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Potential perchlorate exposure from Citrus sp. irrigated with contaminated water

Identifieur interne : 002636 ( Main/Exploration ); précédent : 002635; suivant : 002637

Potential perchlorate exposure from Citrus sp. irrigated with contaminated water

Auteurs : C. A. Sanchez [États-Unis] ; R. I. Krieger [États-Unis] ; N. R. Khandaker [États-Unis] ; L. Valentin-Blasini [États-Unis] ; B. C. Blount [États-Unis]

Source :

Analytica chimica acta [ 0003-2670 ] ; 2006.

RBID : Pascal:06-0375829

Descripteurs français

Pascal (Inist)
- Pollution eau, Fabrication, Diffusion neutron centrale, Equipement collectif, Echantillonnage, Limite détection, Perchlorate, Eau rivière, Eau souterraine, Homme, Fruit.
Wicri :
- topic : Eau souterraine, Homme, Fruit.

English descriptors

KwdEn :
- Detection limit, Facility, Fruit, Ground water, Human, Manufacturing, Perchlorates, River water, Sampling, Small angle neutron scattering, Water pollution.

Abstract

Citrus produced in the southwestern United States is often irrigated with perchlorate-contaminated water. This irrigation water includes Colorado River water which is contaminated with perchlorate from a manufacturing plant previously located near the Las Vegas Wash, and ground water from wells in Riverside and San Bernardino counties of California which are affected by a perchlorate plume associated with an aerospace facility once located near Redlands, California. Studies were conducted to evaluate the uptake and distribution of perchlorate in citrus irrigated with contaminated water, and estimate potential human exposure to perchlorate from the various citrus types including lemon (Citrus limon), grapefruit (Citrus paradise), and orange (Citrus sinensis) produced in the region. Perchlorate concentrations ranged from less than 2-9 μg/L for Colorado River water and from below detection to approximately 18 μg/L for water samples from wells used to irrigate citrus. Destructive sampling of lemon trees produced with Colorado River water show perchlorate concentrations larger in the leaves (1835 μg/kg dry weight (dw)) followed by the fruit (128 μg/kg dw). Mean perchlorate concentrations in roots, trunk, and branches were all less than 30 μg/kg dw. Fruit pulp analyzed in the survey show perchlorate concentrations ranged from below detection limit to 38 μg/kg fresh weight (fw), and were related to the perchlorate concentration of irrigation water. Mean hypothetical exposures (μg/person/day) of children and adults from lemons (0.005 and 0.009), grapefruit (0.03 and 0.24), and oranges (0.51 and 1.20) were estimated. These data show that potential perchlorate exposures from citrus in the southwestern United States are negligible relative to the reference dose recommended by the National Academy of Sciences.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">Citrus produced in the southwestern United States is often irrigated with perchlorate-contaminated water. This irrigation water includes Colorado River water which is contaminated with perchlorate from a manufacturing plant previously located near the Las Vegas Wash, and ground water from wells in Riverside and San Bernardino counties of California which are affected by a perchlorate plume associated with an aerospace facility once located near Redlands, California. Studies were conducted to evaluate the uptake and distribution of perchlorate in citrus irrigated with contaminated water, and estimate potential human exposure to perchlorate from the various citrus types including lemon (Citrus limon), grapefruit (Citrus paradise), and orange (Citrus sinensis) produced in the region. Perchlorate concentrations ranged from less than 2-9 μg/L for Colorado River water and from below detection to approximately 18 μg/L for water samples from wells used to irrigate citrus. Destructive sampling of lemon trees produced with Colorado River water show perchlorate concentrations larger in the leaves (1835 μg/kg dry weight (dw)) followed by the fruit (128 μg/kg dw). Mean perchlorate concentrations in roots, trunk, and branches were all less than 30 μg/kg dw. Fruit pulp analyzed in the survey show perchlorate concentrations ranged from below detection limit to 38 μg/kg fresh weight (fw), and were related to the perchlorate concentration of irrigation water. Mean hypothetical exposures (μg/person/day) of children and adults from lemons (0.005 and 0.009), grapefruit (0.03 and 0.24), and oranges (0.51 and 1.20) were estimated. These data show that potential perchlorate exposures from citrus in the southwestern United States are negligible relative to the reference dose recommended by the National Academy of Sciences.</div>
</front>
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<tree><country name="États-Unis"><region name="Arizona"><name sortKey="Sanchez, C A" sort="Sanchez, C A" uniqKey="Sanchez C" first="C. A." last="Sanchez">C. A. Sanchez</name>
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<name sortKey="Khandaker, N R" sort="Khandaker, N R" uniqKey="Khandaker N" first="N. R." last="Khandaker">N. R. Khandaker</name>
<name sortKey="Krieger, R I" sort="Krieger, R I" uniqKey="Krieger R" first="R. I." last="Krieger">R. I. Krieger</name>
<name sortKey="Valentin Blasini, L" sort="Valentin Blasini, L" uniqKey="Valentin Blasini L" first="L." last="Valentin-Blasini">L. Valentin-Blasini</name>
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Potential perchlorate exposure from Citrus sp. irrigated with contaminated water

Potential perchlorate exposure from Citrus sp. irrigated with contaminated water

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri