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The main aim of the research was to develop a complementary analytical approach consisting of bespoke speciation analysis and non-targeted speciation analysis of As, Sb, and Cr in flavored bottled drinking water samples using HPLC/ICP-DRC-MS and ESI-MS/MS. The scope of two previously developed analytical procedures, (1) multielemental speciation procedure for As III , As V , Cr VI , Sb III , and Sb V analysis and (2) arsenic speciation procedure for AsB, As III , DMA, MMA, and As V quantification, was extended to the analysis of a new sample type in terms of bespoke speciation analysis. As for the non-targeted speciation, analysis size exclusion chromatography was used with ICP-MS and a complementary technique, ESI-MS/MS, was used for the organic species of As, Sb, and Cr screening. Full validation of procedures 1 and 2 was conducted. Procedure 1 and 2 were characterized with precision values in the range from 2.5% to 5.5% and from 3.6% to 7.2%, respectively. Obtained recoveries ranged from 97% to 106% and from 99% to 106% for procedures 1 and 2, respectively. Expanded uncertainties calculated for procedures 1 and 2 ranged from 6.1% to 9.4% and from 7.4% to 9.9%, respectively. The applicability of the proposed procedures was tested on bottled drinking water samples. Results for the real samples in procedure 1 were in the range from 0.286 ± 0.027 [μg L -1 ] to 0.414 ± 0.039 [μg L -1 ] for As III , from 0.900 ± 0.083 [μg L -1 ] to 3.26 ± 0.30 [μg L -1 ] for As V , and from 0.201 ± 0.012 [μg L -1 ] to 0.524 ± 0.032 [μg L -1 ] for Sb V . Cr VI and Sb III were not detected in any sample. As for procedure 2, results were in the range from 0.0541 ± 0.0053 [μg L -1 ] to 0.554 ± 0.054 [μg L -1 ] for AsB. Results for As III and As V obtained with procedure 2 were in good accordance with results obtained with procedure 1. DMA and MMA were not detected in any sample.

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Study on Speciation of As, Cr, and Sb in Bottled Flavored Drinking Water Samples Using Advanced Analytical Techniques IEC/SEC-HPLC/ICP-DRC-MS and ESI-MS/MS