The distribution of bisphenol-a/alkylphenols in water environments | |
| Author | Zang, Kaisai |
| Call Number | AIT Thesis no.EV-03-8 |
| Subject(s) | Water -- Environmental aspects Hormones Endocrine toxicology |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-03-8 |
| Abstract | Endocrine disrupting chemicals (EDCs) have been shown to produce changes in the endocrine system of organisms that may lead to increases in cancers and abnormalities in reproductive structure and function. It now is being linked as potentially responsible for various human health problems. However, many EDCs are still used widely in industrial and agricultural activities. The study of EDCs in aquatic system has been developed in several countries. However, to our knowledge, we haven't found related study in Thailand. The target EDCs in this study are 4-tert-butylphenol (BP) and nonylphenol (NP), which are degradation products of a large amount of nonionic surfactants widely used in industrial activities but not ready to degraded, and bisphenol A (BP A), which is raw material used in polyhydrocarbon and resin production. Target EDCs were analyzed, using liquid-liquid extraction followed by GC/MS. In this study, BP A was found to be a widely contaminates with a high concentration in highly polluted canAls in (or near) Bangkok (0.918 μ,g/L in Klong San Sap; 1.168 μ,g/L in Klong I of Pathum Thani and 1.282 μ,g/L in Klong Dan). NP and BP were found in higher levels in Klong Dan (0.780 μ,g/L of BP and 0.496 μ,g/L of NP), a Canal downstream of Bangplee industrial zone than in the other two without significant industrial activities. BPA was also found in a very high level in the effluent of Bang Pa-In industrial wastewater treatment plant (WWTP) (8.176 μ,g/L). The selected canals in Bangkok have a low level NP contamination but quite high level of BP A contamination. With the suggested range of estrogenic concentration, under current contamination levels, the estrogenic effects of both NP and BP A on local aquatic organisms can not be ruled out. Concerns are need on target EDCs contaminations. The water bodies with types of industrial activities involved can be mainly focused in BP and NP monitoring program and the water body polluted by both industrial and domestic wastewaters could be focused on in further BPA monitoring program. |
| Year | 2003 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-03-8 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Satoh, Hiroyasu |
| Examination Committee(s) | Nguyen Thi Kim Oanh ;Preeda Parkpian |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship. |