发明名称 |
In-situ soil nitrate ion concentration sensor |
摘要 |
A method and apparatus for near real-time in-situ soil solution measurements is presented. An outer sleeve is placed in soil where ionic concentrations of organic or inorganic species are to be measured. A porous section connects with the outer sleeve (the porous section initially loaded with distilled water) equilibrates with the solution present in soil pores to form a solution to be measured. The initial distilled water is displaced within the porous section by a removable plunger. After substantial equilibration of the solution to be measured within the apparatus, the plunger is removed and a removable probe replaced. The probe may be an Ion Selective Electrode, or a transflection dip probe. The probe then may be used under computer control for measurement of solution properties. The Ion Selective Electrode may measure nitrate (NO3−) concentrations. The transflection dip probe may be read with spectrometer with an input deuterium light source.
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申请公布号 |
US7927883(B2) |
申请公布日期 |
2011.04.19 |
申请号 |
US20080267895 |
申请日期 |
2008.11.10 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
TULI ATAC;HOPMANS JAN W.;KAMAI TAMIR;SHAW BENJAMIN D. |
分类号 |
G01N33/00;G01N21/33;G01N27/04;G01N27/333;G01N33/24 |
主分类号 |
G01N33/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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