Journal of environmental exposure assessment最新文献_第6页

Questioning the appropriateness of sieving for processing indoor settled dust samples 质疑筛分法处理室内尘埃样品的适宜性

Journal of environmental exposure assessment Pub Date : 2022-01-01 DOI: 10.20517/jeea.2022.12

L. Melymuk, S. Jílková, M. Kolář, Petra Svobodova, B. Vrana, K. Hilscherová

{"title":"Questioning the appropriateness of sieving for processing indoor settled dust samples","authors":"L. Melymuk, S. Jílková, M. Kolář, Petra Svobodova, B. Vrana, K. Hilscherová","doi":"10.20517/jeea.2022.12","DOIUrl":"https://doi.org/10.20517/jeea.2022.12","url":null,"abstract":"Dust is a widely-used matrix for estimating human exposure to chemicals or as a screening tool for the identification of indoor chemicals of concern. As dust sampling became more common in exposure assessment, techniques used in processing soil have been adapted to dust samples, and separation of dust particles by sieving is common practice. However, there are no defined pore sizes, which results in inconsistent or difficult data interpretation and exposure estimates. Moreover, dust consists of more particle types than soil, particularly fibers, which behave differently during the sieving process. In this study, composite samples from seven microenvironments (homes, apartments, kindergartens, schools, public spaces, offices, and cars) were used to investigate the impact of the separation of dust by sieving on the observed chemical distributions. Dust was sieved to four particle size fractions (1-2 mm, 0.5-1 mm, 0.25-0.5 mm, and < 0.25 mm) and each fraction was analyzed for organic carbon content and polycyclic aromatic hydrocarbons (PAHs), and images of dust samples were taken by optical microscope. We identified irregular distributions across size fractions for carbon and PAHs as well as for fibrous particles. Based on the combination of chemical analyses and microscopy, we recommend careful consideration of pre-processing of dust samples to limit bias in dust exposure assessments, and sieving should be used only when necessary.","PeriodicalId":73738,"journal":{"name":"Journal of environmental exposure assessment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67657607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

https://www.oaepublish.com/jeea/article/view/5143 https://www.oaepublish.com/jeea/article/view/5143

Journal of environmental exposure assessment Pub Date : 2022-01-01 DOI: 10.20517/jeea.2022.13

Abani Okoh, G. Tesi, M. Dauda, H. Aliyu

引用次数: 1

Organ-specific accumulation of toxic elements in Hilsa shad (Tenualosa ilisha) from Bangladesh and human health risk assessment 孟加拉沙鱼(Tenualosa ilisha)中有毒元素的器官特异性积累与人类健康风险评估

Journal of environmental exposure assessment Pub Date : 2022-01-01 DOI: 10.20517/jeea.2021.05

Mohammad Raknuzzaman, Md. Habibullah-Al-Mamun

{"title":"Organ-specific accumulation of toxic elements in Hilsa shad (Tenualosa ilisha) from Bangladesh and human health risk assessment","authors":"Mohammad Raknuzzaman, Md. Habibullah-Al-Mamun","doi":"10.20517/jeea.2021.05","DOIUrl":"https://doi.org/10.20517/jeea.2021.05","url":null,"abstract":"Purpose: We aimed to determine the amount of some toxic elements in three organs of Hilsa shad, focusing on the possible exposure to human health through Hilsa consumption. This study was designed to determine the concentration of seven toxic trace elements (As, Cd, Cr, Cu, Ni, Pb, and Zn) in three distinct organs (n = 21) (muscle, liver, and gills) of Hilsa shad (Tenualosa ilisha) fish collected from the Bangladeshi coastal area. The samples were digested following a microwave digestion. Inductively coupled plasma mass spectrometer was used as analytical instrument. Estimated daily intakes (EDI) and target cancer risk (TR) were used to evaluate carcinogenic and non-carcinogenic risk. Results: The mean concentrations (mg/kg-wet weight) of toxic elements in different organs of T. ilisha were determined as follows: in muscle, As (4.05), Cd (0.09), Cr (0.12), Cu (0.77), Ni (0.26), Pb (0.20), and Zn (10.64); in liver, As (2.83), Cd (0.84), Cr (0.18), Cu (6.17), Ni (0.55), Pb (0.23), and Zn (30.16) and in gills, As (3.45), Cd (0.05), Cr (0.08), Cu (1.06), Ni (0.51), Pb (0.78), and Zn (35.21). The liver showed higher concentrations of most elements than that of muscle except for As. Concentration of As, Cd, and Pb in the fish were found above the food safety guidelines, while other trace element concentrations were below the permissible range for human consumption. According to EDI and TR values, there were carcinogenic and non-carcinogenic risks from exposure to total As concentration from Hilsa fish consumption. Conclusion: This study suggests that the toxic trace elements contamination levels in Hilsa fish from Bangladesh’s coastal area need to be monitored on a systematic and regular basis to ensure the safety of this food item for human consumption.","PeriodicalId":73738,"journal":{"name":"Journal of environmental exposure assessment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67657780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Microplastics in the atmosphere: a review 大气中的微塑料:综述

Journal of environmental exposure assessment Pub Date : 2022-01-01 DOI: 10.20517/jeea.2021.07

N. Habibi, S. Uddin, S. Fowler, M. Behbehani

引用次数: 27

Welcome to the Journal of Environmental Exposure Assessment 欢迎来到《环境暴露评估》杂志

Journal of environmental exposure assessment Pub Date : 2021-07-27 DOI: 10.20517/jeea.2021.01

