This standard specifies the liquid chromatography triple quadrupole mass spectrometry method for the determination of six phthalates in water.

This standard is applicable to the determination of six phthalate ester compounds, including dimethyl phthalate (DMP), diethyl phthalate (DEP), butyl benzyl phthalate (BBP), dibutyl phthalate (DBP), di (2-ethylhexyl) phthalate (DEHP), and di-n-octyl phthalate (DNOP), in surface water, groundwater, domestic sewage, industrial wastewater, and seawater.