南沖繩海槽中(1)懸浮物中之脂質(2)微量金屬之海氣交換
Date Issued
2003
Date
2003
Author(s)
鄭偉力
DOI
912611M002008
Abstract
Seven total suspended matter (TSM)
and 14 sediment samples from the
southern Okinawa Trough were
analyzed for aliphatic hydrocarbons,
alkanols and sterols in order to explore
the differences between TSM and
sediments. The percentages of the 7
planktonically-derived hydrocarbon
(PDHC) in TSM ranged from 23% to
62% with an average of 39%.
Compared with the East China Sea,
these values were comparatively low,
probably attributing to the low
productivity in the Okinawa Trough
because Kuroshio water is oligotrophic.
Phytol (78.6 ± 62.1 µg/g) and C22
n-alkanol (81.2±16.3 µg/g) were the
two most significant constituents in the
TSM. The concentrations of C20:1
and C22:1 n-alkenols in TSM were 2.54
± 2.23 µg/g and 7.59 ± 5.43 µg/g,
respectively. The sterol composition
2
of TSM was dominated by
24-methylcholesta-5,22E-dien-3β-ol
(brassicasterol/diatomsterol),
cholest-5-en-3β-ol (cholesterol),
cholesta-5,22E-dien-3β-ol
(22-dehydrocholesterol), and
27-nor-24-methylcholesta-5,22E-dien-
3β-ol. For sediment samples, lower
molecular weight n-alkanes (
Subjects
lipid
suspended matter
Okinawa Trough
Publisher
臺北市：國立臺灣大學海洋研究所
Type
report
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