chemical monitoring Articles
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SynBioPro article is published
In 2021 we joined the SynBioPro project with the aim to apply DMS in bioprocess monitoring. Now an original research article has been published in Industrial & Engineering Chemistry Research. The selected substance was alpha-olefin 1-undece, which is an industrially relevant platform chemical. The monitoring was assessed with spiked samples and then trough genetically engineered ...
By Olfactomics
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Biomonitoring can measure what chemical monitoring cannot
Algae and Daphnia (waterfleas) forewarn drinking water sector Biomonitors, instruments which measure the biological effects of different substances on organisms, detect substances which cannot be detected using chemicals anaylsis methods. This is also valid for combinations of substances which are present in the water in large concentrations. A well-functioning monitor is necessary since our ...
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The Mussel Watch approach and its applicability to global chemical contamination monitoring programmes
Although the use of biological monitors has become a standard practice in different national and international programmes over the past two decades, there are several complicating factors that need to be taken into account when sampling over large geographical extensions. Species availability, physiological conditions, and climatic variables encountered over large areas of study are a few of the ...
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Chemical monitoring strategy for the assessment of advanced water treatment plant performance
A pilot-scale plant was employed to validate the performance of a proposed full-scale advanced water treatment plant (AWTP) in Sydney, Australia. The primary aim of this study was to develop a chemical monitoring program that can demonstrate proper plant operation resulting in the removal of priority chemical constituents in the product water. The feed water quality to the pilot plant was ...
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Best Known Method for Clean Fluid Sampling to Get Consistent Measurements During Offline Particle Analysis
Abstract A complete chemical quality monitoring program includes data gathered from the time chemicals are received all the way to the point of process. Throughout this monitoring program, the best known method (BKM) which provides optimal data quality and time resolution is continuous in-line monitoring. However, physical and environmental challenges posed by some chemicals and how they are ...
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Fill level monitoring of chemicals from the outside through the pipe - Case Study
Client: Chemical company (Germany) Product: Chemicals Conveyed volumes: no information Conveyor mechanism: Cooling trough Installation location: Measurement from the outside, through non-metallic window to the cooling trough What measuring process was used previously: none According to the client, the system offers the following advantages: simple and reliable easy commissioning ...
By ENVEA
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The use of traits‐based approaches and eco(toxico)logical models to advance the ecological risk assessment framework for chemicals
This paper presents a framework to diagnose and predict the effects of chemicals, integrating two promising tools to incorporate more ecology into ecological risk assessment, viz. traits‐based approaches and ecological modelling. Traits‐based approaches are increasingly used to derive correlations between the occurrence of species traits and chemical exposure from biological and chemical ...
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Product Redesign of Chemical Standards Improves Atrazine and Simazine Stability - Verified by GC
Supelco routinely monitors its chemical standard products to determine shelf-life quality. Atrazine and simazine, two triazine herbicides included in US EPA Methods 505 and 525, are unstable in methanol. This application note describes the Supelco reformulation of four chemical standards containing these analytes, each originally prepared in methanol. Accelerated stability studies demonstrated ...
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Sustainable sampling of native bromeliads for environmental monitoring
By analysing the leaves of bromeliads, the availability of chemical elements in the atmosphere can be assessed. However, sampling steps affect the reliability of using such plants for environmental quality studies. This paper describes a novel and sustainable sampling methodology for conservation units, in which small discs (6 mm diameter) of bromeliad leaves could be taken without removing ...
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Influence diagrams as decision‐making tools for pesticide risk management
The pesticide policy arena is filled with discussion of probabilistic approaches to assess ecological risk, however, similar discussions about implementing formal probabilistic methods in pesticide risk decision making are less common. An influence diagram approach is proposed for ecological risk‐based decisions about pesticide usage. Aside from technical data, pesticide risk management relies on ...
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Comparison of the performance of statistical models that predict soil respiration from forests
Soil respiration (Rs) is an important source of CO2 to the atmosphere, yet understanding the processes controlling the combined autotrophic and heterotrophic components has proven challenging. Numerous statistical models have been developed to explain Rs as a function of physical and chemical conditions, but there has been little effort to systematically evaluate and compare the performance of ...
