کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6315738 | 1619161 | 2016 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Air-sea exchange of gaseous mercury in the East China Sea
ترجمه فارسی عنوان
مبادله هوا و دریا از جیوه گازی در دریای چین شرقی
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کلمات کلیدی
جیوه عنصری گاز جیوه گاز محلول تبادل هوا و دریا، دریای چین شرقی،
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
شیمی زیست محیطی
چکیده انگلیسی
Two oceanographic cruises were carried out in the East China Sea (ECS) during the summer and fall of 2013. The main objectives of this study are to identify the spatial-temporal distributions of gaseous elemental mercury (GEM) in air and dissolved gaseous mercury (DGM) in surface seawater, and then to estimate the Hg0 flux. The GEM concentration was lower in summer (1.61 ± 0.32 ng mâ3) than in fall (2.20 ± 0.58 ng mâ3). The back-trajectory analysis revealed that the air masses with high GEM levels during fall largely originated from the land, while the air masses with low GEM levels during summer primarily originated from ocean. The spatial distribution patterns of total Hg (THg), fluorescence, and turbidity were consistent with the pattern of DGM with high levels in the nearshore area and low levels in the open sea. Additionally, the levels of percentage of DGM to THg (%DGM) were higher in the open sea than in the nearshore area, which was consistent with the previous studies. The THg concentration in fall was higher (1.47 ± 0.51 ng lâ1) than those of other open oceans. The DGM concentration (60.1 ± 17.6 pg lâ1) and Hg0 flux (4.6 ± 3.6 ng mâ2 hâ1) in summer were higher than those in fall (DGM: 49.6 ± 12.5 pg lâ1 and Hg0 flux: 3.6 ± 2.8 ng mâ2 hâ1). The emission flux of Hg0 from the ECS was estimated to be 27.6 tons yrâ1, accounting for â¼0.98% of the global Hg oceanic evasion though the ECS only accounts for â¼0.21% of global ocean area, indicating that the ECS plays an important role in the oceanic Hg cycle.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Pollution - Volume 212, May 2016, Pages 535-543
Journal: Environmental Pollution - Volume 212, May 2016, Pages 535-543
نویسندگان
Chunjie Wang, Zhijia Ci, Zhangwei Wang, Xiaoshan Zhang,