S. Harrad, Daniel C W Tsang, S. Boontanon, Xiaojun Luo, O. A. Abafe, Habibeh Bagheri, E. Eljarrat, Thanh Wang, B. Martincigh, Habibullah Al-Mamun, Hong-jun Mao, A. Mahmood, Giulia Poma, C. Rauert, L. Melymuk

引用次数: 0

Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and polychlorinated biphenyls (PCBs) in human milk from Ireland: temporal trends and implications for nursing infant exposure 爱尔兰母乳中多氯二苯并对二恶英(pcdd)、多氯二苯并呋喃(pcdf)和多氯联苯(PCBs)的浓度:时间趋势和对哺乳婴儿暴露的影响

Journal of environmental exposure assessment Pub Date : 2021-01-01 DOI: 10.20517/jeea.2021.02

Margarete Houlihan, Nina Wemken, Myra Keogh, Colman O’Riordain, Conor Noone, Julie Tierney, Claire Cellarius, Kathy Cleere, J. Morrison, S. Daly, S. Harrad, C. Tlustos, M. Coggins

{"title":"Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and polychlorinated biphenyls (PCBs) in human milk from Ireland: temporal trends and implications for nursing infant exposure","authors":"Margarete Houlihan, Nina Wemken, Myra Keogh, Colman O’Riordain, Conor Noone, Julie Tierney, Claire Cellarius, Kathy Cleere, J. Morrison, S. Daly, S. Harrad, C. Tlustos, M. Coggins","doi":"10.20517/jeea.2021.02","DOIUrl":"https://doi.org/10.20517/jeea.2021.02","url":null,"abstract":"and Ireland: and Abstract Aim: The elucidation of temporal trends in human exposure to polychlorinated biphenyls (PCBs) and 17 polychlorinated dibenzo-p-dioxins and furans (PCDD/Fs) since the previous Irish human milk surveys and to evaluate the impacts of legislative bans and restrictions on human exposure to these compounds. Methods: Concentrations of PCBs and 17 PCDD/Fs were measured in 16 pools of human milk collected from 92 Irish primiparas participating in the Irish EPA-funded ELEVATE project between October 2016 and April 2018, using Gas-Chromatography coupled with Mass spectrometry. Results: The geometric mean upper bound concentration of 16 pooled human milk samples [PCDD/Fs + dioxin-like (dl)-PCB TEQ; 4.5 ng kg -1 lipid weight] are on the lower end of those reported internationally. WHO-TEQ PCDD/Fs + dl-PCB are significantly lower ( P < 0.005) compared to those reported in the previous Irish human milk studies in 2010 and 2002. Conclusion: Detected concentrations in this study are comparable to those reported for less industrialised countries in the last WHO/UNEP global surveys for PCDD/Fs. This downward temporal trend likely reflects the impact of regulatory bans and restrictions on the emissions of dioxins and PCBs. While mean upper bound WHO PCDD/F PCB TEQ concentrations are lower than those estimated by EFSA to be associated with adverse health effects in children age 9, maximum upper bound concentrations do exceed EFSA reference concentrations. While the positive health benefits of breastfeeding to both mother and child significantly outweigh potential adverse health effects at reported concentrations, continued action to reduce human body burdens of dioxins and PCBs is required.","PeriodicalId":73738,"journal":{"name":"Journal of environmental exposure assessment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67657748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Determination and dietary risk assessment of neonicotinoid and insect growth regulators in honey 蜂蜜中新烟碱类和昆虫生长调节剂的测定及膳食风险评估

Journal of environmental exposure assessment Pub Date : 2021-01-01 DOI: 10.20517/jeea.2021.04

O. A. Abafe, T. Chokwe

{"title":"Determination and dietary risk assessment of neonicotinoid and insect growth regulators in honey","authors":"O. A. Abafe, T. Chokwe","doi":"10.20517/jeea.2021.04","DOIUrl":"https://doi.org/10.20517/jeea.2021.04","url":null,"abstract":"Aim: The aim of this study was to determine the presence, concentrations, dietary intake, and risk of residues of neonicotinoids (NEO) and insect growth regulators (IGR) in commercially available honey in South Africa. Methods: Sample preparation for honey was based on the “dilute and shoot” principle, followed by analysis using an internally validated ultra-high-performance liquid chromatographic coupled to tandem mass spectrometric method. Estimated daily intake and acute and chronic hazard quotients were determined to measure human exposure and health risk to NEO and IGR as well as the risk posed to honeybee. Results: NEO and IGR were detected in 50% and 21% of the 115 honey samples, respectively. The average concentration ranged 0.062-6.50 µgkg-1 and 0.479-1.644 µgkg-1 for NEO and IGR, respectively. While acetamiprid was the most detected (24.35%) NEO, imidacloprid presented the highest concentration (16.945 µg kg-1) in a sample. IGR co-occurred at variable concentrations with NEO in honey samples. The estimated daily intakes (EDI) of NEO and IGR ranged from 9.35 × 10-7 to 4.93 × 10-6 mg kg-1 bwd-1. The chronic hazard quotient (HQc) and acute hazard quotient (HQa) for NEO and IGR were considerably < 1, indicating negligible risk to human health and honeybee population. Conclusion: A UHPLC-MS/MS method was validated for the simultaneous determination of neonicotinoids and insect growth regulators in honey. Overall, the result of the present study confirms the widespread occurrence of NEO and IGR in honey consumed in South Africa. The EDIs, HQc, and HQa indicate that exposure to all target NEO and IGR via honey consumption constitutes negligible human health risk; however, the consequences of multiple routes of exposure to NEO and IGR cannot be overemphasized.","PeriodicalId":73738,"journal":{"name":"Journal of environmental exposure assessment","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67657807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4