Relationships between ultraviolet absorbance and total organic carbon in two upland catchments |
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| Affiliation: | 1. School of Computer Science and Engineering, Central South University, Changsha, China;2. Department of Computing, Hong Kong Polytechnic University, Hong Kong, China;1. Department of Physics, UFS, Bloemfontein ZA-9300, South Africa;2. Laser Department, National Institute for Laser, Plasma, and Radiation Physics, Bucharest-Magurele, Romania;1. Central Scientific Instruments Organisation (CSIR-CSIO), Chandigarh 160030, India;2. Institute of Analytical and Bioanalytical Chemistry, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany;1. Department of Civil Engineering and Architecture, University of Catania, Via A. Doria, 6, 95125 Catania, Italy;2. Department of Chemical Sciences, University of Catania, Via A. Doria, 6, 95125 Catania, Italy;3. Agenzia Regionale per la Protezione Ambientale (ARPA), Struttura territoriale di Siracusa, Via Bufardeci, 22, 96100 Siracusa, Italy |
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| Abstract: | Regression equations relating u.v. absorbance to total organic carbon (TOC) in river water are compared for streams draining two upland catchments in north-east Scotland which have similar climate, topography and land use but contrasting acidic and basic parent materials. A comparison is also made of regression equations for individual tributaries contributing to the main streams in each catchment. Reasons for observed differences are suggested. Changes in u.v. absorbance vs TOC relationships through storm events are discussed, and the problems associated with using TOC/absorbance relationships to monitor changes in TOC with time through storms are briefly considered. |
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