|
|
| Type |
Oral Presentation |
| Area |
Oral Presentation of Young Analytical Chemists II |
| Room No. |
Room 201A |
| Time |
FRI 09:00-: |
| Code |
ANAL2.O-1 |
| Subject |
A simple and rapid detection of As3+ in real water using a 3-nitro-L-tyrosine |
| Authors |
Jin-Ho Park
Department of Chemistry, Gwangju Institute of Science and Technology, Korea |
| Abstract |
Here, a simple and rapid As3+ detection method using a 3-nitro-L-tyrosine (N-Tyr) is reported. A reaction between As3+ and N-Tyr induces a prompt color change to vivid yellow, and absorbance at 430 nm is increased also. The selectivity for As3+ is confirmed by comparison of various metal ions such as Hg2+, Pb2+, Cd2+, Cr3+, Mg2+, Ni2+, Cu2+, Fe2+, Ca2+, Zn2+, Mn2+. Also, binding site of N-Tyr, binding affinity and reaction molar ratio between As3+ and N-Tyr are investigated. The specific reaction is utilized to design a sensor that enables quantitative detection of As3+ in the range from 0.1 to 100 μM. In a linear dynamic range from 0.1 to 1 μM, good linearity (R2 = 0.9654) and limit of detection (LOD) of 31.1 nM (3.3σ) are obtained. Furthermore, applicability for analysis of real samples, e.g., tap and river water, is successfully confirmed with good recoveries using the As3+-spiked real samples. We believe that the proposed As3+ sensor can be effectively utilized in environmental fields, e.g., water management facilities, with simplicity, rapidity and ease of usage. |
| E-mail |
jhp1223@gist.ac.kr |
|
121st General Meeting of the KCS