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Trends of the first-order degradation rate constant of ibuprofen (left Y axis) and of the corresponding half-life time (right Y axis), as a function of water loss due to evaporative concentration. The weights of the different photoreaction pathways are highlighted in different colors. Initial water conditions for do = 10 m: 10−4 mol·L−1 NO3−, 10−6 mol·L−1 NO2−, 10−3 mol·L−1 HCO3−, and 10−5 mol·L−1 CO32−. Raw data were obtained with Savetable and further processed.
