Standard No.:	GB/T 29493.2-2013
English Name:	Determination of harmful substances in textile dyeing and finishing auxiliaries—Part 2:Determination of perfluorooctane sulfonates and perfluorooctanoicacid—HPLC-MS/MS method
Chinese Name:	纺织染整助剂中有害物质的测定 第2部分：全氟辛烷磺酰基化合物(PFOS)和全氟辛酸(PFOA)的测定 高效液相色谱-质谱法
Chinese Classification:	G70    Basic standards and general methods for chemical additive
Professional Classification:	GB    National Standard
ICS Classification:	71.100.40 71.100.40    Surface active agents 71.100.40
Source Content Issued by:	AQSIQ; SAC
Issued on:	2013-2-7
Implemented on:	2013-9-1
Status:	superseded
Superseded by:	GB/T 29493.2-2021 Determination of harmful substances in textile dyeing and finishing auxiliaries—Part 2: Determination of perfluorinated compounds (PFCs)
Superseded on:	2022-5-1
Target Language:	English
File Format:	PDF
Word Count:	5000 words
Translation Price(USD):	120.0
Delivery:	via email in 1 business day

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