Preliminary results on low molecular weight organic substances dissolved in the waters of the Gulf of Gdańsk

• Autorzy: Grzybowski W. , Pempkowiak J.
• Języki publikacji: EN

Abstrakty

EN

The content of low molecular weight LMW (<1000 Da) dissolved organic substances was determined by ultrafiltration (concentration factor of 2) in different water samples collected in the Gulf of Gdańsk. The proportion of this fraction (based on organic carbon concentration) ranged from 24 to 57%. The lowest percentage was detected in riverine samples. The DOC concentrations in ultrafiltrates was similar in all the samples analysed. The absorbance proportion (at 250 nm) due to the low molecular fraction in the overall absorbance ranged from 14 to 45% and in all but one sample was lower than the DOC percentage. There was no relationship between DOC and absorbance in the LMW fractions (r2 = 0.08), in contrast to the characteristics of the "bulk" samples (r2 = 0.88).

Słowa kluczowe

EN

dissolved organic carbon; low molecular weight fraction; ultrafiltration; absorbance

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2003
• Tom: No. 45 (4)
• Strony: 693--704
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Grzybowski W.

• Institute of Oceanography, University of Gdańsk, al. Marszałka Piłsudskiego 46, PL-81-378 Gdynia, Poland

autor

Pempkowiak J.

• Institute of Oceanology, Polish Academy of Sciences, Powstańców Warszawy 55, PL-81-712 Sopot, Poland

Bibliografia

• [1] Amon R. M. W., Benner R., 1994, Rapid cycling of high-molecular-weight dissolved organic matter in the ocean, Nature, 369, 549-552.
• [2] Amon R. M. W., Benner R., 1996, Bacterial utilization of different size classes of dissolved organic matter, Limnol. Oceanogr., 41 (1), 41-56.
• [3] Buesseler K. O., Bauer J. E., Chen R. F., Eglinton T. I., Gustafsson O., Landing W., Mopper K., Moran S. B., Santschi P. H., Vernon Clark R., Wells M. L., 1996, An intercomparison of cross-flow filtration techniques used for sampling marine colloids: Overview and organic carbon results, Mar. Chem., 55, 1-31.
• [4] Carlson D. J., Brann M. L., Mague T. H., Mayer L. M., 1985, Molecular weight distribution of dissolved organic materials in seawater determined by ultrafiltration: a re-examination, Mar. Chem., 16, 155-171.
• [5] Cheryan M., 1998, Ultrafiltration and microfiltration handbook, Technomic Publ. Co., Lancaster, PA, 526 pp.
• [6] Dai M., Benitez-Nelson C. R., 2001, Colloidal organic carbon and 234Th in the Gulf of Maine, Mar. Chem., 74, 181-196.
• [7] Dai M., Buesseler K. O, Ripple P., Andrews J., Belastock R. A., Gustafsson Ö., Moran S. B., 1998, Evaluation of two cross-flow ultrafiltration membranes for isolating marine organic colloids, Mar. Chem., 62, 117-136.
• [8] Dai M., Martin J., Cauwet G., 1995, The significant role of colloids in the transport and transformation of organic carbon and associated trace metals (Cd, Cu and Ni) in the Rhone delta (France), Mar. Chem., 51, 159-175.
• [9] Ferrari G. M., Dowell M. D., Grossi S., Targa C., 1996, Relationship between optical properties of chromophoric dissolved organic matter and total concentration of dissolved organic carbon in the southern Baltic Sea region, Mar. Chem., 55, 299-316.
• [10] Grzybowski W., 1996, Preliminary results of dissolved organic carbon concentration measurements in the Vistula river mouth using high-temperature catalytic oxidation, Oceanologia, 38 (3), 395-403.
• [11] Guo L., Coleman Ch. H., Santschi P. H., 1994, The distribution of colloidal and dissolved organic carbon in the Gulf of Mexico, Mar. Chem., 45, 105-119.
• [12] Guo L., Santschi P. H., 1996, A critical evaluation of the cross-flow ultrafiltration technique for sampling colloidal organic carbon in seawater, Mar. Chem., 55, 113-127.
• [13] Guo L., Santschi P. H., Warnken K. W., 1995, Dynamics of dissolved organic carbon (DOC) in oceanic environments, Limnol. Oceanogr., 40 (8), 1392-1403.
• [14] Guo L., Wen L.-S., Tang D., Santschi P. H., 2000, Re-examination of cross-flow ultrafiltration for sampling aquatic colloids: evidence from molecular probes, Mar. Chem., 69 (1)-(2), 75-99.
• [15] McCarthy M., Hedges J., Benner R., 1996, Major biochemical composition of dissolved high molecular weight organic matter in seawater, Mar. Chem., 55, 281-297.
• [16] Miller A. E. J., Mantoura R. F. C., Suzuki Y., Preston M. R., 1993, Preliminary study on DOC in the Tamar Estuary, UK, using UV-persulphate and HTCO techniques, Mar. Chem., 41, 223-228.
• [17] Pempkowiak J., Widrowski H., Kuliński W., 1984, Dissolved organic carbon and particulate carbon in the southern Baltic in September 1983, pp. 699-713, Proc. 14th Conf. Baltic Oceanogr., Gdynia.
• [18] Pęcherzewski K., Ławacz W., 1976, Preliminary results of investigations on the quantity of dissolved and pariculate organic carbon in the waters of the southern Baltic, Zesz. Nauk. Uniw. Gdańsk., Oceanografia, 4, 25-44, (in Polish).
• [19] Powell R. T., Landing W. M., Bauer J. E., 1996, Colloidal trace metals, organic carbon and nitrogen in a southeastern U.S. estuary, Mar. Chem., 55, 165-176.
• [20] Sempéré R., Cauwet G., 1995, Occurrence of organic colloids in the stratified estuary of the Krka river (Croatia), Estuar. Coast. Shelf Sci., 40 (1), 105-114.
• [21] Sholkovitz E., 1976, Flocculation of dissolved organic and inorganic matter during the mixing of river water and sea water, Geochim. Cosmochim. Acta, 36, 834-845.
• [22] Skoog A., Benner R., 1997, Aldoses in various size fractions of marine organic matter: implications for carbon cycling, Limnol. Oceanogr., 42 (8), 1803-1813.
• [23] Takayanagi K., Wong G. T. F., 1984, Organic and colloidal selenium in southern Chesapeake Bay and adjacent waters, Mar. Chem., 14, 141-148.
• [24] Vodacek A., Blough N. V., DeGrandpre M. D., Peltzer E. T., Nelson R. K., 1997, Seasonal variation of CDOM and DOC in the Middle Atlantic Bight: terrestrial inputs and photo-oxidation, Limnol. Oceanogr., 42, 674-686.
• [25] Wen L.-S., Santschi P., Gill G., Paternostro Ch., 1999, Estuarine trace metal distribution in Galveston Bay: importance of colloidal forms in the speciation of the dissolved phase, Mar. Chem., 63, 185-212.
• [26] Whitehouse B. G., Macdonald R. W., Iseki K., Yunker M. B., McLaughlin F. A., 1989, Organic carbon and colloids in the Mackenzie River and Beaufort Sea, Mar. Chem., 26, 371-378.