Standard Test Method for Determination of Elemental Content of Polyolefins by Wavelength Dispersive X-ray Fluorescence Spectrometry
|Publication Date:||1 October 2018|
|ICS Code (Manufacturing processes in the rubber and plastics industries):||83.020|
This test method covers a general procedure for the determination of elemental content in polyolefins by wavelength-dispersiv
TABLE 1 Mass Fraction Ranges for Additive and Trace Elements in Polyolefins
Element Lower Limit (mg/kg) Upper Limit (mg/kg) Fluorine 100 300
Sodium 25 200
Magnesium 10 600
Aluminum 40 500
Silicon 30 1000
Phosphorus 5 200
Sulfur 20 200
Calcium 10 300
Titanium 5 200
Chromium 5 100 Zinc 10 1000
This test method does not apply to polymers specifically formulated to contain flame retardants including brominated compounds and antimony trioxide.
This test method does not apply to polymers formulated to contain high levels of compounds of vanadium, molybdenum, cadmium, tin, barium, lead, and mercury because the performance can be strongly influenced by spectral interferences or interelement effects due to these elements.
NOTE 1-Specific methods and capabilities of users may vary with differences in interelement effects and sensitivities, instrumentation and applications software, and practices between laboratories. Development and use of test procedures to measure particular elements, mass fraction ranges or matrices is the responsibility of individual users.
NOTE 2-One general method is outlined herein; alternative analytical practices can be followed, and are attached in notes, where appropriate.
The values stated in SI units are to be regarded as the standard.
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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Section 10.
NOTE 3-There is no known ISO equivalent to this standard.
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
A Summary of Changes section appears at the end of this standard