| Summary: | 碩士 === 高雄醫學院 === 公共衛生學研究所 === 84 === Wild small mammals were live-trapped near Kaohsiung harbour and
Penghuareas. The concentration of blood and bone lead were
analysed by furnaceatomic absorption spectrophotometer, and the
concentration of lead of thesurface soil around the site where
the wild small mammals were trap-ped werealso determined. In
this study, the blood lead of hybrid rats housing in theanimal
room were used as reference base line value. The mean level of
bloodlead of three species (R. novegicus, 19.36±4.93μg/dL,
n=113; S. murinus,16.61±5.00μg/dL,n=18; R. rattus, 17.33±1.98
μg/dL,n=6) trap-ped fromKaohsiung area are significantly higher
than the same species (14.45±5.23μg/dL,n=13; 7.54±1.20 μg/
dL,n=19; 13.75±3.33μg/dL,n=13; respectively)trapped from
Penghu area. The mean level of bone lead of three species (R.
novegicus, 71.70±14.98μg/g,=113; S. murinus, 70.59±31.09 mg/
g, n=18; R.rattus, 69.63±22.26μg/g,=6) trapped from Kaohsiung
area are alsosignificantly higher than the same species
(36.07±28.44 μg/g,n=13; 23.88±6.47μg/g,=19; 48.56±14.22μg/
g,=13; respectively) trapped from Penghu area.The level of blood
lead in hybrid is 2.22±1.20 μg/dL,A good linearrelationship
between blood and bone lead for wild small mamuals can
befoundstatistical significantly. Meanwhile, the level of blood
lead and bone leadis also closely related to the level of soil
lead.The approach to absorb lead by wild small mammals into the
body is verysimilar to that by human .Using wild samll mammals
as biomonitor cancontinuously sample the environment in which it
lives and act as an integrat-ing sampler. From this study, we
find that the wild small mammals can reflectthe exposure of
environmental lead more accurately than human. Therefore,using
wild small mammals to evaluate the improvement of pollution by
envi-ronmental lead might be an ideal bioindicator.
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