ISO publishes new method for determining bisphenols in leather tanning chemicals
The International Organization for Standardisation (ISO) has released ISO 21235:2024, a new standard detailing the method for determining the total content of specific bisphenols in chemicals used in the leather tanning industry. This method is crucial for ensuring safety and quality in tanning processes.
The development of this method was significantly contributed to by Italian delegates from the Technical Commission UNPAC, including Tiziana Gambicorti, Franca Nuti, Francesco Troisi, Riccardo Girolami, and Massimo De Santis. Their expertise and persistence were instrumental in achieving this milestone.
ISO 21235:2024 outlines the procedure for quantifying bisphenol A, bisphenol AF, bisphenol B, bisphenol F, and bisphenol S using liquid chromatography (LC) with various detectors such as single quadrupole (MS), triple quadrupole mass spectrometer (MS/MS), ultraviolet (UV), diode array spectrometer (DAD), or fluorescence spectrometer (FLD). The document notes that while bisphenol S cannot be detected using FLD, the method can be adapted for other bisphenols if validated by the laboratory.
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