Determination of harmful substances in textile dyeing and finishing auxiliaries—Part 2:Determination of perfluorooctane sulfonates and perfluorooctanoicacid—HPLC-MS/MS method
1 Scope
This part of GB/T 29493 specifies the HPLC-MS/MS method for the determination of perfluorooctane sulfonates and perfluorooctanoicacid in textile dyeing and finishing auxiliaries.
It is applicable to the determination of perfluorooctane sulfonates and perfluorooctanoicacid in various textile dyeing and finishing auxiliaries.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 6682-2008 Water for analytical laboratory use - Specification and test methods
GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values
3 Theory
Adopt methanol solvent as sample; extract perfluorooctane sulfonates (PFOS) and perfluorooctanoicacid (PFOA) by ultrasonic wave; determine and confirm with HPLC-MS/MS instrument; quantify with external standard method.
4 Reagents and materials
Unless otherwise stated, only approved analytical reagents shall be used.
4.1 Methanol (chromatographic grade).
4.2 Standard product of perfluorooctanesulfonic acid potassium salt (PFOS, CAS No.: 2795-39-3) with purity ≥95% (mass fraction).
4.3 Standard product of perfluorooctanoicacid (PFOA, CAS No.: 335-67-1) with purity ≥95% (mass fraction).
4.4 Standard stock solution of perfluorooctane sulfonates (200mg/L):
Foreword i
1 Scope
2 Normative References
3 Theory
4 Reagents and materials
5 Instruments and apparatus
6 Analytical procedures
7 Blank test
8 Calculation of results
9 Determination lower limit, recovery rate and precision
10 Test report
Annex A (Informative) HPLC-MC analysis diagram examples
