First Medical Associates’ Primary Care Centers are dynamic, modern practices delivering high-quality, individualized primary care in multiple convenient locations in Rockville, Germantown, Gaithersburg, Columbia, Bowie, Nottingham, Frederick, Severna Park, and Silver Spring, Maryland. We provide a compreh...
One standard reference material was used for analytical quality control (NIST SRM 2710, Montana soil, National Institute of Standards & Technology, 100 Bureau drive Gaithersburg, MD 20899, USA). For all of the digestion sets, recoveries were between 0.80 and 0.93 for Cu, 0.95 and 0.98 for Pb...