title: An integrating atomic absorption spectrophotometer for ultramicroanalysis of metals.
mesh_terms: D002118:Calcium / Q000032:analysis; D003300:Copper / Q000032:analysis; D008094:Lithium / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008433:Mathematics; D008670:Metals / Q000032:analysis*; D008832:Microchemistry; D011188:Potassium / Q000032:analysis; D012964:Sodium / Q000032:analysis; D013054:Spectrophotometry, Atomic / Q000379:methods*
chemical_list: D008670:Metals; D003300:Copper; D008094:Lithium; D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium