ALEXANDRIA, Va., June 12 -- United States Patent no. 12,298,291, issued on May 13, was assigned to THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK (Albany, N.Y.).

"Nitrogen sensor apparatus for simultaneously measuring nitrate/nitrite and ammonium in wastewater and method of operating same" was invented by Qingzhi Zhu (Stony Brook, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A detection system and method for simultaneously determining the concentration of ammonium and nitrate/nitrite in samples such as surface water and wastewater. The detection system and method herein can further comprise a cleaning loop and a calibration loop and can be used in situ and over long periods of time witho...