发明名称 |
METHOD FOR DIRECT MEASUREMENT OF CONCENTRATION OF MOBILE MINERAL FORMS OF PHOSPHORUS IN SOIL SAMPLES DURING EXTRACTION THEREOF WITH CARBON-AMMONIUM EXTRACTANT AND APPARATUS FOR REALISING SAID METHOD |
摘要 |
FIELD: chemistry.SUBSTANCE: carbon dioxide released upon mixing a reagent and a soil extract and which hinders spectrophotometry is first removed by evacuation using a specially designed process cassette, which is characterised by the availability of a special holder which enables to hold cups in the chassis of the cassette, and a vacuum lid whose collector is linked by vacuum channels to each separate container. The design of the cassette and the cassette cover enables to pump carbon dioxide from each heat-resistant cup mounted in the socket of the process cassette. Determination is carried out on a spectrophotometer in the spectral range of 898-900 nm of solutions which are coloured to determine phosphorous using a flow cell.EFFECT: method and design for realisation thereof enable to increase efficiency of analysis and increase accuracy of measuring concentration of mobile mineral forms of phosphorus in soil samples during extraction thereof with a carbon-ammonium extractant.3 cl, 9 dwg |
申请公布号 |
RU2474809(C1) |
申请公布日期 |
2013.02.10 |
申请号 |
RU20110134592 |
申请日期 |
2011.08.18 |
申请人 |
GOSUDARSTVENNOE NAUCHNOE UCHREZHDENIE VSEROSSIJSKIJ NAUCHNO-ISSLEDOVATEL'SKIJ INSTITUT AGROKHIMII IM. D.N. PRJANISHNIKOVA |
发明人 |
BAJBEKOV ROMAN FEDOROVICH;GAZOV VLADISLAV ARNOL'DOVICH;ITSKOV BORIS JAKOVLEVICH;LEPEKHIN JURIJ ALEKSANDROVICH;LOGINOV JURIJ MIKHAJLOVICH;SMIRNOV MIKHAIL OLEGOVICH;STREL'TSOV ALEKSANDR NIKOLAEVICH;POKHLEBKINA LJUDMILA PETROVNA;FROLOV JURIJ VASIL'EVICH |
分类号 |
G01N21/03;G01N33/24 |
主分类号 |
G01N21/03 |
代理机构 |
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代理人 |
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地址 |
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