|
|
Ecotoxicity of selected musk compounds
Cvikýřová, Zuzana ; Vávrová, Milada (referee) ; Zlámalová Gargošová, Helena (advisor)
Products of daily use, which are mainly cosmetics and personal care products could significantly affect the environment. Recently, in terms of environmental protection, organic compounds responsible for the pleasant smell of these products - synthetic fragrances or musk compounds - are often mentioned. This diploma thesis aims to assess the ecotoxicity of several new substances from the group linear (alicyclic) musk compounds. From this group following fragrance ingrediens were tested: lilial, linalool, arocete and aroflorone. Since the majority of their residues enter the aquatic ecosystem, aquatic freshwater crustacean Daphnia magna and Thamnocephalus platyurus and aquatic plant Lemna minor were selected as test organisms. Individual ecotoxicity of above mentioned substances was evaluated as well as toxicity of binary mixture of arofloron and linalool on organisms Daphnia magna and Thamnocephalus platyurus. Based on the test results the ecotoxicological values LC50, EC50 and IC50 for the tested substances were evaluated and their ecotoxicity was compared. Lilial showed the highest ecotoxicity. Value of 24h EC50 for organism Daphnia magna was 2.13 mg/l and value of 24h LC50 for the organism Thamnocephalus platyurus was 10.86 mg/l.
|
|
|
The use of biochar as a sorption material for the removal of synthetic fragrances from water
Kašparová, Jarmila ; Zlámalová Gargošová, Helena (referee) ; Mravcová, Ludmila (advisor)
Synthetic fragrances (musk) are artificially produced organic compounds. It is used as fragrance ingredient in personal care products. Substances from this group have the ability to withstand the cleaning process in wastewater treatment plants. The physico-chemical properties of musk compounds cause their accumulation in the living and non-living components of the ecosystem, where they behave as persistent pollutants. The adsorption process is considered to be one of the most widely used separation and purification processes. The adsorption processes of a solution of sixteen synthetic fragrances took place with biochar and activated carbon. Solid phase microextraction (SPME) was used as a method for extracting analytes. Gas chromatography coupled with mass spectrometry (GC-MS) was applied for final analysis, time of flight analyzer was used as detector. The data were fitted with adsorption isotherms.
|
|
|
The ecotoxicological evaluation of musk compounds
Lapčíková, Alena ; Beklová, Miroslava (referee) ; Doležalová Weissmannová, Helena (advisor)
This master’s thesis is focused on evaluation of synthetic musk fragrances using ecotoxicity tests. Four musk fragrances were tested – Galaxolide, Tonalide, Musk ketone and Musk xylene. Four alternative ecotoxicity tests with living organisms, one standard ecotoxicity test and three fytotests were used for evaluation of ecotoxicity. Alternative tests were performed on crustaceans Daphnia magna and Thamnocephalus platyurus, brine shrimp Artemia salina and rotifer Brachionus calicyflorus. Root growth inhibition test of Sinapis alba, root growth inhibition test of Lactuca sativa, root growth inhibition test of Allium cepa and growth inhibition test of Lemna minor were performed in the terms of fytotests. On the basis of the results the values of EC50, IC50 and LC50 were determined and the ecotoxicity of musk compounds was evaluated.
|
|
|
Musk compounds in water ecosystem
Guryčová, Hana ; Čáslavský, Josef (referee) ; Vávrová, Milada (advisor)
Synthetic fragrances or MUSK compounds are artificialy synthetised organic substances, used as fragrant constituents in various homecare products, such as cosmetics, detergents, air fresheners etc. The aim of diploma thesis was the quantification of some selected MUSK compounds in the influent and efluent of the water treatment plants.The method of quantification of MUSK compounds in organic matrix was also optimised during the research. Two modifications of solid phase microextraction were tested and evaluated. The analytes were identified and quantified by gas chromatography - mass spectrometry (GC/MS). The results were used to evaluate the amount of MUSK compounds in sewage waters and the ability of various water treatment plants to eliminate this kind of pollution from the water during the treatment process.
