OPTIMIZATION OF THE EXTRACTION CONDITIONS FOR THE Hg2+ - DITHIZONE COMPLEX IN CHLOROFORM AND ITS DETERMINATION BY UV-VIS SPECTROPHOTOMETRY

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creativework.keywordsHg2+- dithizone complex, liquid-liquid extraction, mercury, optimization, UV-Vis
creativework.publisherUniversity of Chemical Technology and Metallurgyen
dc.contributor.authorIvanova V.
dc.contributor.authorMinkova K.
dc.contributor.authorChakarov K.
dc.date.accessioned2026-01-20T13:58:04Z
dc.date.accessioned2026-01-20T15:55:15Z
dc.date.available2026-01-20T13:58:04Z
dc.date.available2026-01-20T15:55:15Z
dc.date.issued2026-01-01
dc.description.abstractThis study aimed to optimize a UV- Vis spectrophotometric method for determining mercury based on its extraction with dithizone in chloroform. In the present work, the effects of pH, reagent concentration, stoichiometry of the complex were investigated. In addition, the sensitivity of the method was determined by calculating the molar absorbance, assessing the linearity and shaking time. Optimal conditions were established at pH ≈ 1.0 ± 0.1, using 4.00 mL of 5.00 mg L-1 dithizone and 1.00 min shaking. Under these parameters, the method showed stable absorbance and reproducible results. The calibration was linear within 0.80 - 1.10 mg L-1 Hg, and recovery tests yielded 71 - 74 % for spiked tap and deionized water samples. The optimized procedure provides reliable preliminary mercury determination and can be further adapted for complex matrices such as sediment, soil, or coal after microwave digestion.
dc.identifier.doi10.59957/jctm.v61.i1.2026.8
dc.identifier.issn1314-7978
dc.identifier.issn1314-7471
dc.identifier.scopusSCOPUS_ID:105026629076en
dc.identifier.urihttps://rlib.uctm.edu/handle/123456789/1948
dc.language.isoen
dc.source.urihttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=105026629076&origin=inward
dc.titleOPTIMIZATION OF THE EXTRACTION CONDITIONS FOR THE Hg2+ - DITHIZONE COMPLEX IN CHLOROFORM AND ITS DETERMINATION BY UV-VIS SPECTROPHOTOMETRY
dc.typeArticle
oaire.citation.issue1
oaire.citation.volume61
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