A critical assessment of the analysis and distributions of scytonemin and related UV screening pigments in sediments

被引：30

作者：

Squier, AH

Hodgson, DA

Keely, BJ ^{[1
]}

机构：

[1] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England

[2] NERC, British Antarctic Survey, Cambridge CB3 0ET, England

来源：

ORGANIC GEOCHEMISTRY | 2004年 / 35卷 / 11-12期

关键词：

D O I：

10.1016/j.orggeochem.2004.07.005

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

High performance liquid chromatography-mass spectrometry has been used to identify the cyanophyta-derived ultraviolet screening pigment scytonemin and its reduced counterpart in an Antarctic lake sediment. The formation of an artefact during the analysis has been demonstrated, enabling the recovery of improved estimates of the scytonemin and reduced scytonemin signals. The overall pigment composition records a primary producer community comprising both oxygenic and anoxygenic photoautotrophs, with variations in the abundance of scytonemin relative to the chlorophylls and carotenoids that are consistent with changes in response to variations in the light regime over time. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1221 / 1228

页数：8

共 33 条

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