Counting  81 Kr atoms for analysis of groundwater | Zendy

Lehmann B. E. | Zendy; Oeschger H. | Zendy; Loosli H. H. | Zendy; Hurst G. S. | Zendy; Allman S. L. | Zendy; Chen C. H. | Zendy; Kramer S. D. | Zendy; Payne M. G. | Zendy; Phillips R. C. | Zendy; Willis R. D. | Zendy; Thonnard N. | Zendy

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Counting 81 Kr atoms for analysis of groundwater

Author(s) -

Lehmann B. E.,

Oeschger H.,

Loosli H. H.,

Hurst G. S.,

Allman S. L.,

Chen C. H.,

Kramer S. D.,

Payne M. G.,

Phillips R. C.,

Willis R. D.,

Thonnard N.

Publication year - 1985

Publication title -

journal of geophysical research: solid earth

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.67

H-Index - 298

eISSN - 2156-2202

pISSN - 0148-0227

DOI - 10.1029/jb090ib13p11547

Subject(s) - groundwater , mass spectrometry , ionization , atomic physics , spectroscopy , sensitivity (control systems) , range (aeronautics) , spectrometer , materials science , analytical chemistry (journal) , environmental science , physics , chemistry , geology , environmental chemistry , optics , ion , geotechnical engineering , quantum mechanics , electronic engineering , engineering , composite material

A new analytical technique with sufficient sensitivity to determine 81 Kr concentrations in groundwater is described. The method utilizes single‐atom counting by laser resonance ionization spectroscopy (RIS) in combination with a small mass spectrometer to achieve the required selectivity and sensitivity. A first demonstration of the technique for groundwater analyses is presented in which about 1000 atoms of 81 Kr were counted after the processing of gas extracted from only a few liters of water. The potential of the new method for groundwater dating in the range 50,000 to 1,000,000 years is discussed.

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