The natural 36Cl (t1/2=3.01 × 105 a) as a geochrometer and long-live radioisotope tracer has its potential applications in geoscience. Accelerator mass spectrometry (AMS)is the most important tool for detection of naturally produced long-lived radioisotope. Absolute AMS-measurements of 36Cl require reliable standards for calibration. This original solution of RM12492 was diluted for new AMS standards. All dilution solutions weremade gravimetrically.
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