Differential UV spectroscopy, defined as the difference in UV absorbance spectra before and after chlorination, has shown great potential to predict disinfection by-product (DBP) concentrations at laboratory scale. However, so far, no results have been reported on the full scale application of differential UV spectroscopy in drinking water treatment facilities. The objectives of this study are to determine if relationships can be developed between differential UV absorbance and DBP concentrations, for both regulated and unregulated DBPs, in a full-scale facility and to determine if these relationships vary throughout the year with variations in raw water quality and treatment conditions. The results show that linear and power relationships between differential UV absorbance and DBP concentrations can be developed (0.62 ≤ R ≤ 0.99), although differences between relationships obtained in lab- and full-scale conditions need further investigation. Finally, the relationships obtained are different from one sampling campaign to another, which raises the question of whether it is possible to determine relationships that are stable enough to be used as adequate feedback on DBP concentrations.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.watres.2017.12.031 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Subchronic Exposure to Regulated Trihalomethanes and Haloacetic Acids: Do We Need to Refine Our Exposure Assessment? A Full-Scale Case Study in a Canadian Municipality.
Environ Sci Technol
January 2025
University of Victoria, Civil Engineering, ECS Building, Victoria, British Columbia V8W 2Y2, Canada.
Article Synopsis
- Regulated disinfection byproducts in drinking water, like trihalomethanes and haloacetic acids, show higher levels in summer and vary based on water sources and treatment practices.
- Monitoring usually relies on yearly averages, meaning short-term spikes in these chemicals may be overlooked, raising concerns about potential health impacts on vulnerable groups like infants and toddlers.
- This study examines how exposure levels differ across a drinking water network, finding that while overall exposure to chloroform was below toxic levels, the data can help public health officials identify high-risk areas and better manage water safety.
Sympathetic nervous system inhibition enhances cardiac metabolism and improves hemodynamics and glucose-insulin dynamics in obese and lean rat models.
Sci Rep
January 2025
Department of Pharmacology, "Grigore T. Popa" University of Medicine and Pharmacy, 16 University St., Iași, Romania.
This study aimed to investigate the effects of chronic sympathoinhibition on glucose uptake by the myocardium and by the skeletal muscle in an animal model of obesity associated with leptin signaling deficiency. 6 obese Zucker rats (OZR) and 6 control Lean Zucker rats (LZR) were studied during basal conditions, chronic clonidine administration (30 days, 300 µg/kg), and washout recovery period. Glucose uptake in the myocardium and in the skeletal muscle was measured using positron emission tomography (PET) and 2-[18F] fluoro-2-deoxy-D-glucose ([18F]FDG).
View Article and Find Full Text PDFThe correlation between hemoglobin concentration and blood pressure during pregnancy in different trimesters.
BMC Pregnancy Childbirth
December 2024
Department of Public Health, Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China.
Background: Maternal hemoglobin (Hb) is related to nutritional status, and it widely fluctuates during pregnancy. However, the relationship between Hb and blood pressure (BP) during pregnancy is unclear. This study aimed to estimate the associations between maternal Hb in various trimesters and its changes with BP during pregnancy.
View Article and Find Full Text PDFElevated concentrations of cardiac troponin T are associated with thoracic aortic calcification in non-dialysis chronic kidney disease patients of stage G3 to G5.
Ren Fail
December 2025
Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
Background: Vascular calcification (VC), especially coronary artery calcification (CAC), serves as a robust predictor of cardiovascular mortality in chronic kidney disease (CKD) patients. Recent studies have revealed that the presence of extra-coronary calcifications (ECCs) contributes to cardiovascular disease (CVD). Elevated myocardial injury markers predict mortality risk in CKD patients and are associated with CVD.
View Article and Find Full Text PDFScreening and diversity analysis of Dibutyl phthalate degrading bacteria in agricultural soil in Chengdu, China.
PLoS One
December 2024
School of Environmental Science and Engineering, Southwest Jiaotong University, Chengdu, China.
Dibutyl phthalate (DBP) with teratogenicity, carcinogenesis, and mutagenesis, is a ubiquitous endocrine disruptor in the environment. The widespread usage of plastic mulch has resulted in a severe DBP pollution problem in agricultural soil. One of the most vital ways to mitigate the DBP pollution problem is to use DBP degrading bacteria to reduce the concentration of DBP in agricultural soil.
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!