CORRELATION OF ISOCONCENTRATION PROFILES RESOLUTION OF WATER PARAMETERS WITH ON-SITE SAMPLING METHODOLOGY

Water parameters screening is a constant request for conservation state evaluation in protected areas. Classic methods are using sampling stages and laboratory transfer for instrumental analysis process. Related to analytical data request, new on-site methods were developed, from the basic water parameter measurements (like those used in CTD (Conductivity-Temperature-Depth Sampler) or multiparameter extended sensor based system) to the detection of organic pollutants trace levels, like those used in the high performance on-site UW-MS (Underwater Mass Spectometer) systems. The aim of our work was to evaluate sampling point variability and to compare the data point resolution differences by using classical and new on-site screening methods. Isoconcentration profiles of water parameters linked to a conservation state study for protected areas at Black Sea border were used for this purpose. The sampling expeditions and on-site screening stages were performed in two seasons: 2011 and 2012. Both methods were used: laboratory analysis for advanced water parameters and on-site screening for basic parameters, using CTD (multiparameter) and AUV systems.