Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 318 Dispersion Stability of Nanomaterials in Simulated Environmental Media written by OECD and published by OECD Publishing. This book was released on 2017-10-09 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This test guideline describes a test procedure to gain information on dispersion stability of manufactured nanomaterials in simulated environmental media. The main purpose of this guideline is to assess the ability of a nanomaterial to attain a colloidal dispersion and to conserve this ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 318 Dispersion Stability of Nanomaterials in Simulated Environmental Media written by OECD and published by OECD Publishing. This book was released on 2017-10-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This test guideline describes a test procedure to gain information on dispersion stability of manufactured nanomaterials in simulated environmental media. The main purpose of this guideline is to assess the ability of a nanomaterial to attain a colloidal dispersion and to conserve this ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 125 Nanomaterial Particle Size and Size Distribution of Nanomaterials written by OECD and published by OECD Publishing. This book was released on 2023-07-04 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline, covering nanomaterials spanning from 1 nm to 1000 nm, is intended for particle size and particle size distribution measurements of nanomaterials.
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 301 Ready Biodegradability written by OECD and published by OECD Publishing. This book was released on 1992-07-17 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes six methods that permit the screening of chemicals for ready biodegradability in an aerobic aqueous medium. The methods are: the DOC Die-Away, the CO2 Evolution (Modified Sturm Test), the MITI (I) (Ministry of ...
Download or read book Computational Nanotoxicology written by Agnieszka Gajewicz and published by CRC Press. This book was released on 2019-11-13 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of computational methods that support human health and environmental risk assessment of engineered nanomaterials has attracted great interest because the application of these methods enables us to fill existing experimental data gaps. However, considering the high degree of complexity and multifunctionality of engineered nanoparticles, computational methods originally developed for regular (i.e., classic) chemicals cannot always be applied explicitly in nanotoxicology. Thus, the main idea of this book is to discuss the current state of the art and future needs in the development of computational modeling techniques for nanotoxicology. The book focuses on methodology. Among various in silico techniques, special attention is given to (i) computational chemistry (quantum mechanics, semi-empirical methods, density functional theory, molecular mechanics, molecular dynamics); (ii) nanochemoinformatic methods (quantitative structure–activity relationship modeling, grouping, read-across); and (iii) nanobioinformatic methods (genomics, transcriptomics, proteomics, metabolomics).
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 126 Determination of the Hydrophobicity Index of Nanomaterials Through an Affinity Measurement written by OECD and published by OECD Publishing. This book was released on 2023-07-04 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline (TG) describes a method to determine the hydrophobicity index (Hy) of nanomaterials (NMs), through an affinity measurement. Hydrophobicity is defined as "the association of non-polar groups or molecules in an aqueous environment which arises from the tendency of water to exclude non-polar molecules".
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 124 Determination of the Volume Specific Surface Area of Manufactured Nanomaterials written by OECD and published by OECD Publishing. This book was released on 2022-06-30 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline (TG) describes a harmonised procedure to determine the Volume Specific Surface Area (VSSA) of powdered solid manufactured nanomaterials (MNs).
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Degradation and Accumulation Revised Introduction to the OECD Guidelines for Testing of Chemicals Section 3 written by OECD and published by OECD Publishing. This book was released on 2006-09-11 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The OECD Guidelines for the Testing of Chemicals is a collection of about 150 of the most relevant internationally agreed testing methods used by government, industry and independent laboratories to identify and characterise potential hazards of chemicals. They are a set of tools for professionals, used primarily in regulatory safety testing and subsequent chemical and chemical product notification, chemical registration and in chemical evaluation. They can also be used for the selection and ranking of candidate chemicals during the development of new chemicals and products and in toxicology research. This group of tests covers environmental fate and behaviour. In 2017, the section 3 "Degradation and Accumulation" was renamed to " Environmental fate and behaviour" to take into account Test Guidelines measuring endpoints such as dispersion, aggregation.
