Environmental Engineering Reference
In-Depth Information
Female
01-09
10-19
20-29
30-39
40-49
50-59
60-69
Male
01-09
10-19
20-29
30-39
40-49
50-59
60-69
50
40
70+
70+
30
r s (525) = 0.75, p < 0.0001
20
10
0
10 × 10 -3
2
6
Average daily dose (mgAs/Kg/day)
4
8
0
FIGURE 5.4
Variation.of.arsenic.content.in.scalp.hair.(As h ).with.ADD.(average.daily.dose).of.arsenic..(From.
Sthiannopkao,.S..et.al.,. Appl. Geochem .,.23,.1086,.2008.)
Mazumder.et.al..(2009).found.that.approximately.72%.of.Preak.Russey.resi-
dents.showed.evidences.of.arsenical.skin.lesion.(pigmentation.and/or.kera-
tosis).and.the.largest.number.of.cases.belonged.to.those.in.the.age.group.of.
31-45.years..Concurrently,.37%.of.children.aged.less.than.16.years.had.skin.
lesions. resulting. from. arsenicosis.. The. youngest. child. having. the. evidence.
of. Keratosis. and. pigmentation. was. 8. years. old,. although. features. such. as.
redness.and.mild.thickening.of.the.palms.were.found.only.in.children.aged.
between.4.and.5.years.(Mazumder.et.al..2009)..This.inding.corresponds.to.
our.present.study.results.that.arsenic.contents.in.scalp.hair.were.found.high-
est.in.children.in.the.age.range.of.1-9.followed.by.adults.in.the.age.group.of.
30-39.years.
Although.there.was.a.statistically.signiicant.positive.correlation.between.
As h .and.ADD,.the.scatter. plot.of.Figure.5.4.indicates.that.the.arsenic.accu-
mulation.rate.varies.among.individuals..Such.variations—for.example,.“low.
ADD,.but.high.arsenic.content.in.scalp.hair”.or.“high.ADD,.but.low.arsenic.
content. in. scalp. hair”—might. be. due. to. family. socioeconomic. status,. mal-
nutrition.level,.individual.health.status,.hygiene,.and/or.habits.in.drinking.
water. maintenance. and. storage. before. consumption.. Sampson. et. al.. (2008).
reported.that.higher.family.socioeconomic.status.and.better.nutrition.could.
reduce. physical. susceptibility. and. delay. the. manifestation. of. arsenicosis.
symptoms..Moreover,.healthier.residents.with.suficient.macro-.and.micro-
nutrients.might.more.eficiently.remove.arsenic.from.their.bodies.(Sampson.
et. al.. 2008).. However,. some. residents. might. ingest. an. excessive. amount. of.
arsenic,.not.only.through.groundwater.drinking.pathway.but.also.through.
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