... of fraction with the concentration levels of the pharmaceuticals diclofenac and carbamazepine In contrast, the toxicity of fractions 1, 3, and was probably caused by organic contaminants in additional ... For the quantitation of the analytes, a 5-point (PAHs) and a 7-point (pharmaceuticals) internal standard calibration was used The limit of detection and the LOQ were calculated on the basis of ... directly as a function of flow conditions [6,7] Because alterations in flow conditions affect the chemical composition of wastewater in the influent and effluent of the STP in a number of ways, a significant...