Monitoring trace elements by nuclear techniques in PM10 and PM2.5

被引：21
|
作者：
Freitas, MC [1 ]
Almeida, SM [1 ]
Reis, MA [1 ]
Oliveira, OR [1 ]
机构：
[1] Inst Tecnol & Nucl, P-2686953 Sacavem, Portugal
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2003年 / 505卷 / 1-2期
关键词：
PM2.5; PM10; nuclear techniques; iron; potassium; zinc;
D O I：
10.1016/S0168-9002(03)01114-8
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
As part of a contract for air quality monitoring at an urban waste incinerator neighborhood, measurements of PM10 and PM2.5 are being routinely evaluated. Two samples are collected for 24 h at the weekend and a working day, using a, Gent collector, which separates the particulate in two fractions: PM2.5 and PM2.5-10. Filters are polycarbonate Nuclepore, sized 47 mm, which, for analysis, are cut as: one half to be analyzed by instrumental neutron activation analysis (INAA) and one quarter for proton induced X-rays emission (PIXE). Both techniques are multielemental. determining together around 25 chemical elements. Comparison of results is just possible for potassium, iron and zinc, which are compared in this work. A better agreement is obtained in PM2.5 suggesting a homogeneity trend. Fe and K compare quite well and Zn may show quite different results. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：430 / 434
页数：5
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