Detection of mercury and copper ions using surface plasmon resonance optical sensor.
Mercury and copper ions, Hg2+ and Cu2+, can be detected by measuring surface plasmon resonance signals with a thin chitosan layer deposited on a gold film. An amount of 0.55 ml of chitosan cross-linked glutaraldehyde solution was spin coated onto a glass cover slip at 6000 rev./min for 30 s. Changes...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Scientific Publishing Division Myu
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/25003/1/Detection%20of%20mercury%20and%20copper%20ions%20using%20surface%20plasmon%20resonance%20optical%20sensor.pdf http://psasir.upm.edu.my/id/eprint/25003/ http://www.myu-inc.jp/myukk/ |
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| Summary: | Mercury and copper ions, Hg2+ and Cu2+, can be detected by measuring surface plasmon resonance signals with a thin chitosan layer deposited on a gold film. An amount of 0.55 ml of chitosan cross-linked glutaraldehyde solution was spin coated onto a glass cover slip at 6000 rev./min for 30 s. Changes in the resonance angle (Δθ) are directly proportional to the concentration of heavy metal ions in solution (0.5–100 ppm). The sensitivities to Hg2+ and Cu2+ are 0.00743 and 0.00654 ppm−1, respectively. The gold/chitosan interface is highly sensitive to Hg2+ and Cu2+ with detection limits as low as 500 ppb. |
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