A Low-cost Digital Spectrophotometer for Heavy Metal Absorbance Measurements

Yulkifli,; Dewantara, Kelvin Septa; Sari, Mona Berlian; Ramli, Ramli; Razi, Fakhrur; Handayani, Windri

doi:10.1134/s0020441223010256

Cited by 3 publications

(1 citation statement)

References 20 publications

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“…Connecting the Node-MCU board to an existing Wi-Fi transmitter is the first step (WLAN). For the first time, the Wi-Fi transmitter reveals the SSID and password before connecting [18] [19]. If the board is not linked, the procedure will be repeated until it is connected, and if it is connected to the Wi-Fi transmitter, this board will be able to access the internet.…”

Section: Software Designmentioning

confidence: 99%

Initial Design of IoT-Based Earthquake Intensitymeter Using MMI Scale with Smartphone Display

Yulkifli,

Nofriandi,

Triyono

et al. 2024

J. Phys.: Conf. Ser.

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This paper discusses the initial design of an earthquake intensitymeter measuring instrument using the IoT-based MMI scale. This research is motivated by the lack of instrumentation technology applied to the community for earthquake mitigation, which is related to the geographical location of Indonesia in earthquake-prone areas. The existing earthquake intensitymeter instrument still has shortcomings in terms of hardware and data acquisition. So this paper tries to provide a solution to the problem by using an MPU6050 accelerometer sensor that can measure PGA values simultaneously on three axes. This system is also equipped with an IoT-based intensitymeter for data acquisition that can be accessed via smartphone. In this system, the MPU6050 sensor is tested for characteristics first using the UC Berkeley Seismological Myshake application, and the average linearity test data obtained is 0.994. The data acquisition system is webserver-based so that every bit of data read every second will be sent to the webserver. The webserver is also equipped with a real-time measurement graph, and every smartphone device can access the data using the IP address of the webserver.

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Section: Software Designmentioning

confidence: 99%

Initial Design of IoT-Based Earthquake Intensitymeter Using MMI Scale with Smartphone Display

Yulkifli,

Nofriandi,

Triyono

et al. 2024

J. Phys.: Conf. Ser.

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Precision and Versatility in Color Sensing: A Comprehensive Characterization of the TCS3200 Using Time Domain Analysis

I.,

Avalos-Gonzalez

2024

2024 International Conference on Electrical, Computer and Energy Technologies (ICECET

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Kajian Cemaran Logam Berat Timbal (Pb), Kadmium (Cd), Dan Merkuri (Hg) Pada Sayuran Di Daerah Pertambangan Aceh Jaya Secara Spektrofotometri Serapan Atom.

Kurniaty,

Adiyana,

Yusuf

et al. 2024

JPS

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Cemaran logam berat pada sayuran menjadi ancaman bagi manusia, terutama pada ambang batas yang telah ditentukan. Pada penelitian ini telah dilakukan analisa logam Pb, Cd, dan Hg menggunakan metode Flame - Atomic Absorption Spectrometry (F-AAS) dan Vapor Generation Accesory - Atomic Absorption Spectrometry (VGA-AAS) pada kawasan pertambangan didaerah kecamatan Krueng Sabee, Kabupaten Aceh Jaya, Provinsi Aceh. Validasi metode dilakukan untuk mendapatkan hasil analisis logam berat yang akurat pada sampel. Hasil menunjukkan bahwa cemaran logam Pb tertinggi terdapat pada sampel daun singkong I dengan kadar 2,44 ± 1,33 mg/Kg dan yang terendah ditemukan pada sampel bayam III dengan kadar 0,15 ± 0,07 mg/Kg. Kandungan Pb yang tinggi juga ditemukan pada sampel kangkung I dan Bayam I yang diperoleh pada daerah dekat dengan kawasan pertambangan dengan kadar masing-masing 1,07 ± 0,59 mg/Kg dan 0,93 ± 0,50 mg/Kg. Kandungan cemaran logam Cd tertinggi ditemukan pada sampel kangkung II dengan kadar yaitu 0,11 ± 0,01 mg/Kg dan cemaran logam Cd terendah dengan kadar 0,02 ± 0,01 mg/Kg terdapat dalam sampel daun singkong II. Kandungan kadar logam Hg tertinggi yaitu 0,58 ± 0,12 mg/Kg ditemukan dalam sampel daun singkong I dan kadar yang terendah yaitu 0,04 ± 0,02 mg/Kg yang dimiliki oleh sampel bayam III. Cemaran logam Hg pada semua sampel sayuran menunjukkan kadar yang berada diatas baku mutu SNI 7387 tahun 2009 yang telah ditetapkan yaitu 0,03 mg/Kg. Baku mutu untuk cemaran logam Pb dan Cd yaitu masing-masing 0,5 mg/Kg dan 0,2 mg/Kg. Penelitian ini menunjukkan perlunya pemantauan pemerintah tentang cemaran logam berat di area pertanian di dekat kegiatan pertambangan untuk memastikan konsumsi makanan yang aman.

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A Low-cost Digital Spectrophotometer for Heavy Metal Absorbance Measurements

Cited by 3 publications

References 20 publications

Initial Design of IoT-Based Earthquake Intensitymeter Using MMI Scale with Smartphone Display

Initial Design of IoT-Based Earthquake Intensitymeter Using MMI Scale with Smartphone Display

Precision and Versatility in Color Sensing: A Comprehensive Characterization of the TCS3200 Using Time Domain Analysis

Kajian Cemaran Logam Berat Timbal (Pb), Kadmium (Cd), Dan Merkuri (Hg) Pada Sayuran Di Daerah Pertambangan Aceh Jaya Secara Spektrofotometri Serapan Atom.

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