GB/T 23972-2009 PDF English
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| GB/T 23972-2009 | English | 145 |
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Determination of alkylphenols and alkylphenol polyethoxylates in textile dyeing and finishing auxiliaries - LC/MS method
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GB/T 23972-2009: Determination of alkylphenols and alkylphenol polyethoxylates in textile dyeing and finishing auxiliaries - LC/MS method
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT23972-2009
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.100.40
G 70
Determination of alkylphenols and alkylphenol
polyethoxylates in textile dyeing and finishing
auxiliaries - LC/MS method
Issued on. JUNE 02, 2009
Implemented on. FEBRUARY 01, 2010
Issued by. General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Terms and definitions... 4
4 Determination methods... 5
5 Low detection limit, recovery and precision... 9
6 Test report... 9
Appendix A (Normative) CAS RN of common octylphenol, nonylphenol,
octylphenol polyethoxylate and nonylphenol polyethoxylate... 10
Appendix B (Informative) Schematic diagrams... 11
Foreword
Appendix A of this Standard is a normative appendix; Appendix B is an
informative appendix.
This Standard was proposed by China Petroleum and Chemical Industry
Federation.
This Standard shall be under the jurisdiction of National Technical Committee
134 on Dyestuff of Standardization Administration of China (SAC/TC 134).
The drafting organizations of this Standard. Shenyang Research Institute of
Chemical Industry, Zhejiang Transfar Co., Ltd., Intertek Testing Services
Shanghai Limited.
The drafters of this Standard. Pu Aijun, Lu Linguang, Ji Lanqin, Lv Tiehai, Zhao
Ting, Shen Rijiong, Chen Ru, Zhao Mei, Ji Hao, Wang Jianping.
Determination of alkylphenols and alkylphenol
polyethoxylates in textile dyeing and finishing
auxiliaries - LC/MS method
1 Scope
This Standard specifies the determination methods of alkylphenols and
alkylphenol polyethoxylates in textile dyeing and finishing auxiliaries.
This Standard applies to the determination of contents of alkylphenols and
alkylphenol polyethoxylates in textile dyeing and finishing auxiliaries by LC/MS
method.
2 Normative references
The terms in the following documents become the terms of this Standard by
reference to this Standard. For dated references, all subsequent amendments
(not including errata content) or revisions do not apply to this standard. However,
parties to agreements that are based on this Standard are encouraged to study
whether the latest versions of these documents can be used. For undated
references, the latest edition applies to this Standard.
GB/T 6682-2008, Water for analytical laboratory use - Specification and test
methods (ISO 3696.1987, MOD)
3 Terms and definitions
The following terms and definitions are applicable to this Standard.
3.1 Alkylphenols, AP for short
The molecular structure of alkylphenols is. R-C6H4-OH. The substances that
are commonly used in this category are octylphenol (C8H17-C6H4-OH, OP for
short) and nonylphenol (C9H19-C6H4-OH, NP for short).
4 Determination methods
4.1 General provisions
Unless otherwise specified, use only reagents that are identified as analytical
reagents, and grade-3 water that is specified in GB/T 6682-2008.The
determination of the test results shall be made according to the rounding
comparison method of 4.3.3 in GB/T 8170-2008.
4.2 Method summary
For the sample, use methanol as a solvent; use the ultrasonic vibration method
to dissolve the alkylphenols and alkylphenol polyethoxylates in the textile
dyeing and finishing auxiliaries; filter through a filter membrane; then, use the
LC/MS method to select multiple fragment ions from the characteristic ions;
4.3 Instruments and apparatuses
a) HPLC-MS.
4.4 Reagents and solutions
4.5 Determination conditions
4.6 Solution preparation
4.6.1 Preparation of standard solutions
Accurately weigh appropriate amounts of OP, NP, OPEO, and NPEO standards;
use methanol to respectively prepare standard stock solutions whose
concentration is 1 mg/mL.
4.7 Determination steps
Turn on the liquid chromatography-mass spectrometer to warm up; after the
instrument runs stably, first perform a full-scan analysis of the sample; then,
compare it with the retention time of the standard sample and the mass
spectrum for determination; select a standard test solution of similar
concentration; use the selected ions that are specified in Table 2 for
measurement. Inject the sample through the autosampler. After the last
component had flowed out, use the data processor to process the result.
4.8 Result calculation
The content of alkylphenols or alkylphenol polyethoxylates in textile dyeing and
finishing auxiliary products is calculated in mass fraction wi; the value is
expressed in (mg/kg); it is calculated according to Formula (1).
5 Low detection limit, recovery and precision
5.1 Low detection limit
The lower detection limits of this method for octylphenol, nonylphenol,
octylphenol polyethoxylate and nonylphenol polyethoxylate in the sample are
25 mg/kg, 25 mg/kg, 10 mg/kg, 10 mg/kg.
5.3 Precision
The absolute difference between two independent test results, that are gained
in the same laboratory, by the same operator, with the same equipment, by the
same test method, of which the same test object is tested independently of each
other in a short time, is not greater than 20% of the arithmetic mean of the two
determination values.
6 Test report
The test report shall at least provide the following contents.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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