Penambahan Nanokristal Pada 3d Paper Based Analytical Device Yang Sensitif Dan Sederhana Untuk Deteksi Logam Berat

Azmi, Afifah Rahma (2025) Penambahan Nanokristal Pada 3d Paper Based Analytical Device Yang Sensitif Dan Sederhana Untuk Deteksi Logam Berat. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pencemaran lingkungan oleh logam berat seperti besi (Fe), tembaga (Cu), timbal (Pb), nikel (Ni), dan zinc (Zn) sangat berbahaya karena bersifatnya yang toxic dan bioakumulatif. Oleh karena itu, penting melakukan monitoring logam berat di lingkungan. Sejauh ini, monitoring logam berat membutuhkan alat yang mahal, canggih, waktu analisis lama dan operator yang ahli. Pengembangan perangkat analisis berbasis kertas mikrofluida kertas 3D (3D-µPADs) yang terimbobilisasi nanokristal organik (NCs) dapat digunakan secara efektif untuk deteksi ion logam berat. Perangkat tersebut mampu mendeteksi logam berat dengan biaya yang rendah, waktu analisis yang singkat serta kemudahan penggunaan analisis di lingkungan. Penambahan nanokristal sebanyak 100 µL dan penambahan ion logam dengan konsentrasi parts per billion (ppb) sebanyak 200 µL dapat menghasilkan perubahan warna yang terlihat oleh mata. Hal tersebut tidak memerlukan banyak peralatan dan dapat di Ion logam tembaga (Cu), timbal (Pb),nikel (Ni), dan zinc (Zn) berhasil dideteksi pada konsentrasi 25 ppb sampai 100 ppb, dengan menggunakan smartphone dan perangkat lunak ImageJ. Hasil penelitian menunjukkan bahwa penambahan ion Zn²⁺ pada Dithizone (Dithz) diperoleh nilai linearitas sebesar 0,99 dengan Limit of Detection (LoD) pada konsentrasi 23 ppb. Penambahan ion Cu²⁺ pada 1-(2-thiazolylazo)-2-naphthol (TAN) diperoleh nilai linearitas sebesar 0,99 dengan LoD pada konsentrasi 23 ppb. Penambahan ion Cu²⁺ pada Tetraphenylporphyrin (TPP) diperoleh nilai linearitas sebesar 0,98 dengan LOD pada konsentrasi 33 ppb. Pada penambahan ion Ni²⁺ pada 1-(2-pyridylazo)-2-naphthol (PAN) diperoleh nilai linearitas sebesar 0,99 dengan LoD pada konsentrasi 23 ppb.
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Environmental pollution caused by heavy metals such as iron (Fe), copper (Cu), lead (Pb), nickel (Ni), and zinc (Zn) poses serious hazards due to their toxic and bioaccumulative nature, which can lead to various adverse health effects. The monitoring of heavy metals in the environment is of critical importance. Heavy metal monitoring typically requires sophisticated and expensive instrumentation, lengthy analysis times, and operators.The development of a three-dimensional paper-based microfluidic analytical device (3D-µPAD) integrated with immobilized organic nanocrystals (NCs) offers an effective, low-cost alternative for the detection of heavy metal ions. This device enables rapid analysis, cost-efficiency, and ease of on-site application. The immobilization of 100 µL of nanocrystals combined with the addition of 200 µL of heavy metal ion solutions at parts per billion (ppb) concentrations results in visible color changes detectable by the eye. This method requires minimal equipment and is suitable for field analysis. Heavy metal ions such as Cu²⁺, Pb²⁺, Ni²⁺, and Zn²⁺ were successfully detected at concentrations ranging from 25 ppb to 100 ppb using a smartphone and ImageJ software. The results of the study showed that the addition of Zn²⁺ ions to Dithizone (Dithz) yielded a linearity (R²) of 0,99 with a limit of detection (LoD) of 23 ppb. The addition of Cu²⁺ ions to 1-(2-thiazolylazo)-2-naphthol (TAN) also produced a linearity of 0,99 with an LoD of 23 ppb. Furthermore, the addition of Cu²⁺ to Tetraphenylporphyrin (TPP) resulted in a linearity of 0.98 and an LoD of 33 ppb. For Ni²⁺ ions added to 1-(2-pyridylazo)-2-naphthol (PAN), the linearity achieved was 0,99, with an LoD of 23 ppb.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	nanokristal organik (NCs), 3D Paper-based Analytical Device (µPAD 3D),kolorimetri, sensitivitas, logam berat,organic nanocrystals (NCs), 3D Paper-based Analytical Device (µPAD 3D),colorimetry, sensitivity, heavy metals.
Subjects:	Q Science > QD Chemistry
Divisions:	Faculty of Natural Science > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Afifah Rahma Azmi
Date Deposited:	04 Aug 2025 10:34
Last Modified:	04 Aug 2025 10:35
URI:	http://repository.its.ac.id/id/eprint/126181

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