Occurrence and distribution of hydroxylated isoprenoid glycerol dialkyl glycerol tetraethe

Occurrence and distribution of hydroxylated isoprenoid glycerol dialkyl glycerol tetraethers (OH-GDGTs) in the Han River system, South Korea

Sujin Kang;Kyoung-Hoon Shin;Jung-Hyun Kim

【期刊名称】《中国地球化学学报（英文版）》 【年(卷),期】2017(036)003

【摘要】We investigated the occurrence and distribution of terrestrial-derived hydroxylated isoprenoid glycerol dialkyl glycerol tetraethers (OH-GDGTs) in the Han River system and their potential impact on the application of the ring index of OH-GDGTs (RI-OH) as a sea surface temperature (SST) proxy in the eastern Yellow Sea.Thereby,we analyzed various samples collected along the Han River and from its surrounding areas (South Korea,n =34).The OH-GDGTs were found in all samples investigated.OH-GDGT-0 was the dominant OH-GDGT component in the estuary and marine samples while OH-GDGT-2 was generally dominant in the soils,the lake sediments and the river suspended particulate matter (SPM).Our results thus suggests a possible warm bias of the RI-OH-derived summer SSTs in the coastal zone to which a large amount of terrestrial organic matter is being supplied.Further studies are necessary to better assess the applicability of the RI-OH proxy in the eastern Yellow Sea. 【总页数】3页(367-369)