1.Application of Duall-wavelength Spectrophotomatry to the Ore Analysis VI.Study of the K Factor Method Dual-wavelength Spectrophotometry Simultaneous Determination of Microgram Amounts of Zr and Hf with Oxidized P-hydroxyph -enyl Fluorone and Cety
2.In contrast, TIMS method is both precise and sensitive allowing the analysis of microgram quantities of chlorine. Large fractionation of Cl isotopes occurs in nature with δ~ 37 Cl variation about 15‰(-8.0‰ ~ 7.5‰).
