Characterization of Chromophoric Dissolved Organic Matter (CDOM) in Rainwater Using Fluorescence Spectrophotometry
Tóm tắt
The fluorescence excitation–emission matrix of Chromophoric dissolved organic matter (CDOM) samples from rainwater collected at Rameswaram, Tamilnadu, India are analysed. Total five peaks were observed for humic/marine and protein likes substances respectively. The peak A and C intensities varies form 1.98 ± 0.28 and 0.97 ± 0.11 QSU respectively represents humic like substances. The peak B and T intensities varies from 3.94 ± 0.75 and 7.42 ± 1.43 QSU showed association of protein like substances whereas peak M intensities varies from 1.92 ± 0.37 QSU indicates marine contribution. Among the fluorophores, the following sequence were observed as T > B > A > M > C which indicates dominance of Tryptophan like substances in rainwater. The average peak T/C ratios was observed as 7.88 ± 2.2 indicates microbial contamination by Tryptophan-like substances with the high biological activity and low volatility.
Tài liệu tham khảo
Amato P, Menagera M, Sancelmea M, Laj P, Mailhot G, Delort AM (2005) Microbial population in cloud water at the Puy de Dome:implications for the chemistry of clouds. Atmos Environ 39:4143–4153
Baker A, Tipping E, Thacker SA, Gondar D (2008) Relating dissolved organic matter fluorescence and functional properties. Chemosphere 73:1765–1772
Blough NV, Del Vecchio R (2002) Chromophoric DOM in the coastal environment. In: Hansell D, Carlson C (eds) Biogeochemistry of marine dissolved organic matter. Academic Press, San Diego, pp 509–546
Cavalli F, Facchini MC, Decesari S, Mircea M, Emblico L, Fuzzi S, Ceburnis D, Yoon YJ, ODowd CD, Putaud JP, DellAcqua A (2004) Advances in characterization of size-resolved organic matter in marine aerosol over the North Atlantic. J Geophy Res-Atmos 109:D24215–D24219
Coble PG (1996) Characterization of marine and terrestrial DOM in seawater using excitation emission matrix spectroscopy. Mar Chem 51:325–346
Coble PG (2007) Marine optical biogeochemistry: the chemistry of ocean color. Chem Rev 107:402–418
Coble PG, Del Castillo CE, Avril B (1998) Distribution and optical properties of CDOM in the Arabian Sea during the 1995 southwest monsoon. Deep- Sea Res II 45:2195–2223
Ghervase L, Carstea EM, Pavelescu G, Borisiva E, Daskalov A (2010) Fluorescence evaluation of anthropogenic influence of river crossing sofia. Romanian Rep in Phys 62(1):193–201
Hong H, Wu J, Shang S, Hu C (2005) Absorption and fluorescence of chromophoric dissolved organic matter in the Pearl River Estuary, South China. Mar Chem 97:78–89
Huguet A, Vacher L, Relexans S, Saubusse S, Froidefond JM, Parlanti E (2009) Properties of fluorescent dissolved organic matter in the Gironde Estuary. Org Geochem 40:706–719
Keiber RJ, Whitehead RF, Reid SN, Willey JD, Seaton PJ (2006) Chromophoric dissolved organic matter (CDOM) in rainwater, southeastern north Carolina, USA. J Atmos Chem 54:21–41
Kiss G, Tombacz E, Varga B, Alsberg T, Persson L (2003) Estimation of the average molecular weight of humic-like substances isolated from fine atmospheric aerosol. Atmos Environ 37:3783–3794
Mopper K, Schultz CA (1993) Fluorescence as a possible tool for studying the nature and water column distribution of DOC components. Mar Chem 41(1–3):229–238
Muller CL, Baker A, Hutchinson R, Fairchil IJ, Kidd C (2008) Analysis of rainwater dissolved organic carbon compounds using fluorescence spectrophotometry. Atmos Environ 42:8036–8045
Para J, Coble PG, Charriere B, Tedetti M, Fontana C, Sempere R (2010) Fluorescence and absorption properties of chromophoric dissolved organic matter (CDOM) in coastal surface waters of the Northwestern Mediterranean Sea (Bay of Marseilles, France). Biogeosci Discuss 7:5675–5718
Santos PSM, Duarte RMBO, Duarte AC (2009) Absorption and fluorescence properties of rainwater during the cold season at a town in western Protugal. J Atmos Chem 62(1):45–57
Scapini MC, Conzonno VH, Balzaretti VT, Cirelli AF (2010) Comparison of marine and river water humic substances in a Patagonian environment (Argentina). Aquat Sci 72:1–12
Szyrmer W, Zawadzki I (1997) Biogenic and anthropogenic sources of ice- forming nuclei: a review. Bull Amer Meteor Soc 78:209–228
Zhang Q, Anastasio C (2003) Free and combined amino compounds in atmospheric fine particles (PM2.5) and fog waters from Northern California. Atmos Environ 37:2247–2258
Zsolnay A, Baigar E, Jimenez M, Steinweg B, Saccomandi F (1999) Differentiating with fluorescence spectroscopy the sources of dissolved organic matter in soils subjected to drying. Chemosphere 38:45–50