Bulk Chemical and Optical Spectroscopy Characterisations of Dissolved Organic Matter Extracted from the Tropical Coastal Sediment
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area, Sample Collection and Sample Pre-Treatment
2.2. Bulk Marine Sediment Analysis
2.3. Extraction of DOM from Marine Sediment
2.4. UV-Vis Spectroscopy Characterization
2.5. Fluorescent Spectroscopy
2.6. Attenuated Total Reflectance Infrared ATR-FTIR Analysis
2.7. Statistical Analysis
3. Results
3.1. Properties of Bulk Marine Sediment
3.2. Elemental Analysis of DOM
3.3. DOC in Extracted DOM
3.4. UV-Visspectroscopy Analysis
3.5. Fluorescent Properties of DOM
3.6. DOM ATR-FTIR Spectra
4. Discussion
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Station | Longitude | Latitude | Depth of Water Column (m) | Description |
---|---|---|---|---|
Kuala Selangor (KS) | 101°18′05.5″ E | 3°13′48.5″ N | 15 m | 3 km from estuary with mangrove forest Fishing village, aquaculture pond |
Kuala Terengganu (KT) | 103°09′23.2″ E | 5°20′36.9″ N | 15 m | 5 km off Kuala Terengganu river mouth |
Kuantan (K) | 103°22′39.2″ E | 3°48′28.3″ N | 15 m | 2 km of Kuantan port |
Station | TOC(g/kg) Mean (±SD) | Grain Distribution % | Sediment Classification USDA | Total Acidic Group (mmol/g) | COOH Group (mmol/g) | Phenolic Group (mmol/g) | pH | ||
---|---|---|---|---|---|---|---|---|---|
Clay | Silt | Sand | |||||||
KS | 1.25 ± 0.73 | 46 | 20 | 34 | Clay | 7.34 | 4.12 | 3.22 | 7.45 |
KT | 0.83 ± 0.30 | 10 | 24 | 66 | Sandy loam | 6.52 | 3.60 | 2.55 | 7.56 |
K | 1.08 ± 1.04 | 37 | 31 | 32 | Clay loam | 6.23 | 3.50 | 2.73 | 7.81 |
Station | C (%) | H (%) | N (%) | O (%) | H/C a | O/C b | C/N c |
---|---|---|---|---|---|---|---|
KS | 28.60 | 30.20 | 1.60 | 39.61 | 1.06 | 1.38 | 17.88 |
KT | 30.40 | 15.01 | 3.52 | 48.64 | 0.49 | 1.58 | 8.69 |
K | 33.10 | 35.83 | 2.72 | 27.53 | 1.08 | 0.90 | 11.04 |
Station | UV-Visible Indices | Fluorescent Indices | ||||||
---|---|---|---|---|---|---|---|---|
SUVA254 | E2/E3 | E4/E6 | A355 | SR | HIX | FI | BIX | |
KS | 5.44 ± 0.08 | 8.32 | 4.32 | 3.43 | 0.13 | 1.63 ± 0.03 | 0.95 ± 0.08 | 0.67 ± 0.02 |
K | 4.75 ± 0.09 | 10.71 | 6.50 | 2.77 | 0.07 | 1.36 ± 0.02 | 1.10 ± 0.07 | 0.62 ± 0.01 |
KT | 4.19 ± 0.08 | 18.43 | 8.64 | 3.98 | 0.59 | 1.20 ± 0.02 | 1.58 ± 0.09 | 1.27 ± 0.12 |
SUVA254 | E2/E3 | E4/E6 | A355 | HIX | BIX | FI | |
---|---|---|---|---|---|---|---|
SUVA254 | 1 | ||||||
E2/E3 | −0.926 * | 1 | |||||
E4/E6 | −0.984 * | 0.946 * | 1 | ||||
A355 | −0.316 | 0.606 * | 0.339 | 1 | |||
HIX | 0.979 * | −0.905 * | −0.982 * | −0.235 | 1 | ||
BIX | −0.878 * | 0.946 * | 0.895 * | 0.627 * | −0.825 * | 1 | |
FI | −0.904 * | 0.957 * | 0.906 * | 0.597 * | −0.866 * | 0.898 * | 1 |
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Dzulkafli, N.F.; Mahdzir, A.; Hara, H. Bulk Chemical and Optical Spectroscopy Characterisations of Dissolved Organic Matter Extracted from the Tropical Coastal Sediment. J. Mar. Sci. Eng. 2021, 9, 997. https://doi.org/10.3390/jmse9090997
Dzulkafli NF, Mahdzir A, Hara H. Bulk Chemical and Optical Spectroscopy Characterisations of Dissolved Organic Matter Extracted from the Tropical Coastal Sediment. Journal of Marine Science and Engineering. 2021; 9(9):997. https://doi.org/10.3390/jmse9090997
Chicago/Turabian StyleDzulkafli, Noor Fazreen, Akbariah Mahdzir, and Hirofumi Hara. 2021. "Bulk Chemical and Optical Spectroscopy Characterisations of Dissolved Organic Matter Extracted from the Tropical Coastal Sediment" Journal of Marine Science and Engineering 9, no. 9: 997. https://doi.org/10.3390/jmse9090997