M00000303
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ISO 13163 1st Edition, October 15, 2013 Water quality - Lead-210 - Test method using liquid scintillation counting
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Availability date: 07/13/2021
Description / Abstract:
ISO 13163 specifies the determination of lead-210
(210Pb) activity concentration in samples of all types
of water using liquid scintillation counting (LSC). For raw and
drinking water, the sample should be degassed in order to minimize
the ingrowth of 210Pb from radon-222
(222Rn).
Using currently available liquid scintillation counters, this
test method can measure the 210Pb activity
concentrations in the range of less than 20 mBq⋅l-1 to
50 mBq⋅l-1. These values can be achieved with a counting
time between 180 min and 720 min for a sample volume from 0,5 l to
1,5 l.
Higher 210Pb activity concentrations can be measured
by either diluting the sample or using smaller sample aliquots or
both.
It is the laboratory's responsibility to ensure the suitability
of this test method for the water samples tested