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A spatially and temporally explicit risk assessment for salmon from a prey base exposed to agricultural insecticides
This risk assessment applied a framework for determining probable co‐occurrence of juvenile spring Chinook salmon (Oncorhynchus tshawytscha) with agricultural pesticides in the Willamette Basin, Oregon (Teply et al. this issue) to characterize risk to the threatened population. The assessment accounted for spatial and temporal distribution of 6 acetylcholinesterase‐inhibiting insecticides in ...
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Using bald eagles to track spatial (1999–2008) and temporal (1987–1992, 1999–2003, and 2004–2008) trends of contaminants in Michigan's aquatic ecosystems
The bald eagle (Haliaeetus leucocephalus) is an extensively researched tertiary predator. Studies have delineated information about its life history and the influences of various stressors on its reproduction. Due to the bald eagle's position at the top of the food web, it is susceptible to biomagnification of xenobiotics. The Michigan Department of Environmental Quality implemented a program ...
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Toxicity of the effluents of Three Pharmaceutical Companies as Assessed with a Battery of Tests
Abstract: The toxicity of 27 samples of effluents of three pharmaceutical plants located in Belgium, has been determined with the aid of a battery of tests. Besides conventional bioassays representative for three different trophic levels (microalgae withSelenastrum capricornutum, acute crustacean test withDaphnia magna, acute fish test withBrachydanio rerio), cost-effective acute bioassays have ...
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Micropollutants in European rivers: A mode of action survey to support the development of effect‐based tools for water monitoring
Environmental quality monitoring of water resources is challenged with providing the basis for safeguarding the environment against adverse biological effects from exposure to anthropogenic chemicals originating from diffuse and point sources. Although current regulatory efforts focus on monitoring and assessing a few legacy chemicals, many more anthropogenic chemicals are and will become ...
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Organic carbon at a remote site of the western Mediterranean Basin: sources and chemistry during the ChArMEx SOP2 field experiment
Abstract The ChArMEx (Chemistry and Aerosols Mediterranean Experiments) SOP2 (special observation period 2) field campaign took place from 15 July to 5 August 2013 in the western Mediterranean Basin at Ersa, a remote site in Cape Corse. During the campaign more than 80 volatile organic compounds (VOCs), including oxygenated species, were measured by different online and offline techniques. At ...
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Water trends in DWTPs for 2024: digital transformation and automation
Water treatment plants are undergoing unprecedented digital transformation. In 2024, DWTPs will continue to invest in automated technology-based plant management, streamlining their operations. First of all, digital transformation helps to centralize and control data management and therefore bring different DWTP processes together under one umbrella. These processes can be optimized using ...
By Idrica
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A tiered, integrated biological and chemical monitoring framework for contaminants of emerging concern (CECs) in aquatic ecosystems
The chemical‐specific risk‐based paradigm that informs monitoring and assessment of environmental contaminants does not apply well to the many thousands of new chemicals that are being introduced into ambient receiving waters. We propose a tiered framework that incorporates bioanalytical screening tools and diagnostic non‐targeted chemical analysis to more effectively monitor for contaminants ...
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Groundwater quality changes in a groundwater body in a poor chemical status
The chemical composition of groundwater in the Quaternary body SK1000600P in the Danube basin was analysed based on chemical analyses from 7 monitoring sites of the Slovak Hydrometeorological Institute network during 2002–2009 and 2010–2015 time periods. The current status was evaluated based on the Regulations of the Government of the Slovak Republic No 282/2010. The influence of the ...
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Evaluations of ChemTreat Solutions Automated Feed Systems at Southeast paper mill case study
A large Southeast Paper Mill was experiencing poor control with their water treatment supplier who was using pace and chemical verification instrumentation. The mill was experiencing major variances in cycle control, conductivity, P-alkalinity, and phosphate control. ChemTreat had investigated the causes of these variances and submitted their recommendations for improvement. As a result, ...
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