Analysis of Additive Elements in Polymer Using ZSX Primus Series/Application Package - - Spectroscopy
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Analysis of Additive Elements in Polymer Using ZSX Primus Series/Application Package

Application Notebook
pp. 10-11

This application note introduces an Application Package for quantitative analysis of additive elements in polymer. The Application Package includes calibration standards and drift correction samples required for the quantitative analysis, the step-by-step instruction manual, and more. This polymer Application Package makes it easy to set up the quantitative analysis application by the use of polyethylene disk specimens as calibration standards.


Table I: Analysis element and calibration range
The polymer Application Package is applicable to Rigaku sequential wavelength-dispersive XRF spec-trometer, ZSX Primus, ZSX PrimusII, and ZSX Pri-musIII+. For Mg, Na, and F analysis, an optional high-sensitivity crystal RX35 is required. In addition, an optional Ge crystal is needed for the ZSX PrimusIII+. The analysis area is 30 mm in diameter.

Analysis Component and Calibration Range

Table II: Measurement condition
Table I lists the analysis components (elements) and their calibration ranges of this Application Package.

Contents of this Application Package

Figure 1: Outline of polymer Application Package.
The measurement conditions shown in Table II, standard values of six set-up standard samples, various correction coefficients and conditions of two drift correction samples are automatically set by running the installation CD. After the installation, the instruction manual provides simple, step-by-step instructions on how to set up quantitative application, which enables less-experienced users to generate accurate calibration curves. Figure 1 shows the outline of this Application Package.

Sample Preparation

Figure 2: Calibration curves and their accuracies for typical elements.
Before measurement, the analysis surface of each sample is polished using sand paper and then cleaned with ethanol.


The Rigaku ZSX Primus series of sequential wavelength dispersive X-ray fluorescence spectrometers.
Calibration curves and their accuracies for typical elements are shown in Figure 2.

The accuracy of calibration is calculated by the following formula,

C i : calculated value of standard sample
Ĉ i : reference value of standard sample
n : number of standard samples
m : degree of freedom

Repeatability Test

Table III: Repeatability test result
Table III shows the test results of 5-time measurements with sample preparation on the ZSX PrimusII.


Polymer Application Package, introduced in this application note, makes it possible to easily set up calibration for additive elements in polyethylene-base samples. This Application Package is effective to analysis of polymers similar in composition to polyethylene.

Rigaku Corporation
9009 New Trails Drive, The Woodlands, TX 77381
tel. (281) 362-2300, fax (281) 364-3628

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