Novel Preservation Methods for Inorganic Arsenic Speciation in Model and Natural Water Samples by Stripping Voltammetric Method

In this study, the preservation of As(III) in model solutions and natural groundwater samples from four locations Croatia was conducted. Model laboratory were spiked with As(V), different complexing agents. Solutions analysed intervals 24, 48 h during ten days after preparation. containing citric acid, sodium citrate, oxalate potassium tartrate combination acetic As(III)and showed good species preservation. As(III), samples, preserved for 7 acid as well tartrate. 6 to 12 tartrate, improvement, compared unpreserved (oxidation 3 days). The results that alone not successful preserving As speciation. Good resolution inorganic arsenic achieved using differential pulse anodic stripping voltammetry technique (DPASV). Since is comparatively cheaper more convenient use than other available techniques it could become a method choice speciation water.