TY - RPRT TI - Evaluation of x-ray florescence analysis for the determination of arsenic, vanadium, cadmium, lead and mercury in various matrices AU - Pella, P A AU - Myklebust, M M AU - Heinrich, F J PY - 1976 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 77-1211 DO - 10.6028/NBS.IR.77-1211 ER -