Hiroshi Namiki

Spectrophotometric determination of cationic surfactants in water samples containing anionic surfactants.

Determination of total nitrogen in seawater by ion chromatography using a high-capacity anion exchange column and a UV-detector.

Spectrophotometric determination of cationic surfactants in water with an anionic dye-Disulphine Blue.

Special Articles: Environmental Sciences and Analytical Chemistry. Spectrophotometric determination of total nitrogen in seawater by elimination of interference from bromide with solid phase adsorption column.

Preconcentration for the determination of trace metals in highly purified water.

Spectrophotometric determination of nitrate ion and total nitrogen in water using Cu-Zn column.

Heating effects on sample decomposition by peroxodisulfate for determination of total phosphorus in water.

Separation of cationic surfactants from a large amount of anionic surfactants with anionic exchange.

Elution behavior of divalent anions in ion chromatography using a high concentration NaCl solution as an eluent.

Weight titration with equivalence point detection by using personal computer : certification of commercial metal standard solution