公开(公告)号：JPH0783908A

公开(公告)日：1995-03-31

申请号：JP25013293

申请日：1993-09-10

Applicant: TOA ELECTRONICS

Inventor： YOTSUYANAGI TAKAO ,  HOSHINO HITOSHI ,  NOMURA TAKASHI

IPC: G01N30/06 ,  G01N30/74 ,  G01N30/88

Abstract: PURPOSE:To relatively simply determine a small amount of beryllium with an extremely high sensitivity by setting sample ion as a non-dissociation com plex by a specific complex reagent and then' isolating and analyzing the sample liquid containing the complex using liquid chromatography. CONSTITUTION:1-(2,4-dihydroxy-phenylazo)-8-hydroxy-3,6 disulfonaphthalene, or 1-(2-hydroxy-4-diethylamlno 1-phenylazo)-8-hydroxy-3,6-disulfonaphthalene is used as a complex reagent. These two types of complex reagents creates two 6-member rings incorporating beryllium ion and form a complex. The sample liquid containing the complex is injected into the column, the complex is isolated and analyzed by liquid chromatography, and then beryllium concentration is determined. It is desirable to used kinetics discrimination(KD) - HPLC as the HPLC(high performance liquid chromatography) most suited for ultra- high-sensitivity detection of beryllium and beryllium can be determined with the ultra high sensitivity of PPt level.

公开(公告)号：JPH01148961A

公开(公告)日：1989-06-12

申请号：JP30725587

申请日：1987-12-04

Applicant: TOA ELECTRONICS

Inventor： YOTSUYANAGI TAKAO ,  HOSHINO HITOSHI ,  IGARASHI TOSHIO ,  KAWAMURA KUNIO ,  KATSUMATA SADAHIRO

IPC: G01N31/22 ,  C09K3/00

Abstract: PURPOSE:To make it possible to discolor a material in an arbitrarily specified pH range with porphylin having a high mol extinction coefficient as a pH indicator, by supporting and fixing hydrophobic porphylin with water-insoluble macromolecules, and the like. CONSTITUTION:Hydrophobic porphylin is supported and fixed with water- insoluble macromolecules. Or the hydrophobic porphylin and an organic material having positive or negative electric charge are supported and fixed with the water-insoluble macromolecules together. Thus a pH sensitive solid-state material is obtained. As the method for manufacturing the pH sensitive thin film, the water-insoluble macromolecules are dissolved into a solvent such as tetrahydrofuran. This material and porphylin are added. The organic material having the positive or negative charge is further added as required. Thereafter, this is developed on a transparent resin plate, a glass plate or the surface of water. This method is simple. Thus, a very thin film is obtained. In this way, discoloration can be performed in an arbitrarily specified pH range, with porphylin having a high mol extinction coefficient as a pH indicator.