Preliminary study of HCHO spatial and temporal distribution from coastal to plateau areas in Antarctica

被引：1

作者：

Largiuni, O ^{[1
]}

Castellano, E ^{[1
]}

Migliori, A ^{[1
]}

Traversi, R ^{[1
]}

Piccardi, G ^{[1
]}

Udisti, R ^{[1
]}

机构：

[1] Univ Florence, Dept Chem, I-50121 Sesto Fiorentino, Italy

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2004年 / 84卷 / 6-7期

关键词：

formaldehyde; flow analysis; Antarctica; snow;

D O I：

10.1080/03061310310001640375

中图分类号：

O65 [分析化学];

学科分类号：

070302 [分析化学]; 081704 [应用化学];

摘要：

Formaldehyde concentrations were determined in over 1800 snow samples (snowpit, firn cores and superficial snow) from Antarctica by a sensitive spectrofluorimetric Flow Injection Analysis method. The method performances (detection limit: 55 ng/L; reproducibility: 2.5% at 1 mug/L level; linear range: 0.1-3000 mug/L) allowed a reliable determination of formaldehyde content in all the collected samples. The range of determined concentrations was 0-70 mug/L with a mean concentration of 7.7 mug/L and a median concentration of 5.8 mug/L. The formaldehyde background level was estimated at a few micrograms per liter in coastal and plateau areas of Northern Victoria Land. In some stations the background values are modulated by HCHO deposition events recurring over relatively large time periods.

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收藏

页码：537 / 549

页数：13

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