Arsenic Content in Hair of People Exposed to Natural Arsenic Polluted Groundwater at Zimapán, México

Armienta, M.A.; Rodríguez, Ramiro; Cruz, O.

doi:10.1007/s001289900519

Cited by 70 publications

(30 citation statements)

References 4 publications

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“…In the present study, children had higher arsenic concentrations in both hair and toenails than did the other age groups tested, although numbers were small. This finding is also supported by other studies in which children have been shown to have higher hair arsenic concentrations (Armienta et al 1997;Paschal et al 1989;Takagi et al 1988). Children may simply be exposed to more arsenic because of their play activities and through pica behavior.…”

Section: Discussionsupporting

confidence: 87%

“…In a study by Armienta et al (1997), the mean concentration of arsenic in hair of a highly exposed population (consuming drinking water with arsenic concentrations up to 1,090 µg/L) was 8.55 mg/kg; this is higher than the hair arsenic concentrations observed in the present study, in which drinking water arsenic concentrations were no higher than 73 µg/L.…”

Section: Discussioncontrasting

confidence: 83%

“…Where long-term exposure has been measured using hair as the biomarker of choice, an increase in hair arsenic concentration has been observed associated with increasing arsenic concentrations in drinking water (Armienta et al 1997;Chiou et al 1997;Lin et al 1998;Olgiun et al 1983;Valentine et al 1979). Fewer studies have explored the relationship between exposure to contaminated soil and hair arsenic concentrations.…”

mentioning

confidence: 99%

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Hair and toenail arsenic concentrations of residents living in areas with high environmental arsenic concentrations.

Hinwood

Sim

Jolley

et al. 2003

Environ Health Perspect

125

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Surface soil and groundwater in Australia have been found to contain high concentrations of arsenic. The relative importance of long-term human exposure to these sources has not been established. Several studies have investigated long-term exposure to environmental arsenic concentrations using hair and toenails as the measure of exposure. Few have compared the difference in these measures of environmental sources of exposure. In this study we aimed to investigate risk factors for elevated hair and toenail arsenic concentrations in populations exposed to a range of environmental arsenic concentrations in both drinking water and soil as well as in a control population with low arsenic concentrations in both drinking water and soil. In this study, we recruited 153 participants from areas with elevated arsenic concentrations in drinking water and residential soil, as well as a control population with no anticipated arsenic exposures. The median drinking water arsenic concentrations in the exposed population were 43.8 micro g/L (range, 16.0-73 micro g/L) and median soil arsenic concentrations were 92.0 mg/kg (range, 9.1-9,900 mg/kg). In the control group, the median drinking water arsenic concentration was below the limit of detection, and the median soil arsenic concentration was 3.3 mg/kg. Participants were categorized based on household drinking water and residential soil arsenic concentrations. The geometric mean hair arsenic concentrations were 5.52 mg/kg for the drinking water exposure group and 3.31 mg/kg for the soil exposure group. The geometric mean toenail arsenic concentrations were 21.7 mg/kg for the drinking water exposure group and 32.1 mg/kg for the high-soil exposure group. Toenail arsenic concentrations were more strongly correlated with both drinking water and soil arsenic concentrations; however, there is a strong likelihood of significant external contamination. Measures of residential exposure were better predictors of hair and toenail arsenic concentrations than were local environmental concentrations.

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Section: Discussionsupporting

confidence: 87%

Section: Discussioncontrasting

confidence: 83%

mentioning

confidence: 99%

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Hair and toenail arsenic concentrations of residents living in areas with high environmental arsenic concentrations.

Hinwood

Sim

Jolley

et al. 2003

Environ Health Perspect

125

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“…The Comarca Lagunera represents the major health problem for the country with 400,000 inhabitants exposed to high levels of arsenic and fluoride in drinking water [4] [16] [21]. People in this central arid region of the country depend on groundwater as sources for drinking water [23]. Nevertheless, the health potential risk related to the consumption of contaminated water could be higher since almost 75% of drinking water in the country comes from groundwater sources [21].…”

Section: Introductionmentioning

confidence: 99%

“…This contamination comes from the oxidation of arsenic-bearing minerals that pollute the deeper waters. In addition, there is an anthropogenic contamination from the mining activities in the region [21]- [23]. In Zimapan, water is a scarce resource, and population, estimated at 39,000 [24], totally depends to survive on groundwater.…”

Section: Introductionmentioning

confidence: 99%

Arsenic Removal from Zimapan Contaminated Water Monitored by the Tyndall Effect

Vera-Aguilar¹,

López-Sandoval²,

Godina-Nava³

et al. 2015

JEP

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In Zimapan Valley, Mexico, up to 1.1 mg•L −1 of arsenic concentrations have been detected in deep wells that are used as drinking water supply for almost 39,000 people, which could have been exposed to levels higher than 10 μg•L −1 of arsenic, the maximum level recommended by the World Health Organization. Chronic consumption of water contaminated with arsenic can cause several diseases, including cancer. For it, the implementation of practical and economical methods to remove arsenic from drinking water is crucial to protect the population health. In this work, an electrochemical method to remove arsenic from drinking water is described. The process, monitored by Tyndall effect, utilizes Cu 2+ and Zn 2+ ions from a brass electrode in an electrochemical cell with water as electrolyte. Results show that the EC process reduces the concentration of the arsenic diluted in Zimapan water to a level below the limit of detection of the atomic absorption spectrophotometer employed. Arsenic was removed through the formation of Cu and Zn arsenic compounds. Cu 2+ and Zn 2+ ions form a hydroxide and eventually polycrystalline precipitation of kottigite and cornubite complexes (identified by energy-dispersive X-ray spectroscopy and X-ray diffraction), which are then filtered to eliminate the precipitated arsenic compounds.

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Atomic Spectroscopy for Forensic Applications

Grant

Peters

2000

Encyclopedia of Analytical Chemistry

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Forensic science is a discipline that evolved from the interaction between law enforcement and the scientific community. The typical operating budget of laboratory facilities created to support law enforcement is often far below what is necessary for practical modernization. Hence, routine analyses that require low maintenance and can be readily performed with practical experience were quickly instituted as standard procedures in many such laboratories. As an example, atomic absorption (AA) spectroscopy has served the forensic community for over 40 years and continues to work effectively for such diverse applications as gunshot powder residue analysis and toxicological examinations in suspected heavy metal poisoning cases. These and other traditional forensic applications have also utilized other forms of spectrochemical analysis such as neutron activation. The advantage of the various forms of atomic spectroscopy over these other methods lies in the practical considerations of accessibility and cost as much as in sampling requirements and detection limits. From well established AA methods to the increasing number of forensic applications being developed for laser ablation/inductively coupled plasma mass spectrometry (LA/ICPMS), modern atomic spectroscopy has proven itself to be a compelling and evolving tool in the investigation of forensic evidence.

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Arsenic Content in Hair of People Exposed to Natural Arsenic Polluted Groundwater at Zimapán, México

Cited by 70 publications

References 4 publications

Hair and toenail arsenic concentrations of residents living in areas with high environmental arsenic concentrations.

Hair and toenail arsenic concentrations of residents living in areas with high environmental arsenic concentrations.

Arsenic Removal from Zimapan Contaminated Water Monitored by the Tyndall Effect

Atomic Spectroscopy for Forensic Applications

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