Spatiotemporal variation of sterols in sediment as markers of primary production and ocean sewage dumping in the southwestern East Sea (Japan Sea)

被引：3

作者：

Kim, Minkyoung ^{[1
,2
]}

Hwang, Jeomshik ^{[3
]}

Montlucon, Daniel B. ^{[4
]}

Haghipour, Negar ^{[4
,5
]}

Kim, Dongyoung ^{[6
]}

Kim, Ho Jung ^{[1
]}

Choi, Ki Young ^{[7
]}

Kim, Chang Joon ^{[7
]}

Kang, Chang-Keun ^{[6
]}

Kim, Young-Il ^{[8
]}

Eglinton, Timothy I. ^{[4
]}

机构：

[1] Kyungpook Natl Univ, Dept Oceanog, Daegu, South Korea

[2] Kyungpook Natl Univ, KNU Inst Basic Sci, KNU G LAMP Project Grp, Daegu, South Korea

[3] Seoul Natl Univ, Res Inst Oceanog, Sch Earth & Environm Sci, Seoul, South Korea

[4] Swiss Fed Inst Technol Zurich ETHZ, Geol Inst, Zurich, Switzerland

[5] ETHZ, Lab Ion Beam Phys, Zurich, Switzerland

[6] Gwangju Inst Sci & Technol, Sch Earth Sci & Environm Engn, Gwangju, South Korea

[7] Korea Inst Ocean Sci & Technol, Busan, South Korea

[8] Korea Inst Ocean Sci & Technol, East Sea Res Inst, Uljin, South Korea

来源：

MARINE POLLUTION BULLETIN | 2024年 / 205卷

基金：

新加坡国家研究基金会;

关键词：

Coprostanol; Brassicasterol; Dinosterol; Cholesterol; Radiocarbon; Ocean dumping; ORGANIC-CARBON ACCUMULATION; BIOLOGICAL HOT-SPOT; ULLEUNG BASIN; SINKING PARTICLES; SURFACE SEDIMENTS; MARINE-SEDIMENTS; FECAL POLLUTION; GUANABARA BAY; MIXING RATES; MATTER;

D O I：

10.1016/j.marpolbul.2024.116680

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The sedimentation of organic carbon in the Ulleung Basin, in the southwestern East Sea (Japan Sea) was investigated using radiocarbon and sterols. The accumulation rates of organic carbon and the contents of brassicasterol and dinosterol were higher on the slope than in the central basin, reflecting the surface water productivity, whereas cholesterol showed similar or higher contents in the central basin. The coprostanol concentration in surface sediments reflected the dispersion of sewage dumped in this region. The vertical distribution showed that the coprostanol concentration was the highest in the top 5-cm layer near the Korea Strait, close to one of the two dumping sites. A high coprostanol concentration was also found near the coast further north, where the content peaked at similar to 10 cm depth. The vertical distribution of coprostanol helped to estimate the sediment accumulation rate at sites where radiocarbon gradient was too small or the values were too variable.

引用

页数：12

共 87 条

[31] Compound-Specific Radiocarbon Analysis by Elemental Analyzer-Accelerator Mass Spectrometry: Precision and Limitations [J].