Chemical imaging of contaminated recycled paper and board: Towards identification of the causality of food contaminationLucas Biant, Murielle Hayert, Hawraa Ayoub, Phuong-Mai Nguyen and Olivier VitracMATEC Web Conf., 379 (2023) 01006DOI: https://doi.org/10.1051/matecconf/202337901006