organics analysis Articles
-
Microplastic in water - Occurrence, risks and removal
1. Microplastics - what's the problem? Social and industrial progresses continuously improve our everyday life by yielding new materials, which fit our needs and stand out by their specially designed material properties. Hardly any other material has affected world's mass consumption and industry as plastics. These polymers feature plastic or elastic properties, thermal and biological stability ...
-
Degradation of humic acid from water by advanced electrochemical oxidation method
In this study, the electrooxidation treatment method using boron-doped diamond (BDD) electrodes was investigated for the degradation of humic acid (HA) following absorbance at 254 nm (A254), color (A436) and total organic carbon (TOC) analysis. Also, a surrogate SUVA254 parameter was used to evaluate the aromatic carbon content. Prior to the application of the electrooxidation for HA degradation ...
-
Characteristics and sources analysis of riverine chromophoric dissolved organic matter in Liaohe River, China
Chromophoric dissolved organic matter (CDOM) in riverine systems can be affected by environmental conditions and land-use, and thus could provide important information regarding human activities in surrounding landscapes. The optical properties of water samples collected at 42 locations across the Liaohe River (LHR, China) watershed were examined using UV-Vis and fluorescence spectroscopy to ...
-
On line analysis of organic in water case study
Introduction On line chemical analysis has been developed significantly thanks to digital electronics' use of microprocessors together with the application of sophisticated and accurate analytical techniques. The result of this combination is readily available technology which allows for on line performance of almost any analytical determination for quality control which is normally made in a ...
-
Case Study: WTP in Puerto Rico saves thousands with UV254 Monitoring Package - Case Study
Summary Dealing with fluctuating water sources is not an easy task for plant operators. Seasonal variation, heavy rain fall or accidental contamination events change the raw water quality, requiring immediate attention. This is a familiar scenario for Facility Manager, Nancy Ma. Cáceres Acosta at the Los Filtros Water Treatment Plant in Puerto Rico. She has been producing highquality water ...
-
Hydrologic signature analysis of select organic hydric soil indicators in northeastern Florida
The magnitude, duration, and return intervals of surface water flooding and dewatering of the landward extent of the hydric soil indicators muck (LM), histic epipedon (LHE), and Histosol (LH) were quantitatively defined, providing a better understanding of the hydrologic conditions maintaining these hydric soil indicators. Land surface elevations were determined for the LM, LHE, and LH at 16 ...
-
Stability of pharmaceuticals and other polar organic compounds stored on polar organic chemical integrative samplers and solid‐phase extraction cartridges
The stability of 24 chemicals, including pharmaceuticals and personal care products, and some agrochemicals on extraction media was evaluated by preloading them onto Oasis hydrophilic lipophilic balanced solid‐phase extraction (SPE) cartridges and polar organic chemical integrative samplers (POCIS) followed by storage at −20°C over time. After 20 months, the average loss was 11% on POCIS, with ...
-
Disinfection by-products in drinking water – a case study on Calgary, Alberta, Canada
Disinfection by-products (DBPs) have been monitored in Calgary's drinking water for approximately 15 years. The variability of the DBPs has typically exhibited similar patterns over the period of monitoring. Due to the nature of the surface waters supplying the water treatment plants, the level of DBPs was largely influenced by surface runoff events where the level of natural organic matter (NOM) ...
-
Analysis of Epichlorohydrin in Drinking Water Using the Lumin P & T Concentrator
Abstract Epichlorohydrin (ECH) is a versatile starting material in the production of drugs and polymers and is also used as an insect fumigant and solvent for organic synthesis reactions. ECH-based polymer pipes are widely employed in the production of drinking water. Due to its extreme reactivity and toxicity, many nations have begun imposing limits on the amount of ECH allowable in drinking ...
-
Study: Organic Substances in Surface Waters Complex, Potentially Harmful
Compounds, some biologically active, were found even in remote areas A new study shows the pollutant mixtures found in surface-water samples collected throughout the U.S. are more chemically complex than expected. The compounds not only have the potential to harm aquatic species, but also may have adverse implications for human health The study was based on prior similar studies conducted ...
-
European wastewater analysis shows drug-use patterns
Residents of London and Antwerp are using more cocaine than residents of any other major European cities based on a new examination of wastewater. Londoners are using cocaine the most during the work week — which the study defines as Tuesday, Wednesday, and Thursday — at 790.5 mg per 1,000 people per day, while Antwerp leads on weekend use — Friday, Saturday, Sunday and Monday ...
-
Organic Matter in Drinking Water: A Guide for Simple Online Monitoring
Control of dissolved organics has been one of the highest priority concerns for most water treatment plants for over 20 years. Organics monitoring is an even more critical issue today in the face of more stringent regulations and concerns around trace organics, emerging contaminants, and even counter-terrorism or water security. Despite the critical need, many plants still rely primarily on ...
-
ASTM Standards Help Meet Need for Clean Water
The new ASTM Water Portal provides a single access point to standards and related information about ASTM International’s diverse committees working to protect and monitor this vital global resource. Clean and safe water is the underpinning of the quality of life for people around the world. Global economies depend on water, whether it’s to support the manufacturing of goods across ...
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you