This standard specifies the determination methods of dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), di(2-ethylhexyl)phthalate (DEHP), di-n-octyl phthalate (DNOP), diisononyl phthalate (DINP) and diisodecyl phthalate (DIDP) in textile dyeing and finishing auxiliaries.
This standard is applicable to the determination of above six kinds of phthalates in textile dyeing and finishing auxiliaries with gas chromatography-mass spectrometry (GC-MS).
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB/T 6682-2008 Water for Analytical Laboratory Use-Specification and Test Methods (ISO 3696:1987, MOD)
GB/T 8170-2008 Rules of Rounding Off for Numerical Values & Expression and Judgment of Limiting Values
3 Principle
Extract the dibutyl phthalate, benzyl butyl phthalate, di(2-ethylhexyl)phthalate, di-n-octyl phthalate, diisononyl phthalate and diisodecyl phthalate in the specimen in ultrasonic bath with trichloromethane or other proper solvent, and then determine the extractant with the gas chromatography-mass selective detector (GC-MSD) and quantify the characteristic ions with external standard method.
