Results 181 to 190 of about 1,705,009 (219)
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Mercury-proton spin-spin coupling constants of some methylmercury compounds
Journal of Organometallic Chemistry, 1973Abstract The 199 Hg 1 H spin-spin coupling constants for methylmercury salts of 36 organic acids, CH 3 HgX (where X = OR − , SR − or OOCR − , were determined. A linear relationship between the coupling constants and the p K 's of the monobasic parent acids was found. The magnitudes of the coupling constants are dependent on the type of basic site,
Louis F. Sytsma, Robert J. Kline
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Preparation and structural studies of methylmercury compounds containing amino-deprotonated adenine
Inorganic Chemistry, 1986[(CH 3 Hg) 3 (Ad-2H)]•1/2 H 2 O cristallise dans le systeme monoclinique, groupe d'espace C2/c et sa structure est affinee jusqu'a R=0,050. [(CH 3 Hg) 4 (Ad-2H)] NO 3 cristallise dans le systeme monoclinique, groupe d'espace P2 1 /c avec R=0 ...
Jean Pierre Charland, Andre L. Beauchamp
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Applied Organometallic Chemistry, 1994
AbstractThis review describes determinations of mercury compounds under three categories: total mercury; separate determinations of inorganic mercury(II) and organomercury compounds by selective reduction; and speciation of inorganic mercury(II), monomethylmercury cation, and dimethylmercury. Topics described for each category include sample treatment,
Richard Puk, James H. Weber
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AbstractThis review describes determinations of mercury compounds under three categories: total mercury; separate determinations of inorganic mercury(II) and organomercury compounds by selective reduction; and speciation of inorganic mercury(II), monomethylmercury cation, and dimethylmercury. Topics described for each category include sample treatment,
Richard Puk, James H. Weber
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Journal of Agricultural and Food Chemistry, 1973
Beans, cabbage, carrots, millet, onions, potatoes, and tomatoes were grown on silt loam, gravelly loam, and muck soils treated with 1 and 10 ppm of mercuric chloride, methylmercury dicyandiamide (PAN), or phenylmercuric acetate. Appreciable concentrations of methylmercury were present only in PAN-treated soils and in beans, millet and tomatoes grown on
C A, Bache +5 more
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Beans, cabbage, carrots, millet, onions, potatoes, and tomatoes were grown on silt loam, gravelly loam, and muck soils treated with 1 and 10 ppm of mercuric chloride, methylmercury dicyandiamide (PAN), or phenylmercuric acetate. Appreciable concentrations of methylmercury were present only in PAN-treated soils and in beans, millet and tomatoes grown on
C A, Bache +5 more
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Russian Journal of Developmental Biology, 2006
The effects of natural methylmercury compounds on regeneration of photoreceptor organs were studied in three freshwater planarians: Polycelis tenuis, Dugesia lugubris, and D. tigrina. Accumulation of methyl mercury in the planarian body suppressed regeneration of P.
I V, Medvedev +4 more
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The effects of natural methylmercury compounds on regeneration of photoreceptor organs were studied in three freshwater planarians: Polycelis tenuis, Dugesia lugubris, and D. tigrina. Accumulation of methyl mercury in the planarian body suppressed regeneration of P.
I V, Medvedev +4 more
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Environmental Toxicology and Chemistry, 2001
Abstract Methylmercury (CH3Hg(II)) was measured in various tissues and whole body of sheepshead minnows, Cyprinodon variegatus, following exposure to 100 ng/L methylmercury chloride (CH3HgCl) alone or in combination with one of the organic compounds cysteine (CH3Hg-Cys), thiourea (CH3Hg-Thu), or thioglycolate (CH3Hg-Thg).
J J, Leaner, R P, Mason
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Abstract Methylmercury (CH3Hg(II)) was measured in various tissues and whole body of sheepshead minnows, Cyprinodon variegatus, following exposure to 100 ng/L methylmercury chloride (CH3HgCl) alone or in combination with one of the organic compounds cysteine (CH3Hg-Cys), thiourea (CH3Hg-Thu), or thioglycolate (CH3Hg-Thg).
J J, Leaner, R P, Mason
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The Journal of Physical Chemistry, 1995
pound~~~~~~~~,~~ ,~~~'~ and, in particular, to the type of Hg orbitals involved in the HgX bonding. The prominent role of s-dZz hybridization has been noticed already in the work of Orgel in 1958,20 whereas the involvement of pz orbitals in the bonding has never been fully understood.
BARONE, Vincenzo, BENCINI, A, TOTTI, F.
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pound~~~~~~~~,~~ ,~~~'~ and, in particular, to the type of Hg orbitals involved in the HgX bonding. The prominent role of s-dZz hybridization has been noticed already in the work of Orgel in 1958,20 whereas the involvement of pz orbitals in the bonding has never been fully understood.
BARONE, Vincenzo, BENCINI, A, TOTTI, F.
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Chemosphere, 1999
A good quality control/quality assurance programme should be implemented in all environmental or health related studies on mercury and its organic compounds, particularly, for monomethylmercury (MeHg) which is the most toxic mercury compound. This can be achieved initially by analysing suitable certified reference materials (CRMs), which are available ...
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A good quality control/quality assurance programme should be implemented in all environmental or health related studies on mercury and its organic compounds, particularly, for monomethylmercury (MeHg) which is the most toxic mercury compound. This can be achieved initially by analysing suitable certified reference materials (CRMs), which are available ...
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TrAC Trends in Analytical Chemistry, 1997
Abstract Derivatization by sodium borohydride converts low environmental concentrations of non-volatile, ionic analytes into volatile compounds that can be transported to and separated on chromatographic columns. This review describes hydride derivatization of selected organometallic compounds and their inorganic analogues in complex environmental ...
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Abstract Derivatization by sodium borohydride converts low environmental concentrations of non-volatile, ionic analytes into volatile compounds that can be transported to and separated on chromatographic columns. This review describes hydride derivatization of selected organometallic compounds and their inorganic analogues in complex environmental ...
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Journal of Environmental Sciences
Considerable levels of methylmercury (MeHg) have been found rice-based infant cereals as a result of MeHg transfer from the rice as a raw material to the products, hence consumption of rice products may pose a potential health risk to infants who may receive cereals as the major diets and are susceptible to toxicity of MeHg.
Xin Wang +7 more
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Considerable levels of methylmercury (MeHg) have been found rice-based infant cereals as a result of MeHg transfer from the rice as a raw material to the products, hence consumption of rice products may pose a potential health risk to infants who may receive cereals as the major diets and are susceptible to toxicity of MeHg.
Xin Wang +7 more
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