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Table 3 Parameters measured in manure at different stages and methods applied

From: Results of extended plant tests using more realistic exposure scenarios for improving environmental risk assessment of veterinary pharmaceuticals

Parameter Method Determined during sampling (1), end of storage (2), end of acclimation (3)
pH Direct measurement in liquid manure 1, 2, 3
Temperature Direct measurement in liquid manure 1, 2, 3
Redox potential Direct measurement in liquid manure 1, 2, 3
Dry matter content Drying of subsamples of 10-g fresh mass at 105 °C overnight in a drying chamber. Quantification by weighting 2, 3
Microbial activity For testing the microbial activity several suggestions exist. In this case it was mineralisation of 14C-labeled glucose under anaerobic conditions 3
NH4-N content Ammonium-N, purge and trap-method. Quantification by titration [10] 3
Nonvolatile N content Analysis of dried manure by determination with element analyser after combustion 3
Total N content Calculation by addition of NH4–N content and nonvolatile N content 3
Organic C content Analysis of dried manure by determination with element analyser after combustion 3
Total P content Extraction of trace elements soluble in aqua regia [11] and phosphor quantification by ICP-OES with a matrix adjusted calibration [12] 3
Total Cu content Extraction of trace elements soluble in aqua regia [10] and phosphor quantification by ICP-OES with a matrix adjusted calibration [12]. Copper quantification by ICP-OES with a matrix adjusted calibration 3