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Cyclophosphamide (CP) -N,N-bis(2-chloroethyl)-1,3,2-oxazaphosphinan-2-amine 2-oxide and ifosfamide (IF) -N,3-bis(2-chloroethyl)-1,3,2-oxazaphosphinan-2-amide 2-oxide degradation under UV-Vis/TiO 2 photocatalysis was studied in the following experimental conditions: photocatalyst dose = 100 -800 mg/ L; irradiation time = 30-360 min; initial pollutant concentration = 1 -50 mg/L. CP and IF degradation via TiO 2 photocatalysis was found to obey Langmuir -Hinshelwood model and pollutants degradation rate constants: 5.89 x 10 -6 M min -1 (CP); 4.86 x 10 -6 M min -1 (IF) and pollutants adsorption -desorption on TiO 2 particles equilibrium constants: 5637 M -1 (CP); 4930 M -1 (IF) were calculated.

This paper shows the behavior of natural organic matter (NOM) from drinking water under the influence of ultrasonic radiation. Experimental tests were performed by direct sonolysis of a drinking water source (river water) in order to establish the influence of main parameters (water source composition, irradiation time, energy and amplitude of ultrasonic wave, temperature, pH, conductivity) on NOM efficiency degradation emphasized by total organic carbon (TOC) and CODMn indicators. Likewise, UV-VIS spectra were made for the characterization of degradation processes based on nonconventional parameters A254, A280, A365, SUVA. The experimental results highlight maximum 30% efficiency of NOM removal for short irradiation time, two minutes, diminishing of the ultrasonic wave amplitude leading to removal efficiency increasing (for the same 16 kHz frequency and the same energy of the wave).

The research aimed to provide an optimized method for the determination of phosphorous concentration in different types of solid waste using inductive coupled plasma mass spectrometry (ICP-MS) technique. The analyzed waste matrices are: a) vegetable waste (P1), b) ash from the incineration of medical waste (P2) c) sewage sludge (P3) and d) sludge from the meat processing industry (P4). The results obtained by the ICP-MS method were compared with the UV-VIS spectrophotometric method for the determination of total phosphorus. In the case of using the colorimetric method by UV-VIS technique, lower results were obtained compared to the ICP-MS method due to the interferences given by the reagents used to determine the total phosphorus. The interferences given by other elements (metals) were also investigated and the performance parameters were determined such as detection limit, quantification limit, recovery and expandend incertainty using ICP-MS technique.