Retraction Note: Multivariate optimization of removing of cobalt(II) with an efficient aminated-GMA polypropylene adsorbent by induced-grafted polymerization under simultaneous gamma-ray irradiation - Fatemeh Maleki; Mobina Gholami; Rezvan Torkaman; Meisam Torab‑Mostaedi; Mehdi Asadollahzadeh (Scientific Reports)