Dissolved total hydrolyzable enantiomeric amino acids in precipitation: Implications on bacterial contributions to atmospheric organic matter SCIE SCOPUS

Cited 19 time in WEB OF SCIENCE Cited 21 time in Scopus
Title
Dissolved total hydrolyzable enantiomeric amino acids in precipitation: Implications on bacterial contributions to atmospheric organic matter
Author(s)
Yan, Ge; Kim, Guebuem; Kim, Jeonghyun; Jeong, Yu-Sik; Kim, Young Il
KIOST Author(s)
KIM, YOUNG IL(김영일)
Publication Year
2015-03-15
Abstract
We analyzed dissolved organic carbon (DOC), dissolved organic nitrogen (DON), and dissolved enantiomeric amino acids in precipitation samples collected at two sites in Korea over a one-year period. The average concentrations of DOC, DON, and total hydrolyzable amino acids at Seoul (an inland urban area) were lower than those at Uljin (a coastal rural area). The different bulk compositions of dissolved organic matter (DOM) at these two sites (reflected by qualitative indicators) were mainly attributed to differences in contributing sources. The D-enantiomers of four individual amino acids (aspartic acid, glutamic acid, serine, and alanine) were ubiquitously present, with average enantiomeric (D/L) ratios of 0.34, 0.26, 0.21, and 0.61 for Seoul, and 0.18, 0.11, 0.09, and 0.31 for Uljin, respectively. The much higher D/L ratios observed at Seoul than at Uljin might result from more advanced diagenetic stages as well as higher contributions from bacteria inhabiting terrestrial environments. The C-and N-normalized yields of D-alanine in DOM of our samples were found to be comparable to literature values reported for aquatic systems, where a significant portion of DOM was suggested to be of bacterial origin. Our study suggests that bacteria and their remnants might constitute an important fraction of OM in the atmosphere, contributing significantly to the quality of atmospheric OM and its post-depositional bioavailability in the surface ecosystems. (C) 2015 Elsevier Ltd. All rights reserved.
ISSN
0016-7037
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/2518
DOI
10.1016/j.gca.2015.01.005
Bibliographic Citation
GEOCHIMICA ET COSMOCHIMICA ACTA, v.153, pp.1 - 14, 2015
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
NORTH PACIFIC-OCEAN; 16S RIBOSOMAL-RNA; MARINE AEROSOLS; TROPOSPHERIC AEROSOLS; DIAGENETIC ALTERATION; FOG WATERS; NITROGEN; CARBON; PEPTIDOGLYCAN; PARTICULATE
Type
Article
Language
English
Document Type
Article
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

Distribution and Behavior of Radionuclides in the Ocean,Total Massflux of Singking Particle in East Sea,Material Transport Process in the Ocean

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