{"id":460247,"date":"2024-10-20T10:08:39","date_gmt":"2024-10-20T10:08:39","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-211352024\/"},"modified":"2024-10-26T18:45:02","modified_gmt":"2024-10-26T18:45:02","slug":"bs-en-iso-211352024","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-211352024\/","title":{"rendered":"BS EN ISO 21135:2024"},"content":{"rendered":"
This document specifies a method for determining the total content (solvent extractable) of the following bisphenols in chemicals for the leather tanning industry: \u2014 bisphenol A; \u2014 bisphenol AF; \u2014 bisphenol B; \u2014 bisphenol F; \u2014 bisphenol S. This method requires the use of liquid chromatography (LC) with either a single quadrupole mass spectrometer (MS), a triple quadrupole mass spectrometer (MS\/MS), an ultraviolet (UV) detector, a diode array detector (DAD) or a fluorescence detector (FLD) to identify and quantify the bisphenols. NOTE 1 This method can also be used for other bisphenols if they are validated by the laboratory. NOTE 2 Bisphenol S cannot be detected with FLD.<\/p>\n
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2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 8.1 Extraction 8.2 Instrumental analysis 9.1 Calculation without internal standard <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 9.2 Calculation with internal standard 9.3 Calculation of the results as a sum <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Chemicals for the leather tanning industry. Determination of the total content of certain bisphenols<\/b><\/p>\n |