Research Papers
Development of Powdered Polyethylene Reference Materials for X-Ray Fluorescence Analysis of Hazardous Elements
2008 Volume 57 Issue 6 Pages 411-415
Details
2008 Volume 57 Issue 6 Pages 411-415
A preparation of new powdery reference materials (RM) was developed for X-ray fluorescence (XRF) analysis of trace amount of Cr, Br, Cd and Pb in polyethylene. Polyethylene powder coated with silane coupling agent were disparsed in the methanol containing appropriate amount of CrCl3, Cd(NO3)2, Pb(NO3)2 and tetrabromobisphenol-A (TBBPA). The emalsion was dried and homogenized by rotaly evapolater. The resultant polyethylene powder had a homogeneous elemental distribution and excellent durability for X-ray irradiation. XRF intensity of Hg was remarkably decreased with increase of irradiation time. The calibration curves of Cr, Br, Cd and Pb made by developped RM showed a good linearity. The lower limits of detection of the present method were Cr : 3.9, Br : 3.2, Cd : 5.7, Pb : 1.7 mg kg−1. Certified reference materials of plastic (BCR680, 681) were analyzed to verify the proposed polyethylene RM. Analytical results for Cr, Br, Cd and Pb using calibration with proposed RM were in good agreement with the certified and reference values.
