title: An ultramicro method for analysis of lithium and other biologically important cations.
abstract: A new method for Li+ analysis by flameless atomic absorption spectroscopy is several orders of magnitude more sensitive than previous methods. Li+ quantities as small as 1 - 10(-12) mol, or Li+ concentrattions as low as 1 - 10(-8) M, can determined with a coeffient of variation of 2--4%. The same technique can determine approx. 1 - 10(-14) mol of Ca2+ and Mg2+, and approx. 1 - 10(-13) mol of Na+ and K+.
mesh_terms: D002412:Cations / Q000032:analysis*; D008094:Lithium / Q000032:analysis*; D008832:Microchemistry; D013054:Spectrophotometry, Atomic
chemical_list: D002412:Cations; D008094:Lithium