The environmental fate and mobility of oestrogens into soils

The behaviour of oestrogens in the environment is of great concern due to the endocrine disruption potential. The occurrence of oestrogens is reported as the most potent compounds in the environment, thus this study was conducted to determine the sorption affinity of oestrogens in different types of...

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Main Author:	Wan Atikah, Wan Omar
Format:	Thesis
Language:	English
Published:	2018
Subjects:	TA Engineering (General) Civil engineering (General)
Online Access:	http://umpir.ump.edu.my/id/eprint/24923/1/The%20environmental%20fate%20and%20mobility%20of%20oestrogens.pdf
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spelling	my-ump-ir.249232021-08-09T05:04:29Z The environmental fate and mobility of oestrogens into soils 2018-06 Wan Atikah, Wan Omar TA Engineering (General). Civil engineering (General) The behaviour of oestrogens in the environment is of great concern due to the endocrine disruption potential. The occurrence of oestrogens is reported as the most potent compounds in the environment, thus this study was conducted to determine the sorption affinity of oestrogens in different types of soils, relationship with between octanol-water partition coefficient and soil-water partititon coefficient of natural and synthetic oestrogen and distribution of oestrogen in environment. The research started with the investigation of the sorption behaviour and factors that influences the sorption behaviour of oestrogens in different type of soils. The sorption behaviour of all oestrogens indicated high association with organic carbon of the soils as sorption capacity increased when organic carbon increased. The value of Kow and Koc used to classify the mobility of oestrogens into soils and as the result, while E2 and EE2 were classified as low to immobile and E1 was slight to low. The values of organic carbon plays an important role in adsorbing an amount of oestrogens in soils. The significant effect on oestrogens’ sorption factors was observed in soils with varied temperature and pH. Based on the analysis, it was clear that the sorption mechanism of oestrogens into soils was physisorption. All the oestrogens indicated a weaker binding to all soils as sorption behaviour of oestrogens onto soils was dependent of their hydrophobicity. The relationship between octanol-water partitioning coefficient (Kow) and soil-water partitioning coefficient (Kd) was being determine from the order of sorption among oestrogens was well correlated with their octanol-water partitioning coefficient (Kow). The higher log Kow values correlated to less mobile organic chemicals into soils. It is believed that hydrophobicity of oestrogens has play a major important role in regulating the sorption of oestrogens in soils. Finally, the result of this study also indicated a considerable difference between experimental values and values generated by the computational model, Estimation Program Interface (EPISUITE). The EPISUITE software underestimate the log Kow value of estrone (E1) but overestimates log Kow 17 ẞ-estradiol (E2) and 17α-ethnylestradiol (EE2). The result also shows that EPISUITE program was overestimated the oestrogens’ partition in soils-environmental compartment. It can be concluded that by inputting the experimental values, the model changed remarkably and has given absolute values to the soil’s ambient conditions. Thus, this study showed that although the computational model was indicative, it did not accurately assess the environmental impact of pollutant. The experiments need to be conducted to obtain the real partitioning of oestrogens in environment. 2018-06 Thesis http://umpir.ump.edu.my/id/eprint/24923/ http://umpir.ump.edu.my/id/eprint/24923/1/The%20environmental%20fate%20and%20mobility%20of%20oestrogens.pdf pdf en public masters Universiti Malaysia Pahang Faculty of Civil Engineering and Earth Resources
institution	Universiti Malaysia Pahang Al-Sultan Abdullah
collection	UMPSA Institutional Repository
language	English
topic	TA Engineering (General) Civil engineering (General)
spellingShingle	TA Engineering (General) Civil engineering (General) Wan Atikah, Wan Omar The environmental fate and mobility of oestrogens into soils
description	The behaviour of oestrogens in the environment is of great concern due to the endocrine disruption potential. The occurrence of oestrogens is reported as the most potent compounds in the environment, thus this study was conducted to determine the sorption affinity of oestrogens in different types of soils, relationship with between octanol-water partition coefficient and soil-water partititon coefficient of natural and synthetic oestrogen and distribution of oestrogen in environment. The research started with the investigation of the sorption behaviour and factors that influences the sorption behaviour of oestrogens in different type of soils. The sorption behaviour of all oestrogens indicated high association with organic carbon of the soils as sorption capacity increased when organic carbon increased. The value of Kow and Koc used to classify the mobility of oestrogens into soils and as the result, while E2 and EE2 were classified as low to immobile and E1 was slight to low. The values of organic carbon plays an important role in adsorbing an amount of oestrogens in soils. The significant effect on oestrogens’ sorption factors was observed in soils with varied temperature and pH. Based on the analysis, it was clear that the sorption mechanism of oestrogens into soils was physisorption. All the oestrogens indicated a weaker binding to all soils as sorption behaviour of oestrogens onto soils was dependent of their hydrophobicity. The relationship between octanol-water partitioning coefficient (Kow) and soil-water partitioning coefficient (Kd) was being determine from the order of sorption among oestrogens was well correlated with their octanol-water partitioning coefficient (Kow). The higher log Kow values correlated to less mobile organic chemicals into soils. It is believed that hydrophobicity of oestrogens has play a major important role in regulating the sorption of oestrogens in soils. Finally, the result of this study also indicated a considerable difference between experimental values and values generated by the computational model, Estimation Program Interface (EPISUITE). The EPISUITE software underestimate the log Kow value of estrone (E1) but overestimates log Kow 17 ẞ-estradiol (E2) and 17α-ethnylestradiol (EE2). The result also shows that EPISUITE program was overestimated the oestrogens’ partition in soils-environmental compartment. It can be concluded that by inputting the experimental values, the model changed remarkably and has given absolute values to the soil’s ambient conditions. Thus, this study showed that although the computational model was indicative, it did not accurately assess the environmental impact of pollutant. The experiments need to be conducted to obtain the real partitioning of oestrogens in environment.
format	Thesis
qualification_level	Master's degree
author	Wan Atikah, Wan Omar
author_facet	Wan Atikah, Wan Omar
author_sort	Wan Atikah, Wan Omar
title	The environmental fate and mobility of oestrogens into soils
title_short	The environmental fate and mobility of oestrogens into soils
title_full	The environmental fate and mobility of oestrogens into soils
title_fullStr	The environmental fate and mobility of oestrogens into soils
title_full_unstemmed	The environmental fate and mobility of oestrogens into soils
title_sort	environmental fate and mobility of oestrogens into soils
granting_institution	Universiti Malaysia Pahang
granting_department	Faculty of Civil Engineering and Earth Resources
publishDate	2018
url	http://umpir.ump.edu.my/id/eprint/24923/1/The%20environmental%20fate%20and%20mobility%20of%20oestrogens.pdf
_version_	1783732081891737600

The environmental fate and mobility of oestrogens into soils

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