Measurement of Brass Sample

Measurement Example of Environmentally Restricted Substances

Measurement of Brass Sample

High sensitive measurement conducted with SEA1200VX enables significantly better “limit of detection” and superior repeatability.

[ Measurement of lead (Pb) in Brass]

Excellent linearity of a calibration curve for brass created at optimal measurement conditions achieves a detection lower limit of Pb 16 ppm at a measuring time of 300 seconds.

(Brass sample made by Sumitomo Metal Technology）

[ Measurement of cadmium (Cd) in Brass]

Excellent linearity of the calibration curve was also obtained at optimal measurement conditions resulting in an excellent detection lower limit of 5 ppm Cd at a measuring time of 300 seconds.

（Brass sample made by Sumitomo Metal Technology ）

[ Measurement of chromium (Cr) in Brass]

An superior detection lower limit of 18ppm at 300 seconds was achieved at optimal measurement conditions.

（Brass sample made by Sumitomo Metal Technology ）

[ Repeatability at 100 seconds measurement]

The table below shows high repeatability using a brass standard sample: CV 6.3% for Cd, CV 3.6% for Pb, and CV 9.0% for Cr.

< Measurement Conditions >

Voltage :	50kV（Cd, Pb）, 15kV（Cr）
Current :	1000μA（Cd）, 273μA（Pb）, 353μA（Cr）
Collimator :	φ8mm
Filter :	for Cd, for Pb, & for Cr
Time :	100 sec

< Standard Sample >
Brass GBR6 made by Sumitomo Metal Technology

	Cd	Pb	Cr
Ave. (ppm)	129	492	149
Readings	20
STDEV (ppm)	8.2	17.7	13.5
CV%	6.3	3.6	9.0
Results (ppm)	136	505	157