Evaluation of the nanoparticles contribution to elemental concentration in airborne particulate matter

被引：1

作者：

Canepari, S. ^{[1
]}

Marconi, E. ^{[1
]}

Astolfi, M. L. ^{[1
]}

Perrino, C. ^{[2
]}

Farao, C. ^{[1
]}

机构：

[1] Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy

[2] CNR, Inst Atmospher Pollut IIA, I-00016 Monterotondo, Italy

来源：

PROCEEDINGS OF THE 16TH INTERNATIONAL CONFERENCE ON HEAVY METALS IN THE ENVIRONMENT | 2013年 / 1卷

关键词：

nanoparticles; elements; airborne particulate matter; dimensional distribution;

D O I：

10.1051/e3sconf/20130107004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A method for estimating the contribution of nanoparticles (NPs) to the elemental concentration in airborne particulate matter (PM) is described. The results related to size-segregated samples collected at an urban site show that significant concentrations of Sb, Cd, Pb, As, V and Sn are present in the fine fraction of PM as complex structures in which NPs are aggregated or included in other materials. These structures are easily broken in water media by the application of ultrasounds, leading to a stable suspension of insoluble NPs. The contribution of NPs can be evaluated as the difference between the inductively coupled plasma (ICP-MS) analysis before and after the elution of the stable NPs suspension from an ion exchange cartridge.

引用

页数：3

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