{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,26]],"date-time":"2026-07-26T05:55:14Z","timestamp":1785045314888,"version":"3.55.0"},"reference-count":24,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2023,4,11]],"date-time":"2023-04-11T00:00:00Z","timestamp":1681171200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"South African National Research Foundation (NRF)","award":["TTK170511230614"],"award-info":[{"award-number":["TTK170511230614"]}]},{"name":"South African Department of Higher Education and Training New Generation of Academics Programme (nGAP)","award":["TTK170511230614"],"award-info":[{"award-number":["TTK170511230614"]}]},{"name":"WITS Chancellor\u2019s Female Academic Leaders Fellowship","award":["TTK170511230614"],"award-info":[{"award-number":["TTK170511230614"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>Participatory research, including self-assessment of exposure (SAE), can engage study participants and reduce costs. The objective of this study was to investigate the feasibility and reliability of a SAE regime among nail technicians. The study was nested in a larger study, which included exposure assessment supervised by experts, i.e., controlled assessment of exposure (CAE). In the SAE approach, ten formal and ten informal nail technicians were verbally instructed to use a passive sampler and complete an activity sheet. Each participant conducted measurements on three consecutive days, whereafter the expert collected the passive samplers. Sixty samples were, thus, analyzed for twenty-one volatile organic compounds (VOCs). The reported concentrations of 11 VOCs were converted into total VOC (TVOC) concentrations, adjusted for their respective emission rates (adj TVOC) to allow comparison within and between nail technician categories (formal vs informal), as well as assessment regimes (SAE versus CAE), using the data from the main study. In total, 57 SAE and 58 CAE results were compared, using a linear mixed-effects model. There were variations in individual VOC concentrations, especially for the informal sector participants. The major contributors to the adj TVOC concentrations were acetone and 2-propanol for the formal category, whereas ethyl- and methyl methacrylate contributed most to the informal nail technicians\u2019 total exposures. No significant differences in adj TVOC-concentrations were observed between the assessment regimes, but significantly higher exposures were recorded in the formal technicians. The results show that the SAE approach is feasible in the informal service sector and can extend an exposure dataset to enable reliable estimates for scenarios with substantial exposure variations.<\/jats:p>","DOI":"10.3390\/ijerph20085459","type":"journal-article","created":{"date-parts":[[2023,4,11]],"date-time":"2023-04-11T02:02:33Z","timestamp":1681178553000},"page":"5459","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Quantitative Self-Assessment of Exposure to Solvents among Formal and Informal Nail Technicians in Johannesburg, South Africa"],"prefix":"10.3390","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1750-3715","authenticated-orcid":false,"given":"Derk","family":"Brouwer","sequence":"first","affiliation":[{"name":"School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9586-9320","authenticated-orcid":false,"given":"Goitsemang","family":"Keretetse","sequence":"additional","affiliation":[{"name":"School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7815-3718","authenticated-orcid":false,"given":"Gill","family":"Nelson","sequence":"additional","affiliation":[{"name":"School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,11]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"54","DOI":"10.1016\/j.cotox.2021.08.003","article-title":"Strength in Numbers: How Citizen Science Can Upscale Assessment of Human Exposure to Plastic Pollution","volume":"27","author":"Oturai","year":"2021","journal-title":"Curr. Opin. Toxicol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1080\/15459624.2019.1566733","article-title":"The Power of the Crowd: Prospects and Pitfalls for Citizen Science in Occupational Health","volume":"16","author":"Moore","year":"2019","journal-title":"J. Occup. Environ. Hyg."},{"key":"ref_3","first-page":"858","article-title":"Cost-Efficient Design of Occupational Exposure Assessment Strategies\u2014A Review","volume":"54","author":"Rezagholi","year":"2010","journal-title":"Ann. Occup. Hyg."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"553","DOI":"10.1080\/15298669191365199","article-title":"Environmental versus Analytical Variability in Exposure Measurements","volume":"52","author":"Nicas","year":"1991","journal-title":"Am. Ind. Hyg. Assoc. J."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"64","DOI":"10.1202\/0002-8894(2000)061<0064:EOTCOV>2.0.CO;2","article-title":"Evaluation of the Cost-Effectiveness of Various Passive Monitors and Active Monitors for Industrial Hygiene Sampling","volume":"61","author":"Nothstein","year":"2000","journal-title":"Am. Ind. Hyg. Assoc. J."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"195","DOI":"10.1080\/104732200301692","article-title":"Self-Assessment of Exposure\u2014A Pilot Study of Assessment of Exposure to Benzene in Tank Truck Drivers","volume":"15","author":"Liljelind","year":"2000","journal-title":"Appl. Occup. Environ. Hyg."