|
|
|
The use of biochar as a sorption material for the removal of synthetic fragrances from water
Kašparová, Jarmila ; Zlámalová Gargošová, Helena (referee) ; Mravcová, Ludmila (advisor)
Synthetic fragrances (musk) are artificially produced organic compounds. It is used as fragrance ingredient in personal care products. Substances from this group have the ability to withstand the cleaning process in wastewater treatment plants. The physico-chemical properties of musk compounds cause their accumulation in the living and non-living components of the ecosystem, where they behave as persistent pollutants. The adsorption process is considered to be one of the most widely used separation and purification processes. The adsorption processes of a solution of sixteen synthetic fragrances took place with biochar and activated carbon. Solid phase microextraction (SPME) was used as a method for extracting analytes. Gas chromatography coupled with mass spectrometry (GC-MS) was applied for final analysis, time of flight analyzer was used as detector. The data were fitted with adsorption isotherms.
|
|
|
Ecotoxicity of selected musk compounds
Cvikýřová, Zuzana ; Vávrová, Milada (referee) ; Zlámalová Gargošová, Helena (advisor)
Products of daily use, which are mainly cosmetics and personal care products could significantly affect the environment. Recently, in terms of environmental protection, organic compounds responsible for the pleasant smell of these products - synthetic fragrances or musk compounds - are often mentioned. This diploma thesis aims to assess the ecotoxicity of several new substances from the group linear (alicyclic) musk compounds. From this group following fragrance ingrediens were tested: lilial, linalool, arocete and aroflorone. Since the majority of their residues enter the aquatic ecosystem, aquatic freshwater crustacean Daphnia magna and Thamnocephalus platyurus and aquatic plant Lemna minor were selected as test organisms. Individual ecotoxicity of above mentioned substances was evaluated as well as toxicity of binary mixture of arofloron and linalool on organisms Daphnia magna and Thamnocephalus platyurus. Based on the test results the ecotoxicological values LC50, EC50 and IC50 for the tested substances were evaluated and their ecotoxicity was compared. Lilial showed the highest ecotoxicity. Value of 24h EC50 for organism Daphnia magna was 2.13 mg/l and value of 24h LC50 for the organism Thamnocephalus platyurus was 10.86 mg/l.
|
|
|
The ecotoxicological evaluation of musk compounds
Lapčíková, Alena ; Beklová, Miroslava (referee) ; Doležalová Weissmannová, Helena (advisor)
This master’s thesis is focused on evaluation of synthetic musk fragrances using ecotoxicity tests. Four musk fragrances were tested – Galaxolide, Tonalide, Musk ketone and Musk xylene. Four alternative ecotoxicity tests with living organisms, one standard ecotoxicity test and three fytotests were used for evaluation of ecotoxicity. Alternative tests were performed on crustaceans Daphnia magna and Thamnocephalus platyurus, brine shrimp Artemia salina and rotifer Brachionus calicyflorus. Root growth inhibition test of Sinapis alba, root growth inhibition test of Lactuca sativa, root growth inhibition test of Allium cepa and growth inhibition test of Lemna minor were performed in the terms of fytotests. On the basis of the results the values of EC50, IC50 and LC50 were determined and the ecotoxicity of musk compounds was evaluated.
|
|
|
Musk compounds in water ecosystem
Guryčová, Hana ; Čáslavský, Josef (referee) ; Vávrová, Milada (advisor)
Synthetic fragrances or MUSK compounds are artificialy synthetised organic substances, used as fragrant constituents in various homecare products, such as cosmetics, detergents, air fresheners etc. The aim of diploma thesis was the quantification of some selected MUSK compounds in the influent and efluent of the water treatment plants.The method of quantification of MUSK compounds in organic matrix was also optimised during the research. Two modifications of solid phase microextraction were tested and evaluated. The analytes were identified and quantified by gas chromatography - mass spectrometry (GC/MS). The results were used to evaluate the amount of MUSK compounds in sewage waters and the ability of various water treatment plants to eliminate this kind of pollution from the water during the treatment process.
|
guest ::
