Zobrazeno 1 - 10 of 44 pro vyhledávání: '"Shinkichi Yamada"'
1
Oxidation of Amino Acids and Aminocarboxylic Acids to Nitrate with Peroxodisulfate
Autor: Shinkichi Yamada, Yu Sakakibara
Publikováno v: BUNSEKI KAGAKU. 57:687-691
As a prior oxidation procedure for the determination of total nitrogen in water based on an electrolytic reduction of nitrate to ammonia, the oxidation of 11 amino acids and 5 aminocarboxylic acids to nitrate with peroxodisulfate was studied spectrop
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::163d193d8e92913bb9c7bbafbef83449
https://doi.org/10.2116/bunsekikagaku.57.687
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3
Kinetic studies on thiolato-ligand substitution reactions with halide ions of square-planar palladium(II) complex with bis(2-(diphenylphosphino)ethyl)phenylphosphine
Autor: Shinkichi Yamada, Yasushi Sone, Tatsuya Kawamoto, Motoshi Nakamura, Sen-ichi Aizawa
Publikováno v: Inorganica Chimica Acta. 338:235-239
The square-planar thiolato palladium(II) complex with a terdentate phosphine bound ligand, [Pd(pt)(p3)](BF4) (p3=bis(2-(diphenylphosphino)ethyl)phenylphosphine, pt=1-propanethiolate) has been synthesized and characterized by 31P NMR spectroscopy. The
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02d02cf92e3867537c722f219248bc0d
https://doi.org/10.1016/s0020-1693(02)00981-7
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4
Thiolato-Ligand Substitution Reaction with Halide Ions of Five-Coordinate Trigonal-Bipyramidal Palladium(II) Complexes with Tris(2-(diphenylphosphino)ethyl)phosphine. Electronic and Steric Effects on the Reaction Mechanism
Autor: Takashi Iida, Tatsuya Kawamoto, Motoshi Nakamura, Shigenobu Funahashi, Shinkichi Yamada, Yasushi Sone, Sen-ichi Aizawa
Publikováno v: Bulletin of the Chemical Society of Japan. 75:91-97
Mononuclear and dinuclear thiolato complexes with five-coordinate trigonal-bipyramidal palladium(II), [Pd(pt or tt)(pp3)](BF4) and [Pd2(pdt)(pp3)2](BF4)2 (pp3 = tris(2-(diphenylphosphino)ethyl)phosphine, pt = 1-propanethiolate, tt = α-toluenethiolat
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::473f02b5c8912e80fa23b54f9ee2e777
https://doi.org/10.1246/bcsj.75.91
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5
Relation of sorption behavior of agricultural chemicals in solid-phase extraction with their n-octanol/water partition coefficients evaluated by high-performance liquid chromatography (HPLC)
Autor: Ken-ichi Amano, Shinkichi Yamada, Motoshi Nakamura, Takayuki Suzuki
Publikováno v: Analytica Chimica Acta. 428:219-226
The HPLC method for the evaluation of the n -octanol/water partition coefficients ( P ow ) of agricultural chemicals was investigated, and the P ow values of 46 agricultural chemicals were determined by the proposed method. Then the sorption behavior
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::75b8e94fab99b5e63b671ad503657fc8
https://doi.org/10.1016/s0003-2670(00)01250-2
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6
Fluorometric determination of asulam in water by using solid-phase extraction
Autor: Shinkichi Yamada, Tetsuya Igarashi, Motoshi Nakamura, Tomoko Yasukawa, Sen-ichi Aizawa
Publikováno v: BUNSEKI KAGAKU. 49:65-68
A fluorometric determination method for asulam(methyl4-aminosulphonylcarbamate, herbicide) in environmental water samples by using solid-phase extraction(SPE) has been proposed. The method is based on the addition of EDTA to a sample solution for the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4374bf88264b28eba2acf2abd9b397f0
https://doi.org/10.2116/bunsekikagaku.49.65
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7
Complexation reaction of organotins with 3-hydroxyflavone and its application to their fluorometric determination
Autor: Sen-ichi Aizawa, Toshihiro Asano, Shinkichi Yamada, Motoshi Nakamura
Publikováno v: BUNSEKI KAGAKU. 48:549-553
モノフェニルスズ(MPT),ジメチルスズ(DMT),ジブチルスズ(DBT),ジフェニルスズ(DPT),トリメチルスズ(TMT),トリブチルスズ(TBT)及びトリフェニルスズ(TPT)と3-ヒドロキシフラボンとの蛍光性錯体生
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2680a75ea88466b930f5a95849af842a
https://doi.org/10.2116/bunsekikagaku.48.549
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8
Inclusion Reaction of Some Fluorophores with β-Cyclodextrin and Its Effect on Their Reversed-Phase HPLC Retention
Autor: Motoshi Nakamura, Katsunori Murabayashi, Shinkichi Yamada
Publikováno v: Analytical Sciences. 14(5):897-901
The thermodynamics of the inclusion reaction of flavonol, 7-methoxyflavonol and 4-phenyl-7-hydroxycoumarin (L) with β -cyclodextrin (CD) has been studied fluorometrically with special reference to the effect of organic solvents (S). The equilibrium
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18bb9b213460f126278d4348cdc474c0
http://hdl.handle.net/10297/2460
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10
Conditions for solid-phase extraction of agricultural chemicals in waters by using n-octanol–water partition coefficients
Autor: Masatoshi Nakamura, Shinkichi Yamada, Motoshi Nakamura
Publikováno v: The Analyst. 121:469-475
The solid-phase extraction behaviour of 25 aromatic compounds and 20 agricultural chemicals was investigated in a reversed-phase system using eight Sep-Pak cartridges. The recovery was related closely to their n-octanol–water partition coefficients
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::93a950b6d1cc45d02d886a6dec57cab8
https://doi.org/10.1039/an9962100469
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