Kinetic Phosphorescence Analyzers for trace level detection of Uranium & Lanthanides

KPA – A Robust Analytical Method

The Kinetic Phosphorescence Analyzer (KPA) is a robust analytical method for trace uranium in nuclear, research, water, environmental, mining, and bioassay applications. It allows fast, easy and economical analysis for trace Uranium and also Lanthanides (Dy, Eu, Sm, Tb, and Tm) in solutions. It produces high specificity, precise (1-5%), and reliable results. Sensitive time resolved phosphorescence technology provides low detection limits down to 0.01 µg/L for uranium and an analytical range greater than 1,000,000.

The ASTM method for uranium in water by pulsed-laser Phosphorimetry (D5174, Vol.11.02, 1994) is based on the KPA instrument. The U.S. EPA has adopted that ASTM method in the National Primary Drinking Water Regulations (40 CFR Part 141.sec. 141.25) The KPA meets the new U.S. Regulated Drinking Water Contaminants Final Rule (EPA 40 CFR Parts 141 and 143, August, 2004) for analyzing by mass.

The KPA is considered by many end users to be the benchmark technology for uranium analysis. The KPA measures trace U (VI) present in solution as uranyl ion UO22+. It produces specific, sensitive, precise, and reliable results. Analysis of one sample typically requires 1 minute to complete once the sample is prepared. Water usually requires no sample preparation. Other sample prep methods are by dilution, wet-ashing or microwave digestion.

The KPA is well regarded by various international and U.S. laboratories for its ease of use, economy in operations, proven reliability, sensitivity, precision and high selectivity. This method is also valued because it does not contribute hazardous chemicals to the end-users' waste stream. Chemchek’s top priority is customer support. KPA end-users agree.

  • International sales for KPA are often to government atomic energy laboratories.

  • International and national uranium mines use KPA to monitor environmental contamination and exposure to the workers.

  • U.S. privately held laboratories doing contract work for trace uranium with few exceptions utilize the KPA for their analysis because it is fast, easy, and economical to operate. KPA easily meets their lab’s need for sensitivity, precision and reliable data.  

  • The KPA is used to monitor and study depleted uranium contamination in biological samples by the military.

  • The nuclear fuel industry uses KPA to monitor process streams and urines of workers.

  • Research departments in some hospitals also use KPA for bioassay purposes.

  • U.S. Department of Energy (D.O.E.) has specified KPA for remediation studies of uranium including groundwater and microbial investigations.

  • U.S. Centers of Excellence in university research receive D.O.E. grants specifying KPA method to do D.O.E. work. 

  • Various labs responsible for providing over sight for health and safety use KPA.

  • KPA is used to monitor process streams such as for uranium in bottled drinking water.  


Chemchek agrees that the superior tool is the one that best suits the task to be performed.  You are the judge of the analytical task and the best tools to use. Please do not hesitate to contact us at sales@chemchek.com if you would like to discuss the KPA application for your task.