Zobrazeno 1 - 10
of 16
pro vyhledávání: ''
Publikováno v:
Analytical Sciences. 33:931-938
Direct chemiluminescence emission from the reaction of acidic permanganate and organic compounds was employed for determining the chemical oxygen demand (COD) in water (1-step CL COD). Due to the diversity of organic pollutants in water, there are no
Publikováno v:
Analytical Sciences. 25:639-643
Electrothermal atomic absorption spectrometry (ETAAS) is considered the most common and advanced technique to determine trace lithium in biological fluids. However, chloride existing in samples has been reported to create serious interferences. Nitri
Publikováno v:
Analytical Sciences. 22:1121-1124
The precipitation titration of sodium chloride with electrogenerated silver ion was studied. The production of a precipitate of silver chloride had a significant effect on the titration results because the precipitate involved unreacted chloride or u
Publikováno v:
Analytical Sciences. 19:123-127
The chemiluminescence (CL) intensities of various indole derivatives substituted with a glyoxylyl group at the 3-position and a hydroxyl group at the 5-position of the indole ring were compared upon the addition of H2O2 in alkaline media. The CL inte
Autor:
Weilian Ma, Norimichi Takenaka, Takayo Moriuchi-Kawakami, Yasuhiko Shibutani, Hiroshi Bandow, Keiichi Fujimori, Yasuaki Maeda
Publikováno v:
Analytical Sciences. 17:975-978
A chemiluminescence method with potassium permanganate was developed for use as an indicator of organic pollutants in fresh water. This method could be applied to the determination of organic pollutants in seawater as well. However, the flow chemilum
Publikováno v:
Analytical Sciences. 13:771-775
Mercury in geothermal water samples, pretreated with ozone, was subjected to reduction-vaporization by use of tin(II) chloride. The mercury vapor was concentrated with a porous gold collector. Afterward, mercury vapor which had evolved from the heate
Publikováno v:
Analytical Sciences. 13:471-474
A high performance liquid chromatographic determination of tranexamic acid and two vitamins, i.e., vitamin U chloride and anthranilic acid, with chemiluminescence detection was investigated. o-Phthalaldehyde(OPA) solution which contained 2-mercaptoet
Publikováno v:
Analytical Sciences. 12:947-951
Palladium(II) reacts with halogenide ions, such as chloride ion and bromide ion, to form anionic complexes. The cetylamino groups of chitin are protonated in an acidic medium, acting as an anion exchanger. The property of chitin was applied to the pr
Publikováno v:
Analytical Sciences. 12:477-481
A method has been proposed for the differential determination of inorganic and organic mercury in environmental and biological materials, based on their successive extraction followed by a cold vapor atomic absorption spectrometric (CVAAS) determinat
Autor:
Takunori Katoh, Takayoshi Okanaka, Suwaru Hoshi, Kunihiko Akatsuka, Naoki Nobuyama, Minoru Okumura
Publikováno v:
Analytical Sciences. 12:209-213
An octadecylsilylsilica (C18) column dynamically coated with methyltricaprylylammonium chloride (C18-Aliquat 336) was examined for the preconcentration of trace amounts of Zn in water samples. Zinc was quantitatively retained on the column from an HC