Determination of sodium cations in atmospheric particles

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Tufts, Barbara J. ; Hunemuller, F. J. (2011)

A method of detecting sodium ion in atmospheric particles using the magnesium salt of 8-amino-l-naphthalenesulfonic acid is described. The preparation of the reagent is outlined. The reaction product appears as small clusters of soft white or brownish-white needles, which may be readily identified under the optical microscope. A calibration curve is given for the particle-reaction site ratio, using sodium chloride as the calibrating material. Results of field tests of the method are presented.DOI: 10.1111/j.2153-3490.1962.tb01343.x
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