GB/T 17593.2-2025Textile - Determination of Heavy Metals - Part 2: Inductively Coupled Plasma-optical Emission Spectrometry (ICP-OES) and Inductively Coupled Plasma-mass Spectrometry (ICP-MS) (English PDF)

Foreword

This document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for Standardization - Part 1: Rules for the Structure and Drafting of Standardizing Documents.

This document is Part 2 of GB/T 17593 Textile - Determination of Heavy Metals. GB/T 17593 has issued the following parts:

and Inductively Coupled Plasma-mass Spectrometry (ICP-MS);

---Part 3: Chromium (VI) - Spectrophotometry;

---Part 4: Arsenic and Mercury - Atomic Fluorescence Spectrophotometry.

This document serves as a replacement for GB/T 17593.2-2007 Textiles - Determination of Heavy Metals - Part 2: Inductively Coupled Plasma Atomic Emission Spectrometry. In comparison with GB/T 17593.2-2007, apart from structural adjustments and editorial modifications, the main technical changes are as follows:

---The scope of application is modified (see Chapter 1; Chapter 1 of Version 2007);

---The test principle of inductively coupled plasma-mass spectrometer is added (see Chapter 4);

---Reagents and materials are added, including three types of concentrated nitric acid and nitric acid solution reagents, internal standard stock solution, and gold element solution (see 5.2 ~ 5.4, 5.7 and 5.8);

---Instruments and equipment are added, including aqueous filter membrane, detection instruments, balance and pipette (see 5.9, 6.2, 6.3 and 6.6);

---The preparation of the mixed internal standard working solution is added to the test procedures (see 7.1.2);

---“ICP-AES method” is modified into “ICP-OES method”, “low limit of determination” is modified into “limit of quantitation”, and the quantitation limit values for each element are modified (see 9.1 and Appendix C; Table 1 of 8.1 in Version 2007);

---The quantitation limit of ICP-MS method is added (see 9.1 and Appendix C);

---The instrument detection method is added to the test report [see c) of Chapter 10].

Please be noted that certain content of this document may involve patents. The issuing institution of this document does not undertake the responsibility of identifying these patents. This document was proposed by China National Textile and Apparel Council.

This document shall be under the jurisdiction of National Technical Committee 209 on Textiles of Standardization Administration of China (SAC/TC 209).

The drafting organizations of this document: Nanjing Customs Industrial Product Testing Center; TOREAD Holding Group Co., Ltd.; Zhejiang Ganglong Textile Technology Co., Ltd.; Shaoxing Jinxianghui Textile Printing and Dyeing Co., Ltd.; Guangdong Testing Institute of Product Quality Supervision; GIGE Holdings Group Co., Ltd.; China TESTA Textile Testing & Certification Services; Ningbo Party More Fun Cultural Creativity Co., Ltd.; China National Garment Association; China TESTA (Fujian) Textile Testing Co., Ltd.

The main drafters of this document: Zhou Jia, Du Qianqian, Hu Minzhuan, Ding Youchao, Zhang Guoqing, Sui Jiaojiao, Ma Linyu, Gong Yingqiu, Zhang Ruijie, Lou Danli, Du Chao, Xie Guoliang, Qian Lijun.

Introduction

GB/T 17593 Textile - Determination of Heavy Metals is a standard of test methods for testing the heavy metal contents in textiles using different methods, and it is proposed to consist of the following parts.

---Part 1: Atomic Absorption Spectrophotometry. The purpose is to determine the heavy metal contents in textiles using atomic absorption spectrophotometry.

and Inductively Coupled Plasma-mass Spectrometry (ICP-MS). The purpose is to determine the heavy metal contents in textiles using inductively coupled plasma-optical emission spectrometry and inductively coupled plasma-mass spectrometry.

---Part 3: Chromium (VI) - Spectrophotometry. The purpose is to determine the content of hexavalent chromium, a heavy metal, in textiles using spectrophotometry.

purpose is to determine the content of heavy metals arsenic and mercury in textiles using atomic fluorescence spectrophotometry.

1 Scope

This document describes the methods for determining 12 extractable heavy metals--lead (Pb), copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd), chromium (Cr), cobalt (Co), nickel (Ni), mercury (Hg), antimony (Sb), selenium (Se), and barium (Ba) in textiles using inductively coupled plasma-optical emission spectrometry (ICP-OES) and inductively coupled plasmamass spectrometry (ICP-MS).

This document applies to all types of textile products.

2 Normative References

The contents of the following documents constitute indispensable clauses of this document through the normative references in the text. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.

GB/T 6682-2008 Water for Analytical Laboratory Use - Specification and Test Methods

3 Terms and Definitions

This document does not have terms or definitions that need to be defined.

4 Principle

After extraction and filtration with acidic perspiration, use an inductively coupled plasma-optical emission spectrometer for testing. At the corresponding wavelength, determine the emission intensity of each heavy metal element and adopt the external standard method for quantitative determination.

Alternatively, after filtration of the extract, use an inductively coupled plasma-mass spectrometer for testing. Perform qualitative determination based on the element’s specific mass number (mass-to-charge ratio, m/z) and adopt the internal standard method for quantitative determination.

5 Reagents and Materials

Unless otherwise specified, only reagents confirmed to be guaranteed reagents shall be used in the analysis. 5.1 Water: Grade-2 water conforming to the provisions of GB/T 6682-2008. 5.2 Concentrated nitric acid: with a mass fraction of 65% ~ 68%. 5.3 Nitric acid solution (1 + 19): with a volume fraction of 5%. Take 50 mL of concentrated nitric acid (5.2) and use water to dilute it, then, reach a constant volume of 1,000 mL and shake it well. 5.4 Nitric acid solution (1 + 99): with a volume fraction of 1%. Take 10 mL of concentrated nitric acid (5.2) and use water to dilute it, then, reach a constant volume of 1,000 mL and shake it well. 5.5 Acidic perspiration: in accordance with the provisions of GB/T 3922, prepare acidic perspiration. The test solution shall be prepared right before use. 5.6 Heavy metal element stock solutions (1,000 mg/L): for lead, copper, zinc, arsenic, cadmium, chromium, cobalt, nickel, mercury, antimony, selenium and barium, use single-element or multi-element standard stock solutions of certified standard samples/substances. 5. […]

6 Instruments and Equipment

7 Test Procedures

8 Result Expression

The content of each heavy metal element i in the specimen is calculated in accordance with Formula (1):

Xi---the content of the element to be tested i in the specimen, expressed in (mg/kg);

ρi---the mass concentration of the element to be tested i in the specimen solution, expressed in (mg/L);

ρ0i---the mass concentration of the element to be tested in the blank test, expressed in (mg/L);

V---the volume of the specimen solution, expressed in (mL);

m---the mass of the specimen, expressed in (g);

f---the dilution factor of the specimen solution.

The determination result shall have the same number of decimal places as the limit of quantitation of the method. Elements below the limit of quantitation of the method shall be recorded as “not detected”.

9 Limit of Quantitation and Precision

10 Test Report

The test report shall include at least the following aspects:

a) Serial No. of this document;

f) Any details deviating from this document.

Appendix A Reference Conditions for ICP-OES Instrument Operation

Since test results depend on the instrument used, it is impossible to provide all parameters for chromatographic analysis. The operating conditions listed in Table A.1 and the analytical wavelengths listed in Table A.2 have been proven suitable for the tests.