Title:
【発明の名称】高感度のイオン測定方法、該方法に適する物質の使用および対応する試薬
Document Type and Number:
Japanese Patent JP2665412
Kind Code:
B2
Abstract:
The present invention relates to a method for determining an ion in an aqueous liquid in which the ion enters a phase which is not miscible with the aqueous liquid and a pH indicator in the latter thereby undergoes a colour change which is used to determine the ion, characterised in that, to increase the measurement sensitivity in the phase which is not miscible with the aqueous liquid, a substance is used from the group of compounds of the general formula I
in which
one of the radicals R<1> to R<4> is a radical from the group comprising the alkyl radicals, alkoxy radicals and aralkyl radicals and the other radicals are identical or different and are in each case a nitro group, halogen, a cyano group, an alkylsulphonyl group or an alkyl group substituted with halogen,
of the general formula II
in which
one of the radicals R<5> to R<9> is a radical from the group comprising the alkyl radicals, alkoxy radicals and aralkyl radicals and the other radicals are identical or different and are in each case a nitro group, halogen, a cyano group, an alkylsulphonyl group or an alkyl group substituted with halogen or, if R<5> and R<6> are nitro groups, R<8> and R<9> may also be hydrogen, and
of the general formula III
in which
R<10>, R<11>, R<12>, R<13>, R<14> are identical or different and are in each case hydrogen, a nitro group, halogen, a cyano group, an alkylsulphonyl group or an alkyl group substituted with halogen, and to the use of suitable compounds for this purpose and a corresponding means.
Inventors:
Walter Rittersdorf
Werner Guetline
Detlef Team
Peter Vogel
Werner Guetline
Detlef Team
Peter Vogel
Application Number:
JP11026691A
Publication Date:
October 22, 1997
Filing Date:
May 15, 1991
Export Citation:
Assignee:
Boehringer Mannheim Gesellschaft Mitt Beschlenktel Haftung
International Classes:
C07C39/26; C07C39/27; C07C39/38; C07C205/24; C07C205/25; C07C205/36; C07C205/37; C07C245/10; C07C255/53; C07C255/66; C07C317/22; C07C317/32; C07C317/46; G01N31/22; G01N33/84; (IPC1-7): G01N31/22
Domestic Patent References:
| JPS49107094A | ||||
| JPH01258649A | ||||
| JPS63204148A | ||||
| JP64047741A | ||||
| JP64040448A | ||||
| JPH01228943A | ||||
| JPS63303958A |
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)