Suchergebnisse

Pharmaceuticals, Personal Care Products and Artificial Sweeteners in Asian Groundwater: A Review -- Affinity-Based Methods for the Analysis of Emerging Contaminants in Wastewater and Related Samples -- Natural Attenuation of Pharmaceuticals in the Aqueous Environment and Role of Photodegradation in Surface Water -- Impact and Fate of Microplastic in the Aquatic Environment -- Assessment of Groundwater Quality in Sri Lanka Using Multivariate Statistical Techniques -- Source and Fate of Perchlorate in the Environment: A Grave Concern for World -- Carcinogenic Nature of Emerging Contaminants: Havoc for Present and Gateway of Unhealthy Future -- Permeable Reactive Barrier: A Sustainable Groundwater Remediation Technology -- An Insight into Microbial Remediation of Hexavalent Chromium from Contaminated Water -- Current Understanding on Separation of Personal Care Products and Pharmaceuticals from Water -- Nanotechnology: An Efficient Technique of Contaminated Water Treatment and Bioremediation Methods of Water Contaminants -- Chlorophenols Dechlorination Water Treatment Using Ni-Iron Bimetallic Systems: Implications of the Degree of Chlorination, Nickel Coating, and Iron Oxide Phases.

The presence of antibiotic drug residues, antibiotic resistant bacteria, and antibiotic resistance genes in agroecosystems has become a significant area of research in recent years and is a growing public health concern. While antibiotics are used in both human medicine and agricultural practices, the majority of their use occurs in animal production where historically they have been used for growth promotion, in addition to the prevention and treatment of disease. The widespread use of antibiotics and the application of animal wastes to agricultural lands play major roles in the introduction of antibiotic-related contamination into the environment. Overt toxicity in organisms directly exposed to antibiotics in agroecosystems is typically not a major concern because environmental concentrations are generally lower than therapeutic doses. However, the impacts of introducing antibiotic contaminants into the environment are unknown, and concerns have been raised about the health of humans, animals, and ecosystems. Despite increased research focused on the occurrence and fate of antibiotics and antibiotic resistance over the past decade, standard methods and practices for analyzing environmental samples are limited and future research needs are becoming evident. To highlight and address these issues in detail, this special collection of papers was developed with a framework of five core review papers that address the (i) overall state of science of antibiotics and antibiotic resistance in agroecosystems using a causal model, (ii) chemical analysis of antibiotics found in the environment, (iii) need for background and baseline data for studies of antibiotic resistance in agroecosystems with a decision-making tool to assist in designing research studies, as well as (iv) culture- and (v) molecular-based methods for analyzing antibiotic resistance in the environment. With a focus on the core review papers, this introduction summarizes the current state of science for analyzing antibiotics and antibiotic resistance in agroecosystems, discusses current knowledge gaps, and develops future research priorities. This introduction also contains a glossary of terms used in the core reivew papers of this special section. The purpose of the glossary is to provide a common terminology that clearly characterizes the concepts shared throughout the narratives of each review paper. ; Agriculture and Food Research Initiative Competitive from USDA National Institute of Food and Agriculture [2013-68003-21256] ; We thank all of the authors who contributed papers to this special section, which would not have been possible without their efforts. This project was supported by the Agriculture and Food Research Initiative Competitive Grant no. 2013-68003-21256 from the USDA National Institute of Food and Agriculture. ; Public domain authored by a U.S. government employee