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Nasser Eddine N, Noisel N, Dieme D, Asmar MK, Issa ST, Bouchard M. Multi-matrix biomonitoring approach to assess exposure to metals and trace elements in the Lebanese population and associations with drinking water consumption. ENVIRONMENTAL RESEARCH 2022; 214:113982. [PMID: 35952733 DOI: 10.1016/j.envres.2022.113982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/02/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
This study is the first attempt to assess exposure to metals and trace elements in subgroups of the Lebanese population using a multi-matrix biomonitoring approach. Concentrations of 11 metals and trace elements (aluminum (Al), arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), iron (Fe), lead (Pb), manganese (Mn), selenium (Se), uranium (U), zinc (Zn)) were measured in urine, hair and toenails. Biological levels were compared according to age, sex, smoking status, socioeconomic status, geographical area and drinking water source. While most urinary and toenail concentrations of metals and trace elements were not different between males and females, measured concentrations of several elements in hair were higher in females compared to males. Urinary concentrations of some metals (Al, Cu, Se and Zn) were higher in children compared to teenagers and adults. Hair and toenail concentrations of several elements (As, Cd, Pb, Mn, Se in hair and toenails plus Al, Fe in toenails) were also significantly higher in children compared to teenagers and/or adults. Smoking status had no influence on metal and trace element concentrations. Levels of Cd, Pb and Mn were also higher in samples from subgroups with lower economic status (Cd and Pb in the three matrices and Mn in hair and toenails). Very few correlations were identified between sources of drinking water and urine, hair, and toenail concentrations of metals and trace elements. However, a correlation was observed between hair and toenails levels of As, Cd and Pb. Overall, results highlight that a special attention should be given to metal and trace element exposure in this population (including Pb, As, Cd, Mn, and Se). It could be relevant to scale up this kind of investigation with a large human biomonitoring initiative in the Lebanese population in order to generalize results, and assess trends over time.
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Affiliation(s)
- Nessrine Nasser Eddine
- Département de Santé Environnementale et Santé Au Travail, École de Santé Publique, Université de Montréal, 2375 Chemin de La Cote-Sainte-Catherine, Montréal, QC H3T 1A8, Canada
| | - Nolwenn Noisel
- Département de Santé Environnementale et Santé Au Travail, École de Santé Publique, Université de Montréal, 2375 Chemin de La Cote-Sainte-Catherine, Montréal, QC H3T 1A8, Canada; Chaire d'analyse et de gestion des risques toxicologiques, Université de Montréal, 2900, Édouard-Montpetit, Montréal, QC, H3T 1J4, Canada
| | - Denis Dieme
- Département de Santé Environnementale et Santé Au Travail, École de Santé Publique, Université de Montréal, 2375 Chemin de La Cote-Sainte-Catherine, Montréal, QC H3T 1A8, Canada; Centre de Recherche en Santé Publique (CReSP), Université de Montréal, 7101, Avenue Du Parc, Montréal, QC H3N 1X7, Canada
| | - Michèle Kosremelli Asmar
- Institut Supérieur de Santé Publique, Faculté de Médecine, Université Saint-Joseph de Beyrouth, Lebanon
| | - Sahar T Issa
- Department of Environmental Health Sciences, Faculty of Communications, Arts and Sciences, Canadian University Dubai, United Arab Emirates
| | - Michèle Bouchard
- Département de Santé Environnementale et Santé Au Travail, École de Santé Publique, Université de Montréal, 2375 Chemin de La Cote-Sainte-Catherine, Montréal, QC H3T 1A8, Canada; Centre de Recherche en Santé Publique (CReSP), Université de Montréal, 7101, Avenue Du Parc, Montréal, QC H3N 1X7, Canada; Chaire d'analyse et de gestion des risques toxicologiques, Université de Montréal, 2900, Édouard-Montpetit, Montréal, QC, H3T 1J4, Canada.
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Pollock T, Karthikeyan S, Walker M, Werry K, St-Amand A. Trends in environmental chemical concentrations in the Canadian population: Biomonitoring data from the Canadian Health Measures Survey 2007-2017. ENVIRONMENT INTERNATIONAL 2021; 155:106678. [PMID: 34118655 DOI: 10.1016/j.envint.2021.106678] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/18/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Ten years of nationally representative biomonitoring data collected between 2007 and 2017 are available from the Canadian Health Measures Survey (CHMS). These data establish baseline environmental chemical concentrations in the general population. Here we sought to evaluate temporal trends in environmental chemical exposures in the Canadian population by quantifying changes in biomarker concentrations measured in the first five two-year cycles of the CHMS. We identified 39 chemicals that were measured in blood or urine in at least three cycles and had detection rates over 50% in the Canadian population. We calculated geometric mean concentrations for each cycle using the survey weights provided. We then conducted analyses of variance to test for linear trends over all cycles. We also calculated the percent difference in geometric means between the first and most recent cycle measured. Of the 39 chemicals examined, we found statistically significant trends across cycles for 21 chemicals. Trends were decreasing for 19 chemicals from diverse chemical groups, including metals and trace elements, phenols and parabens, organophosphate pesticides, per- and polyfluoroalkyl substances, and plasticizers. Significant reductions in chemical concentrations included di-2-ethylhexyl phthalate (DEHP; 75% decrease), perfluorooctane sulfate (PFOS; 61% decrease), perfluorooctanoic acid (PFOA; 58% decrease), dimethylphosphate (DMP; 40% decrease), lead (33% decrease), and bisphenol A (BPA; 32% decrease). Trends were increasing for two pyrethroid pesticide metabolites, including a 110% increase between 2007 and 2017 for 3-phenoxybenzoic acid (3-PBA). No significant trends were observed for the remaining 18 chemicals that included arsenic, mercury, fluoride, acrylamide, volatile organic compounds, and polycyclic aromatic hydrocarbons. National biomonitoring data indicate that concentrations, and therefore exposures, have decreased for many priority chemicals in the Canadian population. Concentrations for other chemical groups have not changed or have increased, although average concentrations remain below thresholds of concern derived from human exposure guidance values. Continued collection of national biomonitoring data is necessary to monitor trends in exposures over time.
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Affiliation(s)
- Tyler Pollock
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada.
| | | | - Mike Walker
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Kate Werry
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Annie St-Amand
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
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