1.1 This test method covers the use of inductively coupled plasma optical emission spectrometry (ICP-OES) and inductively coupled plasma mass spectrometry (ICP MS) analysis for determination of the mass fraction of total silver in consumer textile products made of any combination of natural or manufactured fibers. Either ICP-OES or ICP-MS analysis is recommended as a first step to test for the presence of silver in a textile and results can be used to inform subsequent, more detailed analyses as part of the tiered approach described in Guide E3025 to determine if a textile contains silver nanomaterial(s). 1.2 This test method prescribes acid-assisted dissolution to prepare test solutions from samples of textiles using an appropriate internal standard followed by external calibration and analysis with either ICP-OES or ICP-MS to quantify total silver. 1.3 No detailed instructions for operating suitable ICP instrumentation are provided because of differences among various makes and models. Instead, the analyst shall follow the instructions provided by the manufacturer of their particular instrument. 1.4 This test method is believed to provide quantitative results for textiles made of fibers such as cotton, polyester, and lycra that contain metallic silver. It is the users responsibility to establish the efficacy of this test method for other textile matrices and forms of silver. Alternative sample preparation procedures that may be applicable to other textile matrices and forms of silver are provided in Appendix X1. 1.5 Units--The values stated in SI units are to be regarded as the standard. No other units of measurements are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Keywordssilver; nanomaterials; textiles; optical emission spectrometry; mass spectrometry
Silver nanomaterials are used to treat a wide array of consumer textile products to provide enhanced antimicrobial properties. ASTM Work Item WK37636Back to Top