Assessing the exposure to formaldehyde of flooring installers during the installation of laminated flooring products
Notice bibliographique
Résumé

 Background: Formaldehyde is a volatile organic compound (VOC) present in resins that bind the wood fibre core of laminated flooring products. Installation of laminate flooring involves performing certain procedures that increase the chance of formaldehyde volatilizing into the atmosphere. Exposure to formaldehyde can lead to acute health effects such as watery eyes, nausea, skin irritation, wheezing, and even death. Formaldehyde is also classified as a probable carcinogen and long-term exposure, even at lower doses, may lead to the development of cancers such as leukemia and sinus cancer. Method: GASTEC formaldehyde 91D passive dositubes were used to quantify the concentrations of formaldehyde present at laminate flooring installation job-sites. The dositubes were worn by two installers who each completed 5 flooring installations over a 15-day period. Between the two installers, there were 3 jobs using Chinese-made laminate, 3 jobs using German-made laminate, and 4 jobs using Canadian-made laminate. A fresh dositube was attached to the belt or collar of each installer at the beginning of the work day and worn while the installer was present at the job-site. In total, 30 samples were collected to which conversion factors were applied to change the units from ppm-hours to an 8-hour time-weighted average TWA. Comparisons were made between Chinese-made, Canadian-made, and German-made laminates and the mean of all 30 readings was compared to the Operational Safety and Health Administration (OSHA) 8-hour TWA standard of 0.75 ppm. Results: A one-sample T-test indicated that the mean concentration of formaldehyde that the test subjects were exposed did not exceed the 0.75 ppm TWA standard (p=0.000). Further analysis via ANOVA revealed that there was no statistical difference when comparing TWAs stemming from installation of Chinese-made, German-made, and Canadian-made laminate flooring (p = 0.200). Conclusion: Based on the results, it was concluded that flooring installers working for the Laminate Warehouse in Maple Ridge, BC, are not at risk of developing acute health effects from installing laminate flooring. However, the installers are still exposed to formaldehyde on a daily basis and chronic exposure could increase the risk of developing cancer. In addition, there was no observed relationship between origin of laminate flooring and levels of formaldehyde exposure.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,003 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,000 | 0,001 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».