Simultaneous measurement of picomolar zirconium, hafnium, niobium and tantalum in seawater using commercially available chelating resin and subsequent ICP-MS determination

被引：7

作者：

Firdaus, M. Lutfi ^{[1
]}

Mashio, Asami S. ^{[2
]}

Kim, Taejin ^{[3
,6
]}

Muhammad, Ronald ^{[3
]}

McAlister, Jason A. ^{[4
]}

Obata, Hajime ^{[3
]}

Gamo, Toshitaka ^{[3
]}

Khaydarov, Renat ^{[5
]}

机构：

[1] Univ Bengkulu, Grad Sch Sci Educ, Bengkulu 38371, Indonesia

[2] Kanazawa Univ, Coll Sci & Engn, Kanazawa, Ishikawa 9201192, Japan

[3] Univ Tokyo, Atmosphere & Ocean Res Inst, Chiba 2778564, Japan

[4] Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC V6T 1Z4, Canada

[5] Uzbek Acad Sci, Inst Nucl Phys, Tashkent 100214, Uzbekistan

[6] Seoul Natl Univ, Seoul, South Korea

来源：

GEOCHEMICAL JOURNAL | 2018年 / 52卷 / 05期

基金：

日本学术振兴会;

关键词：

Zr; Hf; Nb; Ta; seawater; UTEVA; solid-phase extraction; ICP-MS; TRACE-ELEMENTS; NB; ZR; TA; HF; EXTRACTION; MO;

D O I：

10.2343/geochemj.2.0533

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

In the present study, a novel and simple method to measure picomolar to subpicomolar dissolved Zr, Hf, Nb and Ta in seawater is described. The method provides a preconcentration step (250 times) by mini-column filled with a commercially available chelating resin. The proposed method has a lower blank and better precision than previous methods. Furthermore, using a more dilute hydrofluoric acid as eluent, the new method quantitatively recovered (97-102%) all of these elements spiked in seawater. Determination of Zr, Hf, Nb and Ta in North Pacific seawater at 100 m depth were 39, 0.14, 2.4 and 0.03 pmol/kg, respectively. These results are consistent with previous reports. Finally, we applied the proposed method to seawater samples taken from the North Atlantic Ocean during the U.S. GEOTRACES expedition and report the results for the first time in this paper.

引用

页码：427 / 431

页数：5