Quality Control on Neutron Activation Analysis for Urban Dust by the Proficiency Test

비교숙련도 시험을 통한 도시대기분진에 대한 중성자방사화분석법의 품질관리

  • Received : 2002.07.31
  • Published : 2002.10.25

Abstract

Trace elements in two air filters (V-50, P-50) artificially loaded with urban dust provided from IAEA were determined non-destructively using instrumental neutron activation analysis. Standard reference material (Urban Particulate Matter, SRM 1648) of National Institute of Standard and Technology was used for analytical quality control. About 20 elements in both of loaded filter samples were determined. To evaluate inter-laboratory comparison and proficiency test, analytical data were statistically treated with the results which collected from 49 laboratories, 40 countries participated in this study using neutron activation analysis, particle induced X-ray emission, inductively coupled plasma mass spectroscopy, etc,. From the results of statistical treatment, Z-scores are within ${\pm}2$. Furthermore, accuracy and precision of obtained analytical values are passed according to the criteria of the proficiency test. Consequently, it was proved that analytical quality for air dust samples being performed has been controlled properly.

Keywords

Instrumental Neutron Activation Analysis;Proficiency Test;Urban Dust;Analytical Quality Control

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Acknowledgement

Supported by : 과학기술부