Avaliação da concentração de metais pesados e hidrocarbonetos no solo do campo de petróleo Fazenda Belém nos municípios de Aracati e Icapuí no Estado do Ceará
Notice bibliographique
Résumé
This work is a preliminary evaluation for determination of background or base line in heavy metals and hydro-carbons in ground of the Fazenda Belém Oil Field Belém in the city of Aracati, State of the Ceará, for comparisons with samples proceeding from areas where oil spills have occurred. The study has involved collecting of ground samples in the area, in previously selected places, taking in consideration the geology, the type of ground, oil characteristics as density, temperature, viscosity and Basic Sediment and Water (BSW). The values of concentration for some metals in the ground, the permeability, texture, density,porosity, depth of infiltration of the oil in the ground through the simulation of oil spill had been determined in lease, besides evaluating metal texts and Hidrocarbonetos Policíclicos Aromáticos (HPA) before and after the simulation of the spill. The method to simulate the spill consisted of placing, in the sampling points, a stainless steel scaffolding with dimension of 1mX1mX0,20m, leaked, after that it was spilled oil,formed emulsion of oil percentage and another one of water, removed from the closest well next to the studied place. One waited five days so that the infiltration of the oil occurred. After the determined stated period, a cut was done in the ground,inside of the area with oil with the objective of verifying the depth of infiltration and the thickness of the layer. This depth was measured with a milimetric measuring tape. After that all the oil layer was removed, the ground was perforateed with handy tract until the depth of 1 meter and samples were collected for analysis in laboratory.The research done in the field is more representative, it allows to verify in situ what can occur in the ground in case of accident with oil spill, besides making possible the determination of the permeability and the thickness of the infiltrated oil layer, without modifying the natural characteristics of the ground. The results of the analyzes of the ground samples collected before and after the simulation of the oil spill in the three selected places have not presented contamination for Hidrocarbonetos Policíclicos Aromáticos (HPA). All the concentrations of HPAs have presented values below of the limit of detection of the used method in the analysis. The concentrations of metals have not presented significant variation in the ground samples collected before and after the simulation of the spill, being inferior to the values of reference of quality for ground of national works of the Companhia de Tecnologia Sanitária e Ambiental of São Paulo State and Fadigues and International Guidelines (Canada), List Dutch and generic values of selection for ground of the Environment Protection Agency of the United States (EPA). This work will provide support in the decontamination and cleanness of the areas in case of accidents within oil spill occurrence. The previous knowledge of the possible depth of infiltration of the oil in the ground at the temperature up to 50°C, in accordance with the permeability and porosity in the place, will make it possible a better cleanness and recoverying of the area and it will facilitate the calculation of the volume of spilled oil.
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 | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,001 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,001 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,017 | 0,003 |
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; les deux têtes enseignantes s’accordent sur ce qui est montré ici.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».