Biomarker-Determined Nonylphenol Exposure and Associated Risks in Children of Thailand, Indonesia, and Saudi Arabia

Nonylphenol (NP) is an endocrine disruptor and environmental contaminant. Yet, data on individual body burdens and potential health risks in humans, especially among children, are scarce. We analyzed two specific urinary NP metabolites, hydroxy-NP (OH-NP) and oxo-NP. In contrast to parent NP, OH-NP...

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Veröffentlicht in:Environmental science & technology 2022-07, Vol.56 (14), p.10229-10238
Hauptverfasser: Ringbeck, Benedikt, Bury, Daniel, Lee, Inae, Lee, Gowoon, Alakeel, Raid, Alrashed, May, Tosepu, Ramadhan, Jayadipraja, Erwin Azizi, Tantrakarnapa, Kraichat, Kliengchuay, Wissanupong, Brüning, Thomas, Choi, Kyungho, Koch, Holger M.
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container_end_page 10238
container_issue 14
container_start_page 10229
container_title Environmental science & technology
container_volume 56
creator Ringbeck, Benedikt
Bury, Daniel
Lee, Inae
Lee, Gowoon
Alakeel, Raid
Alrashed, May
Tosepu, Ramadhan
Jayadipraja, Erwin Azizi
Tantrakarnapa, Kraichat
Kliengchuay, Wissanupong
Brüning, Thomas
Choi, Kyungho
Koch, Holger M.
description Nonylphenol (NP) is an endocrine disruptor and environmental contaminant. Yet, data on individual body burdens and potential health risks in humans, especially among children, are scarce. We analyzed two specific urinary NP metabolites, hydroxy-NP (OH-NP) and oxo-NP. In contrast to parent NP, OH-NP has a much higher urinary excretion fraction (F ue), and both are insusceptible to external contamination. We investigated spot urine samples from school children of Thailand (n = 104), Indonesia (n = 89), and Saudi Arabia (n = 108) and could quantify OH-NP in 100% of Indonesian and Saudi children (median concentrations: 8.12 and 8.57 μg/L) and in 76% of Thai children (1.07 μg/L). Median oxo-NP concentrations were 0.95, 1.10, and
doi_str_mv 10.1021/acs.est.2c01404
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Yet, data on individual body burdens and potential health risks in humans, especially among children, are scarce. We analyzed two specific urinary NP metabolites, hydroxy-NP (OH-NP) and oxo-NP. In contrast to parent NP, OH-NP has a much higher urinary excretion fraction (F ue), and both are insusceptible to external contamination. We investigated spot urine samples from school children of Thailand (n = 104), Indonesia (n = 89), and Saudi Arabia (n = 108) and could quantify OH-NP in 100% of Indonesian and Saudi children (median concentrations: 8.12 and 8.57 μg/L) and in 76% of Thai children (1.07 μg/L). Median oxo-NP concentrations were 0.95, 1.10, and &lt;0.25 μg/L, respectively, in line with its lower F ue. Median daily NP intakes (DIs), back-calculated from urinary OH-NP concentrations, were significantly higher in Indonesia and Saudi Arabia [0.47 and 0.36 μg/(kg bw·d), respectively] than in Thailand [0.06 μg/(kg bw·d)]. Maximum DIs were close to the preliminary tolerable DI of 5 μg/(kg bw·d) from the Danish Environmental Protection Agency. Dominant sources of exposure or relevant exposure pathways could not be readily identified by questionnaire analyses and also potentially varied by region. 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Median daily NP intakes (DIs), back-calculated from urinary OH-NP concentrations, were significantly higher in Indonesia and Saudi Arabia [0.47 and 0.36 μg/(kg bw·d), respectively] than in Thailand [0.06 μg/(kg bw·d)]. Maximum DIs were close to the preliminary tolerable DI of 5 μg/(kg bw·d) from the Danish Environmental Protection Agency. Dominant sources of exposure or relevant exposure pathways could not be readily identified by questionnaire analyses and also potentially varied by region. 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source ACS Journals: American Chemical Society Web Editions
subjects Biomarkers
Children
Contaminants
Contamination
Ecotoxicology and Public Health
Endocrine disruptors
Environmental protection
Exposure
Health risks
Metabolites
Nonylphenol
Physical growth
Risk assessment
title Biomarker-Determined Nonylphenol Exposure and Associated Risks in Children of Thailand, Indonesia, and Saudi Arabia
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