High-Definition X-Ray Fluorescence: Applications

Table 5

Reference and measured values for three polyethylene standards. The experimental uncertainty (at 95% level) includes estimated systematic uncertainty plus Poisson counting statistical error.

Sample		Cr	Hg	Pb	Br	Error
PE_5398_N	Reference	1001	1000	1000	500	4% (95% level)
	Measured	1020	950	981	442	10% (95% level)
PE_H_18A	Reference	1000	1100	1200	1100	4% (95% level)
	Measured	1020	1150	1220	1090	10% (95% level)
PE_L	Reference	400	200	400	500	4% (95% level)
	Measured	401	185	419	508	10% (95% level)