The determination of mercury in organic compounds

Gouverneur, P.; Hoedeman, W.

doi:10.1016/s0003-2670(00)88761-9

Cited by 26 publications

(7 citation statements)

References 13 publications

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“…The mercury content in the complexes was determined by complexometric titration, with sodium diethyl dithiocarbamate, of the solution obtained after decomposition of the specimen in aqua regia. [28] CHNS analyses were performed in the Analytical Services Laboratories of the Institute Ruder Boškovic. The IR spectra were obtained from KBr pellets in the range 4000Ϫ450 cm Ϫ1 with a PerkinϪElmer FTIR 1600 spectrometer.…”

Section: Methodsmentioning

confidence: 99%

Mercury(II) Complexes with Heterocyclic Thiones − Preparation and Characterization of the 1:1 and 1:2 Mercury(II) Complexes with Benzo-1,3-imidazole-2-thione

Popović

Soldin

Matković‐Čalogović

et al. 2002

Eur. J. Inorg. Chem.

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A series of complexes HgX2(bzimtH2) and HgX2(bzimtH2)2 (X = Cl−, Br−, I−, SCN−; bzimtH2 = benzo‐1,3‐imidazole‐2‐thione) was obtained by reaction of the mercury(II) salts with benzo‐1,3‐imidazole‐2‐thione in the appropriate molar ratio (1:1 or 1:2). Hg(bzimtH)2 was obtained by the deprotonation of bzimtH2 with mercury(II) acetate (irrespective of the molar ratio of the reactants). The complexes were characterised by chemical and thermal analysis, IR, 1H, and 13C NMR spectroscopy, and some [HgX2(bzimtH2), X = I− and HgX2(bzimtH2)2, X = I− and SCN−] by X‐ray single crystal diffractometry. 1H and 13C NMR spectroscopic measurements in dimethyl sulphoxide revealed that the sulphur atom is coordinated to the mercury centre. The greatest complexation effects on the chemical shifts were observed for the thione carbon atom and thioamide proton. The crystal structures of HgI2(bzimtH2)2 and Hg(SCN)2(bzimtH2)2·C2H5OH consist of discrete monomeric molecules with halide or pseudohalide donor atoms and thione sulphur atoms tetrahedrally coordinated to the mercury atom. The structure of HgI2(bzimtH2) is polymeric with a trigonal bipyramidal 3 + 2 coordination geometry around the mercury atom. Polymerisation occurs through Hg···I interactions with neighbouring molecules. The distribution of the π‐electron density in bzimtH2 corresponds to the thioketo tautomeric form in the solid state, and also in the DMSO solution of the complexes. Intermolecular hydrogen bonds of the type N−H···N, N−H···S and N−H···I are observed.

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Section: Methodsmentioning

confidence: 99%

Mercury(II) Complexes with Heterocyclic Thiones − Preparation and Characterization of the 1:1 and 1:2 Mercury(II) Complexes with Benzo-1,3-imidazole-2-thione

Popović

Soldin

Matković‐Čalogović

et al. 2002

Eur. J. Inorg. Chem.

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“…Elemental analysis (C, H and N) were performed in the Central Analytical Laboratory of the Ru − der Bošković Institute, Zagreb. The mercury content in the organomercurial compounds was determined by complexometric titration with sodium diethyldithiocarbaminate of the solution obtained after decomposition of the specimen in aqua regia [18].…”

Section: Methodsmentioning

confidence: 99%

“…An aqueous solution of Hg(OCOCH 3 ) 2 (0.30 g, 0.94 mmol in 10 mL H 2 O; with few drops of 2 M acetic acid) was added to a solution of 3-methylpyrazoline-5-one (0. 18 …”

Section: Mercuration Products Of 3-methylpyrazoline-5-onementioning

confidence: 99%

On the interaction between mercury(II) salts and 3-methylpyrazoline-5-one. The first crystal structure of a cyclic organomercuric compound with a dimercurated methylenic carbon atom

et al. 2006

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Synthesis and characterization of two types of novel organomercury derivatives of 3-methylpyrazoline-5-one (MepzH 2 -one), (XHg) 2 (MepzH-one) (X = Cl − , Br − ) and Hg(MepzH-one) 2 are described. The 1 H and 13 C NMR data revealed existence of dimercurated compounds in the dimethylsulfoxide-d 6 solution. NMR spectra confirmed that the mercuration took place at the C-4 atom of the pyrazole ring. X-ray crystal structure analysis of 4,4-bis(chloromercurio)-3-methylpyrazoline-5-one revealed almost linear coordination of both mercury atoms [Hg-C 2.099(6) and 2.104(5) Å; Hg-Cl 2.330(2) and 2.338(2) Å; C-Hg-Cl 171.1(2) and 174.4(2) • ]. The slight deviation from linearity is caused by contacts with nitrogen or oxygen atoms from the neighbouring molecule [Hg· · ·N 2.768(5) and Hg· · ·O 2.748(5) Å]. The molecules are interconnected by hydrogen bonds N-H· · ·Cl of 3.286(5) Å.

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“…Four combustion agents, naphthalene, phenanthrene, cellulose acetate, and graphite, were tested. First, the contents of Hg in these agents were examined by the OFC method followed by CVAFS, which has been successfully used for the decomposition of organic matters [15,16] and coal [9] to determine total Hg. Except phenanthrene, the other three agents have high Hg contents, 0.034 g g −1 for naphthalene, 0.032 g g −1 for cellulose acetate, and 0.125 g g −1 for graphite, which will cause errors in the accurate determination of total Hg in ash and soil, especially for those with low Hg contents.…”

Section: Determination Of Hg In Cfa and Soil By Use Of The Developed mentioning

confidence: 99%

Determination of mercury in ash and soil samples by oxygen flask combustion method–Cold vapor atomic fluorescence spectrometry (CVAFS)

Geng

Nakajima

Takanashi

et al. 2008

Journal of Hazardous Materials

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The determination of mercury in organic compounds

Cited by 26 publications

References 13 publications

Mercury(II) Complexes with Heterocyclic Thiones − Preparation and Characterization of the 1:1 and 1:2 Mercury(II) Complexes with Benzo-1,3-imidazole-2-thione

Mercury(II) Complexes with Heterocyclic Thiones − Preparation and Characterization of the 1:1 and 1:2 Mercury(II) Complexes with Benzo-1,3-imidazole-2-thione

On the interaction between mercury(II) salts and 3-methylpyrazoline-5-one. The first crystal structure of a cyclic organomercuric compound with a dimercurated methylenic carbon atom

Determination of mercury in ash and soil samples by oxygen flask combustion method–Cold vapor atomic fluorescence spectrometry (CVAFS)

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