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- Selective determination of sparteine by thermochromism of associates with tetrabromophenolphthalein ethyl ester. T. Sakai, N. Ohno
, Analyst
, 1981
, 106
, 584
- Solvent extraction–spectrophotometric determination of berberine and benzethonium in drugs with tetrabromophenolphthalein ethyl ester by batchwise and flow injection methods. Tadao Sakai
, Analyst
, 1991
, 116
, 187
- Spectrophotometric determination of trace amounts of copper in steel, stainless steel and aluminium alloys with 2,2′-biquinolyl and tetrabromophenolphthalein ethyl ester. Tadao Sakai, Noriko Ohno, Shigekazu Tsurubo, Masaya Tanaka, Masahiro Horigome
, Analyst
, 1984
, 109
, 1043
- Spectrophotometric determination of histamine in mast cells, muscle and urine by solvent extraction with copper(II) and tetrabromophenolphthalein ethyl ester. Tadao Sakai, Noriko Ohno, Masaya Tanaka, Toyohiko Okada
, Analyst
, 1984
, 109
, 1569
- High-sensitivity extraction-spectrophotometric determination of iron with 3-(2-pyridyl)-5,6-diphenyl-1,2,4-triazine and tetrabromophenolphthalein ethyl ester. Shigekazu Tsurubou, Tadao Sakai
, Analyst
, 1984
, 109
, 1397
- Use of thermochromism of associates for the determination of antihistamine drugs in pharmaceutical preparations and urine. T. Sakai, N. Ohno
, Analyst
, 1982
, 107
, 634
- Simultaneous spectrophotometric determination of dibucaine and chlorpheniramine maleate in pharmaceuticals using thermochromism of ion associates. T. Sakai
, Analyst
, 1982
, 107
, 640
- Photometric titration of small amounts of cationic surfactants in an aqueous medium. Shoji Motomizu, Yun-hua Gao, Kouji Uemura, Shinsuke Ishihara
, Analyst
, 1994
, 119
, 473
- Spectrophotometric determination of quaternary ammonium salts by a flow injection method coupled with thermochromism of ion associates. Tadao Sakai
, Analyst
, 1992
, 117
, 211
- Improved determination of methamphetamine, ephedrine and methylephedrine in urine by extraction-thermospectrometry. Tadao Sakai, Noriko Ohno
, Analyst
, 1987
, 112
, 149