VERTICAL PROFILES OF TOTAL ORGANIC CARBON AND POLAR ORGANIC COMPOUNDS IN THE ICE CORE FROM SITE-J, GREENLAND

• Main Authors: カワムラ キミタカ, ヨコヤマ カズヒサ, フジイ ヨシユキ, Kimitaka KAWAMURA, Kazuhisa YOKOYAMA, Yoshiyuki FUJII
• Format: Report
• Language: English
• Published: Department of Chemistry, Faculty of Science, Tokyo Metropolitan University 1992
• Subjects: Greenland; ice core; Polar meteorology and glaciology; Proceedings of the NIPR Symposium on Polar Meteorology and Glaciology
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3743; http://id.nii.ac.jp/1291/00003743/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3743&item_no=1&attribute_id=18&file_no=1

Forty two sections from a 206m long ice core (ca. 450yr old at the bottom) were studied for total organic carbon (TOC) content and distributions of polar organic compounds including C_2-C_<10> dicarboxylic acids, C_2-C_4 oxocarboxylic acids, C_2-C_3 aldehydes and C_<14>-C_<18> fatty acids. TOC contents in the ice core samples ranged from 0.7 to 5.7ppm (μg/g-ice) : however, no clear trend was observed in the vertical profile. Concentration ranges of total diacids, oxoacids, aldehydes and fatty acids were 3.1-32.4,0.1-2.6,0.09-1.7 and 0.01-11.1 ng/g-ice, respectively. Vertical profiles of diacids and fatty acids showed peaks at 6.9 and 32-35m depths.