ASTM D7574 Standard Test Method for Determination of Bisphenol A in Environmental Waters by Liquid Chromatography/Tandem Mass Spectrometry

Scope:

BPA can be identified qualitatively and quantitatively by following this standard test method. It is quite significant because it carries the status of a high-volume industrial chemical that is used in the preparation of polycarbonate plastic and epoxy resins.

Procedure: 

In ASTM D7574, solid-phase extraction of samples is done at pH 2 with a SPE cartridge. The resulting methyl tert-butyl ether extract is solvent exchanged into methanol, concentrated to a volume of 0.2 mL, brought to a final volume of 1 mL with water, and then analyzed by LC and MS/MS. The target compound, surrogate and internal standards are identified by retention time and two SRM transitions.

Specimen Size:

The 250 mL volume of the sample is adjusted to pH 2. The resulting methyl tert-butyl ether extract is concentrated to a volume of 0.2 mL.

Result:

The final report issued for each sample lists the concentration of BPA.

Conclusion:

ASTM D7574 explains the determination of BPA, which is extracted from water by SPE.