Surfactants from detergents, when inadequately treated in sewage treatment plants, are carried away into estuaries, resulting in the contamination of aquatic environments. It is thus necessary to develop rapid and efficient techniques that are capable of effectively monitoring these pollutants. In this context, for the first time in the literature, this study reports the development and application of a digital image-based (DIB) method for the quantification of the anionic surfactant linear alkylbenzene sulfonate (LAS) in water bodies using a smartphone. The DIB method is a highly effective modern detection method based on methylene blue, which is employed as a modified alternative technique to the spectrophotometric method and commonly used in environmental studies; in the DIB method, the images of interest are obtained using a smartphone and the analyses are carried out using free software Color grab. The results obtained from the application of the DIB method showed that the method possesses high precision and accuracy, with a linear calibration curve in the range of 0.15 to 4.5 mg L, = 0.993, a limit of detection of 6.0 μg L, and recovery rates ranging from 82.7% to 114%. The efficacy of the proposed method was evaluated by comparing its results with those of spectrophotometry (used as a reference method) through the analysis of environmental samples obtained from the Capibaribe River Estuary using methylene blue. No statistically significant differences were observed between the results obtained from the DIB and the spectrophotometric method. The innovative method proposed in this study is fast, economical and environmentally friendly; the technique involves the use of only a few microliters of samples and generates little waste compared to spectrophotometry. In addition, the proposed method is applicable for analyses, allowing real-time monitoring of LAS in different types of aquatic environments.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d4ay00073k | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Transferrin Saturation, Serum Iron, and Ferritin in Heart Failure: Prognostic Significance and Proteomic Associations.
Circ Heart Fail
January 2025
Hospital of the University of Pennsylvania, Philadelphia (S.G., J.D.A., B.P., M.J.D., O.S., O.E., P.Z., T.P.C., J.A.C.).
Background: Iron deficiency (ID) is currently defined as a serum ferritin level <100 or 100 to 299 ng/mL with transferrin saturation (TSAT) <20%. Serum ferritin and TSAT are currently used to define absolute and functional ID. However, individual markers of iron metabolism may be more informative than current arbitrary definitions of ID.
View Article and Find Full Text PDFSocial representations of oncologic surgery for patients with cancer.
Rev Bras Enferm
January 2025
Universidade do Estado do Rio de Janeiro. Rio de Janeiro, Rio de Janeiro, Brazil.
Objectives: to analyze the social representations of patients with cancer regarding oncologic surgery.
Methods: a qualitative study based on Social Representation Theory was conducted with 126 participants between October 2021 and May 2022 in a public hospital in Rio de Janeiro. A characterization questionnaire, free evocations of the inducing term "surgery", and semi-structured interviews with 60 participants were applied.
Full-thickness arthroscopic rotator cuff repair demonstrates low repair failure rates and high return to sport rates in patients aged 30 years and under at 9-year follow-up: A single-center case series.
Shoulder Elbow
January 2025
IU Health Physicians Orthopedics & Sports Medicine, Indianapolis, IN, USA.
Purpose: The purpose of this study is to assess the long-term clinical complications, outcomes, and return to sport (RTS) rates in patients aged 30 or younger with a primary full-thickness arthroscopic rotator cuff repair (ARCR).
Methods: All patients who underwent a primary full-thickness ARCR at age 30 years or younger from 2003 to 2021 with a minimum of a 2-year follow-up were included. Complications, repeat surgeries, and return to sport rates were collected.
[The challenges of new digital technologies on the Moroccan health system : Case of the cardiology departement -B- University Hospital Center Ibn Sina Rabat].
Ann Cardiol Angeiol (Paris)
January 2025
Faculte des Sciences Juridiques, Economiques et Sociales, Département d'Economie et de Gestion, Souissi, Rabat, Maroc.
Introduction: We live in the era of information technology (IT) innovations in the health sector, this has led to the appropriation of new organizational models which are profoundly changing the practice of medicine. Our study aims to determine the challenges of new digital technologies in the Moroccan health system, the case of the cardiology department - B - of the Ibn Sina University Hospital Center.
Materials And Methods: This is a single-center observational descriptive-analytical study carried out at the level of the cardiology department - B- for 6 months, from September 1, 2022.
New Record of Rhipicephalus fulvus (Neumann, 1913) from Goats and Sheep in Northeastern Algeria After more than a Century.
Acta Parasitol
January 2025
Aix Marseille University, IRD, VITROME, Marseille, 13005, France.
Purpose: Tick diversity in Algeria has garnered increasing interest due to its implications for animal health and zoonotic diseases. Recent reports of abnormal ulcerative lesions in goats and sheep in the Cheria region of northeastern Algeria have raised concerns about a potential association with tick infestations. The aim of this study is to hypothesize the potential involvement of ticks in these unusual lesions.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!