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Lead Analysis Using NIST Standards


A DELTA handheld XRF analyzer, configured in SmartShot Soil analysis mode, was used to measure Lead (Pb) in four NIST soil matrix standards and a blank. As shown below, analysis spectra can be easily overlaid and compared using the Delta PC Software. Here the user has zoomed in on the Pb La and Lb peaks for direct comparison.

Delta Handheld XRF in docking station


 

Data Results

 

Analysis results for the NIST standards are shown at right.

A 60 second measurement time was used.

Results shown in ppm.

+/- error shown is 2-sigma, 95% confidence.

NIST Std Pb Value Given Pb Value Measured +/- Measured
SiO2 Blank 0 <2 -
NIST 2702 132.8 135 4
NIST 2709 18.9 20.2 1.9
NIST 2710 5525 5587 39
NIST 2711 1162 1158 11


 

A DELTA handheld XRF analyzer, configured in SmartShot soil analysis mode, was used to run repeat measurements on a reference soil sample, to demonstrate repeatability. As shown below, the DELTA PC Software can be used to overlay spectra from different readings for direct comparison and analysis.

Delta Handheld XRF Analyzer


 

Data sample results

 

A reference sample spiked with approximately 500ppm Pb (sample 408) was used for these repeat readings.

Each reading was analyzed for 60 seconds.

+/- error shown is 2-sigma, 95% confidence.

Sample Run Pb ppm Value +/-
1 511 7
2 512 7
3 514 7
4 521 7
5 514 7
AVG 514 7


 

Olympus IMS

应用所使用的产品
用于环境检测的DELTA手持式XRF分析仪在几秒钟之内可检测出RCRA(《资源保护及恢复法案》)中所规定的危险性高含量元素、需优先考虑的污染物质及危险金属。手持式XRF用于根据EPA 6200和其它SOP,对土壤和沉淀物进行检测分析,根据NIOSH或OSHA方式进行过滤:筛检表面并测量尘扫中的铅、镉、铬、砷、汞及其它元素。
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