Assessing Health Risks from Arsenic Intake by Residents in Cambodia - Environmental Contamination: Health Risks and Ecological Restoration - page 83

Female
01-09
10-19
20-29
30-39
40-49
50-59
60-69

Male

60

01-09
10-19
20-29
30-39
40-49
50-59
60-69

50

40

r s (525) = 0.74, p < 0.0001

70+ 70+

30

20

10

0

0 500

Groundwater arsenic concentration (µg/L)

1000 1500 2000

FIGURE 5.3
Variation. of. arsenic. content. in. scalp. hair. (As h ). with. arsenic. concentration. in. groundwater.
(As w )..(From.Sthiannopkao,.S..et.al.,. Appl. Geochem .,.23,.1086,.2008.)

that.the.arsenic.accumulation.in.residents'.scalp.hair,.which.happens.mainly.
through. a. groundwater. drinking. pathway,. appeared. uninluenced. by. indi-
vidual. gender. and. age.. A. positive. signiicant. correlation. between. arsenic.
content. in. scalp. hair. (As h ). and. ED. (r s . (525).=.0.15,. p.<.0.01). and. a. positive,.
nonsigniicant.correlation.with.gender.(r s .(525).=.0.03,.p.=.0.45.>.0.05).and.age.
group. (r s . (525).=.0.01,. p.=.0.84.>.0.05). (Table. 5.5). demonstrated. that. arsenic.
accumulation. in. scalp. hair. might. be. induced. by. ED. rather. than. individual.
gender.and.age..However,.negative.signiicant.correlations.of.As h .with.body.
weight.(r s .(525).=.−0.10,.p.=.0.027.<.0.05).and.IR.(r s .(525).=.−0.10,.p.=.0.026.<.0.05).
were.obtained..The.negative.association.between.As h .and.IR.might.be.due.to.
high.ingestion.in.low-arsenic-contaminated.areas..Our.survey.questionnaire.
results.showed.that.the.residents.in.the.Kampong.Cham.province.study.area.
drink.groundwater.from.0.5.to.4.0.L/day. (Table.5.2)..In.West.Bengal.(India),.
Samanta. et. al.. (2004). reported. that. the. arsenic. content. in. the. scalp. hair. of.
study. participants. ranged. from. 0.17. to. 14.4.μg/g. (n.=.44,. mean.=.3.43.μg/g,.
and. median.=.2.29.μg/g),. whereas. Mandal. et. al.. (2003). reported. arse-
nic. content. in. scalp. hair. samples. to. be. in. a. range. of. 0.70-16.2.μg/g. (n.=.47,.
mean.=.4.50.μg/g).. In. Bangladesh,. Karim. (2000). presented. that. arsenic. con-
tent.found.in.scalp.hair.samples.ranged.from.1.1.to.19.84.μg/g..Agusa.et.al..
(2006). reported. that. the. arsenic. content. in. scalp. hair. of. Vietnam. residents.
ranged. from. 0.09. to. 2.77.μg/g.. The. ranges. of. arsenic. content. in. scalp. hair.
samples.analyzed.in.Bangladesh.and.West.Bengal.(India).are.comparable.to.
that.of.our.present.study.in.Kandal.province,.whereas.the.case.of.Vietnam.is.
comparable. to. our. present. study. in. Kratie. and. Kampong. Cham. provinces..