1 Scope
This standard specifies the method for determination of the content of ortho-phenylphenol in dye products.
This standard is applicable to the determination of the content of ortho-phenylphenol in commercial dyes, dye products, dye intermediates and textile dyeing and finishing auxiliaries by gas chromatography-mass spectrometry (GC-MS).
2 Normative references
The following standards contain provisions which, through reference in this standard, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the normative documents indicated below. 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 Theory
Extract the sample with n-hexane in ultrasonic bath, then conduct determination of the extract by gas chromatograph-mass selective detector (GC-MSD) after the extracting solution is filled to volume, and quantify the characteristic ions by external standard method.
4 Determination method
4.1 General requirements
Foreword II
1 Scope
2 Normative references
3 Theory
4 Determination method
5 Determination lower limit, recovery rate and precision
6 Test report
Annex A (Normative) CAS RN and characteristic ion of ortho-phenylphenol
Annex B (Informative) GC-MS total ion chromatogram of ortho-phenylphenol
