being formed by a number of sensor half elements (1, 2) and the column elements being formed by the remaining sensor half elements (1, 2), j) wherein the row elements being aligned and spaced next to each other and the column elements being aligned and spaced next to each other k) wherein each row element intersects at least two column elements, preferably each column element, in at least one junction area, and l) wherein each junction area forms an individual sensor, - that at least one of the sensor half elements (1, 2) or all sensor half elements (1, 2) contain a carrier, wherein the carrier supports a layer of the respective sensor compound (4, 5),and - that the carrier is an electrical conductor, and - that the carrier contains an electrically insulating layer which entirely surrounds the electrical conductor.