title: Evaluating the performance of the ORTEC® Detective™ for emergency urine bioassay.
abstract: The performance of the ORTEC(®) Detective™ as a field deployable tool for emergency urine bioassay of (137)Cs, (60)Co, (192)Ir, (169)Yb and (75)Se was evaluated against ANSI N13.30. The tested activity levels represent 10 % RL (reference level) and 1 % RL defined by [Li C., Vlahovich S., Dai X., Richardson R. B., Daka J. N. and Kramer G. H. Requirements for radiation emergency urine bioassay techniques for the public and first responders. Health Phys (in press, 99(5), 702-707 (2010)]. The tests were conducted for both single radionuclide and mixed radionuclides at two geometries, one conventional geometry (CG) and one improved geometry (IG) which improved the MDAs (minimum detectable amounts) by a factor of 1.6-2.7. The most challenging radionuclide was (169)Yb. The measurement of the mixture radionuclides for (169)Yb at the CG did not satisfy the ANSI N13.30 requirements even at 10 % RL. At 1 % RL, (169)Yb and (192)Ir were not detectable at either geometry, while the measurement of (60)Co in the mixed radionuclides satisfied the ANSI N13.30 requirements only at the IG.
authors.affiliation: Radiation Protection Bureau, Health Canada, Ottawa, Canada. li.chunsheng@hc-sc.gc.ca
authors.forename: Chunsheng
authors.initials: C
authors.lastname: Li
authors.forename: Raymond
authors.initials: R
authors.lastname: Ko
authors.forename: Gerry
authors.initials: G
authors.lastname: Moodie
authors.forename: Gary H
authors.initials: GH
authors.lastname: Kramer
mesh_terms: D001681:Biological Assay / Q000379:methods*; D002588:Cesium Radioisotopes / Q000032:analysis* / Q000652:urine; D003037:Cobalt Radioisotopes / Q000032:analysis* / Q000652:urine; D004630:Emergencies; D007496:Iridium Radioisotopes / Q000032:analysis* / Q000652:urine; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods; D011868:Radioisotopes / Q000032:analysis / Q000652:urine; D015203:Reproducibility of Results; D012644:Selenium Radioisotopes / Q000032:analysis* / Q000652:urine; D016482:Urinalysis / Q000379:methods; D014556:Urine / Q000737:chemistry*; D015018:Ytterbium / Q000032:analysis* / Q000652:urine
chemical_list: D002588:Cesium Radioisotopes; D003037:Cobalt Radioisotopes; D007496:Iridium Radioisotopes; D011868:Radioisotopes; D012644:Selenium Radioisotopes; D015018:Ytterbium