Rapid Detection of Fluoride in Potable Water
Notice bibliographique
Résumé
The development of rapid, efficient and inexpensive methods for the detection of fluoride in potable water, has been gaining significant attention in the recent years, particularly in the developing countries. Fluoride, which is known to have antimicrobial properties, plays a significant role in human health. Fluoride helps in treating Osteoporosis and also has many beneficial effects in the maintenance of dental health. Fluoride is an additive in most of the toothpastes that are commercially available. Fluoride is also added to drinking water in limited concentrations owing to its properties in preventing and controlling dental Caries. The recommended level of fluoride in drinking water is 1.5 mg/L as directed by the World Health Organization (WHO). However, an increase in fluoride concentration above this level leads to dental and skeletal fluorosis. Excess exposure to fluoride is also known to induce many endocrine effects such as decreased thyroid function and Type II diabetes. Hence, fluoride levels in drinking water have to be regularly monitored and precautions need to be taken to control the increased levels of fluoride in drinking water. In view of the need for a simple cost effective method for the detection of fluoride ion, we considered the unique chemistry of fluoride ion towards the silyl ethers. The highly electronegative fluoride ion has been widely used to remove the silyl protective group from silyl ethers. In order to use this unique character of the reaction, we have synthesized a new water soluble colorless chemical sensor 7-O-tert.Butyldiphenylsilyl-4-methylcoumarin (SiC), which upon interaction with fluoride ions in water, releases fluorescent molecules that impart blue fluorescence to the solution. The blue fluorescence can be observed using simple hand held ultraviolet (UV) lamps. For quantification, the resultant fluorescence can be measured using simple and portable battery operated optical readers. SiC is extremely sensitive to fluoride and our results indicate that fluoride concentrations as low as 1 mmol/L can be accurately detected within a few seconds. This method is quite simple and rapid compared to the conventional methodologies. This method doesn’t warrant any special training and can be used by any unskilled person on site at the source of water and can also be easily incorporated into any multiplexed detection system. Figure 1
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
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 | 0,001 | 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 | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 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 ».