SE9201801L - Indicator stick for phosphate analysis of soil samples - Google Patents

Indicator stick for phosphate analysis of soil samples

Info

Publication number
SE9201801L
SE9201801L SE9201801A SE9201801A SE9201801L SE 9201801 L SE9201801 L SE 9201801L SE 9201801 A SE9201801 A SE 9201801A SE 9201801 A SE9201801 A SE 9201801A SE 9201801 L SE9201801 L SE 9201801L
Authority
SE
Sweden
Prior art keywords
phosphate
soil
strip
soil samples
test
Prior art date
Application number
SE9201801A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE470144B (en
SE9201801D0 (en
Inventor
Kjell Persson
Original Assignee
Kjell Persson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kjell Persson filed Critical Kjell Persson
Priority to SE9201801A priority Critical patent/SE9201801L/en
Publication of SE9201801D0 publication Critical patent/SE9201801D0/en
Priority to DE4392711A priority patent/DE4392711C2/en
Priority to DE4392711T priority patent/DE4392711T1/en
Priority to PCT/SE1993/000462 priority patent/WO1993025900A1/en
Publication of SE470144B publication Critical patent/SE470144B/en
Publication of SE9201801L publication Critical patent/SE9201801L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
    • G01N33/50—Chemical analysis of biological material, e.g. blood, urine; Testing involving biospecific ligand binding methods; Immunological testing
    • G01N33/52—Use of compounds or compositions for colorimetric, spectrophotometric or fluorometric investigation, e.g. use of reagent paper and including single- and multilayer analytical elements
    • G01N33/525—Multi-layer analytical elements
    • G01N33/526—Multi-layer analytical elements the element being adapted for a specific analyte
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/221—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating pH value

Abstract

Equipment for analyses of phosphate in soil samples. At occasions it is desirable to measure the content of phosphate in the soil already in the field. This desire has been satisfied by preparing a plastic test-strip (1) with ascorbic acid (3) and a porous layer, impregnated with ammonia-heptamolybdate (4). When the soil is leached with 1.2 M HC1 and the test-strip is immersed in the acid, the phosphate from the soil reacts with the molybdate, and a blue colour is developed, which intensity is proportional to the content of phosphate. Then the test-strip can be compared to a colour scale, which has been made with standard series.
SE9201801A 1992-06-11 1992-06-11 Indicator stick for phosphate analysis of soil samples SE9201801L (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9201801A SE9201801L (en) 1992-06-11 1992-06-11 Indicator stick for phosphate analysis of soil samples
DE4392711A DE4392711C2 (en) 1992-06-11 1993-05-26 Indicator strip for phosphate in soil
DE4392711T DE4392711T1 (en) 1992-06-11 1993-05-26 Indicator test strips for phosphate analyzes
PCT/SE1993/000462 WO1993025900A1 (en) 1992-06-11 1993-05-26 Indicator test-strip for phosphate analyses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9201801A SE9201801L (en) 1992-06-11 1992-06-11 Indicator stick for phosphate analysis of soil samples

Publications (3)

Publication Number Publication Date
SE9201801D0 SE9201801D0 (en) 1992-06-11
SE470144B SE470144B (en) 1993-11-15
SE9201801L true SE9201801L (en) 1993-11-15

Family

ID=20386473

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9201801A SE9201801L (en) 1992-06-11 1992-06-11 Indicator stick for phosphate analysis of soil samples

Country Status (3)

Country Link
DE (2) DE4392711T1 (en)
SE (1) SE9201801L (en)
WO (1) WO1993025900A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5858797A (en) * 1997-06-05 1999-01-12 Environmental Test Systems, Inc. Test composition, device and method for the colorimetric determination of phosphorus
CN100504355C (en) * 2004-04-02 2009-06-24 中国科学院生态环境研究中心 Biological effective phosphor determining method
JP6167669B2 (en) * 2013-05-30 2017-07-26 東亜ディーケーケー株式会社 Phosphate measurement kit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160008A (en) * 1978-01-26 1979-07-03 Miles Laboratories, Inc. Multilayered test device for determining the presence of a liquid sample component, and method of use

Also Published As

Publication number Publication date
WO1993025900A1 (en) 1993-12-23
DE4392711C2 (en) 1995-08-31
DE4392711T1 (en) 1995-02-23
SE470144B (en) 1993-11-15
SE9201801D0 (en) 1992-06-11

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