『Abstract
The distribution of phosphorus species among environmental compartments
(e.g., between water and sediment), significantly affects the
bioavailability of these species to organisms. The eastern Mediterranean
Sea is one of the most extreme oligotrophic oceanic regions on
earth in terms of nutrient concentrations and primary productivity.
The paper presents the results of inorganic and organic forms
in surface sediment and seawater from NE Mediterranean Sea (Burclar
Bay, Erdemli, South Anatolia of Turkey) in May 2007. Speciation
of phosphorus in seawater and surface sediment using inductively
coupled plasma-atomic emission spectrometer (ICP-AES) has been
reported here. The method is based on sequential extractions of
the seawater and sediment each releasing four forms of inorganic
phosphorus: loosely sorbed phosphorus. phosphorus bound to aluminium
(P-Al), phosphorus bound to iron (P-Fe) and phosphorus bound to
calcium (P-Ca).
The most abundant form of inorganic phosphorus in the seawater
and surface sediment is calcium-bound phosphorus. Relative abundances
of the remaining phosphorus forms in sediment follow the order:
P-Al＞P-Fe＞loosely bound-P and in seawater follow the order P-Fe＞P-Al＞loosely
bound-P.
Keywords: Sediment; Phosphorus; Speciation; Mediterranean Sea;
Seawater』
1. Introduction
2. Experimental
3. Results and discussion
4. Conclusions
References
|
μg P／g （±は標準偏差） |
|
|
|
P-mineral （鉱物質全リン） |
201.23±2.13 | 100.00 |
| P-Ca | 161.61±1.02 | 80.31 |
| P-Al | 16.89±0.49 | 8.39 |
| P-Fe | 9.56±0.27 | 4.75 |
|
Loosely bound-P （ゆるく結合したリン） |
9.29±0.32 | 4.62 |
|
μg P／g （±は標準偏差） |
|
|
|
P-mineral （鉱物質全リン） |
1.92±0.012 | 100.00 |
| P-Ca | 1.05±0.025 | 54.69 |
| P-Fe | 0.53±0.009 | 27.60 |
| P-Al | 0.11±0.003 | 5.73 |
|
Loosely bound-P （ゆるく結合したリン） |
0.02±0.001 | 1.04 |