Environmental stability of arsenic-protein complex | |
| Author | Lee, Yi Te |
| Call Number | AIT RSPR no.EV-01-01 |
| Subject(s) | Arseni--Toxicology Arsenic--Environmental aspects |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of mMaster of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. EV-01-01 |
| Abstract | By analyzing accumulated arsenic (As) in hair, As level can be identified for chronic arsenic toxicity. The relationship between arsenic levels and degree of toxicity is only very approximate. The objectives of this study are to observe the pH stability and biodegradability of arsenic-keratin complex in hair. The experiment was set up at different pH (4, 7, 10) and extraction time. The biodegradability test was carried in anaerobic condition. The arsenic concertration was measured by Atomic Absorpting Spectrophotometer associated with arsine hydride generator. In the pH range of 4 to 10, the predominant As3+ compound is neutral in charge, while the AS5+ species are negatively charged. The arsenic release percentage increased with the extraction time. The arsenic released in lower pH shown higher concentration than that of higher pH. For the biodegradability tes, it did not show any significant amount of arsenic. The pH and extraction time affects the arsenic-keratin complexes in hair. Nevertheless, compare wtih the intital arsenic concentration in hair, the released percentage is quite low, which signifies that arsenic-keratin complex(hair) is a stable compound. |
| Year | 2001 |
| Corresponding Series Added Entry | Asian Institute of Technology.|tResearch studies project report ; no. EV-01-01 |
| Type | Research Study Project Report (RSPR) |
| 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 and Management (EV) |
| Chairperson(s) | Preeda Parkpian; |
| Examination Committee(s) | Fukushi, kensuke;Nguyen Cong Thanh; |
| Degree | Research Studies Project Report (M. Eng.) - Asian Institute of Technology, 2001 |