โครงการ เซนเซอร์ทางเคมีไฟฟ้าสำหรับตรวจวัดไนเตรตโดยการดัดแปลงขั้วไฟฟ้าสกรีนพรินต์ด้วยนาโนคอมโพสิทของคาร์บอนรูพรุนที่เรียงตัวเป็นระเบียบกับอนุภาคนาโนทองแดง
Electrochemical sensor for nitrate detection was developed based on copper nanofoam (Cu foam) and ordered mesoporous carbon (OMC) modified screen printed carbon electrode (SPCE)y. This Cu foam/OMC/SPCE was used for nitrated detection by using amperometric system. Nitrate was determined at applied po...
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| Main Author: | |
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| Format: | Technical Report |
| Language: | Thai |
| Published: |
2022
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| Subjects: | |
| Online Access: | http://kb.psu.ac.th/psukb/handle/2016/17636 https://tnrr.nriis.go.th/#/services/research-report/detail/305203 |
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| Institution: | Prince of Songkhla University |
| Language: | Thai |
| Summary: | Electrochemical sensor for nitrate detection was developed based on copper nanofoam (Cu foam) and ordered mesoporous carbon (OMC) modified screen printed carbon electrode (SPCE)y. This Cu foam/OMC/SPCE was used for nitrated detection by using amperometric system. Nitrate was determined at applied potential of -0.625 V in flow injection system based on the reduction current of nitrate that electrocatalyzed by modified Cu foam. Under optimum conditions, the fabricated nitrate sensor provide the linear range from 0.001-5.0 mM with limit of detection (S/N ≥ 3) of 1.0 uM. The amperometric nitrate sensor demonstrated high operation stability up to 150 times. In the presence of the common interference, Mg2+, CO32-, Fe2+, Fe3+, Cland SO42-, in water, have negligible effect on the performance of this developed sensor. When applied to analyze nitrate in water samples, the % recovery are in the range of 95-110 %. |
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