The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2013
Filed:
Mar. 28, 2011
Atac Tuli, Davis, CA (US);
Jan W. Hopmans, Davis, CA (US);
Tamir Kamai, Davis, CA (US);
Benjamin D. Shaw, Davis, CA (US);
Atac Tuli, Davis, CA (US);
Jan W. Hopmans, Davis, CA (US);
Tamir Kamai, Davis, CA (US);
Benjamin D. Shaw, Davis, CA (US);
The Regents of the University of California, Oakland, CA (US);
Abstract
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 (NO) concentrations. The transflection dip probe may be read with spectrometer with an input deuterium light source.