Emerging Contaminants - Science topic

I'm working on the method development for the analysis of various PPCPs and emerging contaminants in aquatic environments, currently focusing on SPE recovery by spiking compounds in Milli-Q water. Using the OASIS HLB cartridge, I’m achieving good recoveries for most compounds, but triclosan remains problematic. My method involves washing with 5% methanol in water and eluting with methanol. I've tested different pH levels (pH 2, 4, 7, 10) and various elution solvents (methanol, acidified methanol, basic methanol, methanol with ethyl acetate, and methanol with DCM), yet I haven't recovered triclosan. I even tried DCM, expecting it would help, but saw no improvement. I am now planning to collect samples at each SPE stage after sample loading to pinpoint where triclosan is being lost. I’m using nylon 0.2 filters with syringes and all glassware throughout the process, but I’m struggling to identify the cause of the issue. Could anyone share their thoughts on this? Thanks

Subject: Invitation to Contribute a Book Chapter to " Emerging Contamination of Microplastics in Soil, Terrestrial Plants, and Food Chain: Impacts, Remediation, and Eco-friendly Solutions" - Springer Book Series "Handbook of Environmental Chemistry" Dear Professors and Researchers, it is my great pleasure to invite you to contribute a high-quality book chapter to this outstanding book, which will be published in the most prestigious book series in Springer. Please read the attached invitation. We look forward to your positive response. Email: Hebaelbasiouny1@gmail.com

I am glad to announce the 18th International Symposium on Persistent Toxic Substances and Health (ISPTS-2024) to be held in Chania (Greece, Sept 14-19, 2024) Abstract submission is now open till April 15, 2024. Abstract submission should be done through the EASYCHAIR platform www.ispts2024.gr Damia Barcelo will be the first plenary speaker Emerging Contaminants: Risk and Challenges for Water Quality, Water Reuse and Plant Uptake. Solutions using advanced treatment technologies in Europe

Are adsorption systems superior to membrane filtration systems for purifying drinking water, especially in removing emerging contaminants? If yes, why?

In water quality assessment, the presence of Pesticides and various organic compounds( including emerging contaminants ) will have a deeper impact on human health and the environment. Even usage of the highly sophisticated HPLC, LC, Methods will also have the financial constraint for the researcher in low-income countries due to lack of funds. Hence What are other alternative methods that would give information on the concentration of the pollutants?

Can a biosensor be utilized?

Using marine organisms ( in particular demersal fish) I would like to study the effect of emerging contaminants and multiple stressor in these communities. Do you have any advice/recommendation?

Hi all,

Please click the following link: https://authors.elsevier.com/a/1cOgl7tGO%7EDnCk

Please feel free to download, read & cite the article.

Thanks.

Hello

I am developing a soil column experiment to study pharmaceuticals transport and attenuation.I would like to know If is better to use a glass or a PVC column to perform this experiment and why

I would be very grateful for any help

I investigate PPCPs in surface water isotopically standards are very expensive, I need an alternative internal standard to quantify my analytes simultaneously.

I am developing a soil column experiment to study antibiotic transport and attenuation. Most works in the literature perform a saturation with a CaCl2 solution in the soil before performing the leaching experiment. I would like to know the reason for this saturation with CaCl2. I have not found any work that explains the reason for this saturation.

I would be very grateful for any help.

Emerging contaminants affect the food chain in long term process. I am looking for material related to this topic????

Emerging contaminants are present in traces in water, air and soil. these can not be removed by conventional treatment methods. ECs are classified on the basis of their causes or sources of origin such as pharmaceuticals, agricultural ECs etc

Emerging contaminants

Groundwater

I am interested to study the effects of some new emerging contaminants of water for toxicological analysis using fish. I want to find some contaminats that are environmentally relevent and not much explored.

Water is becoming an increasingly scarce resource. Oil-field frac water has now been used to grow Bermuda grass. Recycled wastewater, as a broad class, is being converted to drinking water as well as water for irrigating crops consumed raw. Some crop plants can bioaccumulate toxins and pathogens. The water quality standards, if they exist, vary. The lab tests may or may not reflect reality. This variation in the background would seem to raise questions as to the prudence of its use in certain instances. Is the water safe or is it just technically legal? If the former-----well and good, but if the latter?

At the 2006 at the Environmental Law Conference in Yosemite, various papers were delivered. Session # 27 was to contain some interesting insight into an area known as "non-action by regulators". One of the session's papers was on pharmaceuticals in groundwater. Of particular interest was a paper undertaking the analysis of the Safe Drinking Water Act. Its author, one of the US/EPA drinking water toxicologists finished his delivered paper with the following: “Bottom line on almost all of the “emerging” contaminants that have attracted attention: It will be a long time, if ever, before they are regulated under the SDWA.” But, that was an issue raised about the SDWA. What about other standards?

Are the standards failing to keep up with the input of emerging contaminants? EPA, per TSCA, estimated an addition of somewhere between 500 and 600 new chemicals per year. What might be the range of potential impacts to the human metabolic processes? What percentage enter the aquatic resource base? Who is following this and are those impacts growing or are we just better able to measure them? Does the regulatory community really know? What are the costs to know, and conversely, to not know? Are these questions warranting an answer? These are some questions that come to mind.

To look at this general policy area, I'd like to single out just one of the many metabolic systems that might be affected by uncontrolled emerging contaminants. Of interest because of its critical metabolic functions I will want to briefly look at the mitochondria as a point of discussion.

I tried to print your large paper, but that failed. Can you send a printable form?

Dr Edo McGowam

Is it possible to consider the antibiotics that used in  pharmaceutical products for livestock as emerging contaminants? or there are some specified antibiotics like sulfamethoxazole  that should be considered as emerging contaminants.

Is anyone familiar with any monitoring projects to study trends in emerging contaminants in developing countries?

Emerging Contaminants like Prescription and non-prescription drugs, Home care products, Veterinary and human antibiotics, Industrial and household products, Sex and steroidal hormones, Other endocrine disrupters

Off course, regulation will be the determining factor, but when do you expect things to change significantly?