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"311","DOI":"10.5271\/sjweh.619","article-title":"Comparison of Self-Assessment and Expert Assessment of Occupational Exposure to Chemicals","volume":"27","author":"Liljelind","year":"2001","journal-title":"Scand. J. Work Environ. Health"},{"key":"ref_8","first-page":"529","article-title":"Should Styrene Be Sampled on the Left or Right Shoulder?\u2014An Important Question in Employee Self-Assessment","volume":"49","author":"Eriksson","year":"2005","journal-title":"Ann. Occup. Hyg."},{"key":"ref_9","first-page":"45","article-title":"Quantitative Self-Assessment of Exposure to Solvents among Shoe Repair Men","volume":"51","author":"Hertsenberg","year":"2007","journal-title":"Ann. Occup. Hyg."},{"key":"ref_10","first-page":"663","article-title":"Workers\u2019 Interpretation of Self-Assessment of Exposure","volume":"52","author":"Liljelind","year":"2008","journal-title":"Ann. Occup. Hyg."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"539","DOI":"10.1093\/annweh\/wxx024","article-title":"Diesel Exhaust Exposure Assessment among Tunnel Construction Workers\u2014Correlations between Nitrogen Dioxide, Respirable Elemental Carbon, and Particle Number","volume":"61","author":"Hedmer","year":"2017","journal-title":"Ann. Work Expo. Health"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"107339","DOI":"10.1016\/j.envint.2022.107339","article-title":"Silicone Wristbands as Personal Passive Sampling Devices: Current Knowledge, Recommendations for Use, and Future Directions","volume":"169","author":"Samon","year":"2022","journal-title":"Environ. Int."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"14630","DOI":"10.1021\/acs.est.9b02474","article-title":"Exposure of Nail Salon Workers to Phthalates, Di(2-Ethylhexyl) Terephthalate, and Organophosphate Esters: A Pilot Study","volume":"53","author":"Craig","year":"2019","journal-title":"Environ. Sci. Technol."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Keretetse, G., Nelson, G., and Brouwer, D. (2023). Exposure of Formal and Informal Nail Technicians to Organic Solvents Found in Nail Products. Front. Pub. Health, accepted.","DOI":"10.3389\/fpubh.2023.1147204"},{"key":"ref_15","unstructured":"(2022, November 20). Expostats. Available online: https:\/\/www.expostats.ca."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"267","DOI":"10.1093\/annweh\/wxy100","article-title":"Expostats: A Bayesian Toolkit to Aid the Interpretation of Occupational Exposure Measurements","volume":"63","author":"Joseph","year":"2019","journal-title":"Ann. Work Expo. Health"},{"key":"ref_17","unstructured":"(2022, December 04). IHMOD2. Available online: https:\/\/www.aiha.org\/public-resources\/consumer-resources\/apps-and-tools-resource-center\/aiha-risk-assessment-tools\/ihmod-tool-support-file."},{"key":"ref_18","unstructured":"(2022, October 20). JASP. Available online: https:\/\/jasp-stats.org\/."},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Noguchi, M., Mizukoshi, A., Yanagisawa, Y., and Yamasaki, A. (2016). Measurements of Volatile Organic Compounds in a Newly Built Daycare Center. Int. J. Environ. Res. Public Health, 13.","DOI":"10.3390\/ijerph13070736"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Wallenius, K., Hovi, H., Remes, J., Mahiout, S., and Liukkonen, T. (2022). Volatile Organic Compounds in Finnish Office Environments in 2010\u20132019 and Their Relevance to Adverse Health Effects. Int. J. Environ. Res. Public Health, 19.","DOI":"10.3390\/ijerph19074411"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1186\/s40814-016-0047-1","article-title":"Formative Research to Reduce Mine Worker Respirable Silica Dust Exposure: A Feasibility Study to Integrate Technology into Behavioral Interventions","volume":"2","author":"Haas","year":"2016","journal-title":"Pilot Feasibility Stud."},{"key":"ref_22","first-page":"104","article-title":"Application of Low-Cost Monitoring and Sampling Devices in Occupational Hygiene Measurement Strategies for Hazardous Chemicals","volume":"26","author":"Brouwer","year":"2020","journal-title":"Occup. Health S. Afr."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1007\/s40572-021-00306-8","article-title":"Use of Exposomic Methods Incorporating Sensors in Environmental Epidemiology","volume":"8","author":"Doherty","year":"2021","journal-title":"Curr. Environ. Health Rep."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"962","DOI":"10.1038\/s41370-019-0198-2","article-title":"Dynamic Classification of Personal Microenvironments Using a Suite of Wearable, Low-Cost Sensors","volume":"30","author":"Quinn","year":"2020","journal-title":"J. Expo. Sci. Environ. Epidemiol."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/20\/8\/5459\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T19:13:39Z","timestamp":1760123619000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/20\/8\/5459"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4,11]]},"references-count":24,"journal-issue":{"issue":"8","published-online":{"date-parts":[[2023,4]]}},"alternative-id":["ijerph20085459"],"URL":"https:\/\/doi.org\/10.3390\/ijerph20085459","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,4,11]]}}}