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 309 Aerobic Mineralisation in Surface Water Simulation Biodegradation Test written by OECD and published by OECD Publishing. This book was released on 2004-11-23 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this test is to measure the time course of biodegradation of a test substance at low concentration in aerobic natural water and to quantify the observations in the form of kinetic rate expressions. The test is performed in batch by ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 306 Biodegradability in Seawater written by OECD and published by OECD Publishing. This book was released on 1992-07-17 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes two methods for biodegradability in seawater. The shake flask method consists on dissolution of a pre-determined amount of the test substance in the test medium to yield a concentration of 5-40 mg/l dissolved organic ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 316 Phototransformation of Chemicals in Water Direct Photolysis written by OECD and published by OECD Publishing. This book was released on 2008-10-16 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test guideline describes studies on phototransformation in water to determine the potential effects of solar irradiation on chemicals in surface water, considering direct photolysis only. It is designed as a tiered approach. The Tier 1 is based ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 304A Inherent Biodegradability in Soil written by OECD and published by OECD Publishing. This book was released on 1981-05-12 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The method described in this Test Guideline is designed for the evaluation of the mineralisation rate of a 14C-labelled compound in soil. The method is applicable to volatile or non-volatile, soluble or insoluble compounds which are not inhibitory ...
Download or read book Ecotoxicology of Nanoparticles in Aquatic Systems written by Julian Blasco and published by CRC Press. This book was released on 2019-07-19 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of nanoparticles in medicine, industrial, and other applications has triggered an interest in their potential. This book explores the use of nanoparticles related to their occurrence in the environment, their impact on biota in aquatic systems, application of new methodologies, and changes associated with new global scenarios. The book also covers the bioaccumulation and internalization of nanoparticles as key aspects to assess their uptake and discusses the methodologies for testing ENPs ecotoxicity at different trophic levels.
Download or read book Green Synthesis of Nanomaterials written by Giovanni Benelli and published by MDPI. This book was released on 2019-11-18 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nanomaterials possess astonishing physical and chemical properties. They play a key role in the development of novel and effective drugs, catalysts, sensors, and pesticides, to cite just a few examples. Notably, the synthesis of nanomaterials is usually achieved with chemical and physical methods needing the use of extremely toxic chemicals or high-energy inputs. To move towards more eco-friendly processes, researchers have recently focused on so-called “green synthesis”, where microbial, animal-, and plant-borne compounds can be used as cheap reducing and stabilizing agents to fabricate nanomaterials. Green synthesis routes are cheap, environmentally sustainable, and can lead to the fabrication of nano-objects with controlled sizes and shapes—two key features determining their bioactivity. However, real-world applications of green-fabricated nanomaterials are largely unexplored. Besides, what do we really know about their non-target toxicity? Which are their main modes of action? What is their possible fate in the environment? In this framework, the present Special Issue will include articles by expert authorities on nanomaterials synthesis and applications. Special emphasis will be placed on their impact on the environment and long-term toxicity.
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 312 Leaching in Soil Columns written by OECD and published by OECD Publishing. This book was released on 2004-11-23 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: The method described in this Test Guideline is based on soil column chromatography in disturbed soil. Two types of experiments are performed to determine (i) the leaching potential of the test substance, and (ii) the leaching potential of ...
Download or read book OECD Guidelines for the Testing of Chemicals Section 3 Test No 320 Determining Anaerobic Transformation of Chemicals in Liquid Manure written by OECD and published by OECD Publishing. This book was released on 2022-06-30 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes a standardised method to examine the transformation of chemicals in pig and cattle liquid manure under anaerobic conditions.
Download or read book OECD Guidelines for the Testing of Chemicals Section 1 Test No 113 Screening Test for Thermal Stability and Stability in Air written by OECD and published by OECD Publishing. This book was released on 1981-05-12 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Test Guideline describes methods for determining storage stability of a substance with respect to heat and air. Two methods are applicable to homogeneous solid and liquid substances and to mixtures of these: the accelerated storage test and the ...
