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All Journal Indonesian Journal of Chemistry
Khudhair, Ahmed Fadhil
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Chemical Engineering, Chemistry & Bioengineering Chemistry

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Synthesis of New Dithiocarbamate Derivative Reagent for Micro Extraction and Determination of Iron(II) Ion in Aqueous Solution Shaker, Ivan Malik; Khudhair, Ahmed Fadhil; Mihsen, Hayder Hamied
Indonesian Journal of Chemistry Vol 24, No 4 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.87422

Abstract

The new reagent N-methyl-N-((((4-chlorophenyl)diazenyl)thio)carbonothioyl)aniline (L) was synthesized via the reaction of sodium N-methyl-N-phenyldithiocarbamate with 4-chlorobenzenediazonium salt. The reagent was identified with many techniques, such as CHNS elemental analysis, UV-vis spectroscopy, FTIR spectroscopy, mass spectroscopy, 1H-NMR, and 13C-NMR spectroscopy. The Fe(II) ion was utilized to create a metal complex by reacting 2 mol of reagent with 1 mol of iron(II) chloride. Two approaches that were utilized for M:L ratio determination are mole ratio and Job methods. All of these refer to the 1:2 ratio for the complex. The solid complex was prepared and identified with the previous techniques, and additional electrical molar conductivity, and magnetic susceptibility measurements. A tetrahedral structure for the prepared complex was suggested based on spectroscopic measurements and elemental analysis results. Cloud point extraction was created for the preconcentration and separation of Fe(II) in drug samples by forming a rich phase using Triton X-114 at 80 °C temperature and pH 5 measurements utilizing flame atomic absorption spectroscopy and UV-vis spectrophotometer at λmax 635 nm. The calibration curve of Fe(II) was linear in the extent of 0.2–1.0 μg/mL with r2 of 0.996. The detection limit and quantification are 0.0504 and 0.1530 μg/mL.
Evaluation of Lead Ion in the Wastewater of the Lifting and Treatment Stations Using ICP-MS and CPE Methods Hussain, Mohammed Nasser; Khudhair, Ahmed Fadhil; Ahmed, Hussain Jawad
Indonesian Journal of Chemistry Vol 24, No 3 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.87545

Abstract

To pre-concentrate trace amounts of lead before determining it by UV-vis spectrophotometer, a new method for micelle-mediated phase separation has been created. The process depends on the extraction of lead from iodine media using Triton X-114 in the cloud point extraction method without the need for any chelating agents, where the optimal conditions for the method were achieved, which temperature 50 °C, pH 4, and 30 mmol L−1 concentration of KI, 0.3 mL of 2% (v/v) Triton X-114, and time of 10 min in the water bath. Linearity was followed between 1 and 16 µg/mL of lead concentration. The method's lead detection limit is 0.1 µg/mL and %RSD 3.633. Additionally, the interference impact of certain cations was evaluated. The proposed technique was successfully applied to determine the lead ion in the wastewater in ten different stations in the center and district of Al-Hur in Karbala City. The lead ion of the wastewater of the stations under study was also determined directly using inductively coupled plasma-mass spectrometry (ICP-MS) technology comparing its results with the new method and performing the statistical analysis of both methods. The p-value was less than 0.05, showing significant differences between both methods.
Co-Authors Ahmed, Hussain Jawad Hussain, Mohammed Nasser Mihsen, Hayder Hamied Shaker, Ivan Malik