A new method based on low background instrumental neutron activation analysis for major, trace and ultra-trace element determination in atmospheric mineral dust from polar ice cores

被引：14

作者：

Baccolo, Giovanni ^{[1
,2
,3
]}

Clemenza, Massimiliano ^{[3
,4
]}

Delmonte, Barbara ^{[2
]}

Maffezzoli, Niccolo ^{[5
]}

Nastasi, Massimiliano ^{[3
,4
]}

Previtali, Ezio ^{[3
,4
]}

Prata, Michele ^{[6
]}

Salvini, Andrea ^{[6
]}

Maggi, Valter ^{[2
,3
]}

机构：

[1] Univ Siena, Grad Sch Polar Sci, Via Laterina 8, I-53100 Siena, Italy

[2] Univ Milano Bicocca, Dept Environm Sci, Pzza Sci 1, I-20126 Milan, Italy

[3] Ist Nazl Fis Nucl, Sect Milano Bicocca, Pzza Sci 3, I-20126 Milan, Italy

[4] Univ Milano Bicocca, Dept Phys, Pzza Sci 3, I-20126 Milan, Italy

[5] Niels Bohr Inst, Ctr Ice & Climate, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark

[6] Univ Pavia, LENA, Via Palestro 3, I-27100 Pavia, Italy

来源：

ANALYTICA CHIMICA ACTA | 2016年 / 922卷

关键词：

Low background neutron activation analysis; Ultra-trace analysis; Ice core; Atmospheric mineral dust; INDUCTIVELY-COUPLED PLASMA; FIELD-MASS-SPECTROMETRY; RARE-EARTH-ELEMENTS; PAST 800,000 YEARS; 8 GLACIAL CYCLES; ANTARCTIC ICE; DOME-C; EAST ANTARCTICA; GRAM LEVEL; LAST DEGLACIATION;

D O I：

10.1016/j.aca.2016.04.008

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Dust found in polar ice core samples present extremely low concentrations, in addition the availability of such samples is usually strictly limited. For these reasons the chemical and physical analysis of polar ice cores is an analytical challenge. In this work a new method based on low background instrumental neutron activation analysis (LB-INAA) for the multi-elemental characterization of the insoluble fraction of dust from polar ice cores is presented. Thanks to an accurate selection of the most proper materials and procedures it was possible to reach unprecedented analytical performances, suitable for ice core analyses. The method was applied to Antarctic ice core samples. Five samples of atmospheric dust (mu g size) from ice sections of the Antarctic Talos Dome ice core were prepared and analyzed. A set of 37 elements was quantified, spanning from all the major elements (Na, Mg, Al, Si, K, Ca, Ti, Mn and Fe) to trace ones, including 10 (La, Ce, Nd, Sm, Eu, Tb, Ho, Tm, Yb and Lu) of the 14 natural occurring lanthanides. The detection limits are in the range of 10(-13) - 10(-6) g, improving previous results of 1-3 orders of magnitude depending on the element; uncertainties lies between 4% and 60%. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：11 / 18

页数：8

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