Abstract
Turbidity measurements by foreward scattering nephelometer have been regularly conducted on the north basin of Lake Lugano (Switzerland/Italy) since September 1992. In order to determine mass concentrations from these data, both, in-situ and laboratory calibration experiments have been performed in November and December 1992 on suspended matter of the hypolimnion. Results show:
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1.
Mass concentration/turbidity ratios are different in the two turbidity zones examined due to variation in the optical signature of the suspended matter.
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2.
Laboratory calibrations using suspended matter originating from the water depths of interest give representative results provided that physical and chemical alterations occuring during the particle transfer process remain negligible.
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Hofmann, A., Dominik, J. Turbidity and mass concentration of suspended matter in lake water: A comparison of two calibration methods. Aquatic Science 57, 54–69 (1995). https://doi.org/10.1007/BF00878026
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DOI: https://doi.org/10.1007/BF00878026