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Nanosafety and the Current Trends in the Risk Assessment of Nanoparticles
Valovič, Stela ; Poláčik, Ján (referee) ; Adamec, Vladimír (advisor)
This diploma thesis deals with the current state of nanosafety. The aim of this paper was to review and critically analyze approaches to facilitate the risk assassment of nanomaterials. In the first part it provides an overview of the most important methods and software tools that are used in this field. Methods were analyzed against a set of relevant criteria. Criteria include consideration of exposure, life cycle and physicochemical properties, transparency, applicability and the field of application. Different criteria were chosen for the software tools. Based on results, a new approach was suggested. The approach takes the form of a diagram based on questions. The purpose of the suggested approach is to recommend the most relevant method, tool or their combination to assess the safety of a nanomaterial depending on known characteristics. The approach was also implemented in a software tool.
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Nanosafety and the Current Trends in the Risk Assessment of Nanoparticles
Valovič, Stela ; Poláčik, Ján (referee) ; Adamec, Vladimír (advisor)
This diploma thesis deals with the current state of nanosafety. The aim of this paper was to review and critically analyze approaches to facilitate the risk assassment of nanomaterials. In the first part it provides an overview of the most important methods and software tools that are used in this field. Methods were analyzed against a set of relevant criteria. Criteria include consideration of exposure, life cycle and physicochemical properties, transparency, applicability and the field of application. Different criteria were chosen for the software tools. Based on results, a new approach was suggested. The approach takes the form of a diagram based on questions. The purpose of the suggested approach is to recommend the most relevant method, tool or their combination to assess the safety of a nanomaterial depending on known characteristics. The approach was also implemented in a software tool.
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Hazard analysis of nanoparticles in the workplace environment and design of protective measures against their side effects
Skřehotová, Marcela ; Tesařová, Eva (advisor) ; Mráz, Jaroslav (referee)
The diploma thesis is focused on so called new risks, which currently include the risks associated with various nanomaterials - their production, introduction into practice and use. The paper summarizes the up-to-date knowledge about the characteristics of nanoparticles used and it proposes a procedure to estimate potential consequences of their exposure. The experimental part of the paper is represented by a case study, which introduces the practical application of the proposed procedure aiming at estimated exposure to nanoparticles on the workplace where metal working is executed and resulting occupational risks. The aim of this part of the study was to measure selected parameters of aerosols using a special measuring system working on the principle of laser photometry combined with diffusion charger and detector using Faraday cage. The object of the measurements was to determine the numerical concentration of nanoparticles present in working environment and the representation of size groups of submicron particles. The measurement procedure was designed in accordance with ČSN EN 689, ČSN EN ISO 16000-1 and ČSN ISO 8756 standards and data gained were subsequently interpreted. Afterwards the results were used to design the measures to reduce the risk of health damage when facing chronic inhalation...
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