Storage and Pre-Neutron Activation Analysis Treatment for Trace Element Analysis in Urine

Accepted: October 29, 1985 The problems regarding storage and pre-neutron activation analysis treatment for the elements aluminrun. calcium, vanadium, selenium, copper, iodine, zinc, manganese, and magnesium in a urine matrix are reviewed. The type of collection and storage procedure and pre-neutron activation analysis treatment of urine depend on the specific trace element; that is, its inherent physical and chemical properties. Specifically polyethylene in teflon containers are the most suitable for general determinations. Whether any preservative is added would depend upon the stability of the trace element and its tendency for surface adsorption. Preferably preservatives should contain no radioactivatable elements for maximum efficacy. Freeze drying or packing urine shipments under dry ice needs to be explored on an individual basis. Each preor post-neutron activation analysis treatment is specific and optimized for the trace element analyzed.