HJ 1242-2022 HJ 1242-2022 Determination of six phthalates esters compounds in water by liquid chromatography-triple quadrupole mass spectrometry
HJ 1242-2022 HJ 1242-2022 Determination of six phthalates esters compounds in water by liquid chromatography-triple quadrupole mass spectrometry
Basic Information
Scope
This standard specifies the liquid chromatography-triple quadrupole mass spectrometry method for the determination of six phthalate ester compounds in water. This standard is applicable to the determination of six phthalate ester compounds, including dimethyl phthalate (DMP), diethyl phthalate (DEP), butylbenzyl phthalate (BBP), dibutyl phthalate (DBP), bis(2-ethylhexyl) phthalate (DEHP), and dicyclohexyl phthalate (DNOP), in surface water, groundwater, domestic wastewater, industrial wastewater, and seawater. For acetonitrile extraction: When the sampling volume is 10.0 ml, the extraction volume is 5.0 ml, and the injection volume is 5 μl, the method detection limits for the six target compounds are 0.8 μg/L to 9 μg/L, and the determination limits are 3.2 μg/L to 36 μg/L. Details are provided in Appendix A. For n-hexane extraction: This method is only applicable to the determination of DBP and DEHP in surface water and groundwater. When the sampling volume is 100 ml, the extraction volume is 2.0 ml, and the injection volume is 10 μl, the method detection limits for DBP and DEHP are 0.4 μg/L and 0.3 μg/L, respectively, and the determination limits are 1.6 μg/L and 1.2 μg/L, respectively. Details are provided in Appendix A.