In laboratories a common way of determining the
amount of lead in some other media is to separate
the element from the surrounding media and then
oxidize it electrochemically to lead oxide. This,
however, is a method that cannot be recommended
for non-scientists to use. The lead test kits are
only meant to indicate the presence of lead.
Different agencies report different permissible
thresholds for lead content. The highest one is
0.1 mg/m3. This is very low. For all practical
purposes, if the lead test kit can detect lead,
then there is too much lead in the soil. The test
kit that you use should indicate the sensitivity
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