TY - JOUR AU - Alberti, Giancarla AU - Zanoni, Camilla AU - Magnaghi, Lisa Rita AU - Biesuz, Raffaela PY - 2020 DA - 2020/07/20 TI - Low-cost, disposable colourimetric sensors for metal ions detection JO - Journal of Analytical Science and Technology SP - 30 VL - 11 IS - 1 AB - In this work, two colourimetric sensors for metal ions detection are presented. The devices are obtained by fixing two classical dyes, Eriochrome Black T (EBT) and 1-(2-pyridylazo)-2-naphthol (PAN), on the commercial paper sheet “Colour Catcher®” (here named under the acronym CC) generally used in the washing machine to prevent colour run problems. The devices are optical sensors, since the indicator dye, fixed on the solid material, changes its spectral properties (colour and hence UV-vis spectrum) upon contact with the metal ion solution. We used the partial least squares (PLS) regression for obtaining the relationship between the metal ion content and the UV-vis spectrum change of each sensor. SN - 2093-3371 UR - https://doi.org/10.1186/s40543-020-00221-x DO - 10.1186/s40543-020-00221-x ID - Alberti2020 ER -