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Nanang Tri Widodo
Jurusan Kimia Fakultas MIPA Universitas Brawijaya Jalan Veteran Malang 65145
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Journal : PROSIDING SEMINAR KIMIA

 1 
Panitia Seminar Nasional Kimia 2023 Widodo, Nanang Tri
PROSIDING SEMINAR KIMIA Vol 2 No 1 (2023): Prosiding SNK 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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PengarahDr. Dra. Hj. Ratna Kusuma, M.SiProf. Dr. Bohari, M.Si Penanggung JawabDr. Dadan Hamdani, M.SiDr. Yanti Puspita Sari, M.SiDr. Rudi Kartika, M.Si Ketua Ritbey Ruga, M.P., Ph.D SekretarisRita Hairani, M.Sc Siti Maisarah, S.Pd BendaharaDr. Noor Hindryawati. M.Si AnggotaDr. Saibun Sitorus, M.SiDr. Subur P. Pasaribu, M.Si Dr. Chairul Saleh, M.SiAlimuddin, M.SiRitson Purba, M.SiHusna Syaima, M.SiIrfan Ashari Hiyahara, M.SiMoh. Saiful Arif, S.Pd. M.SiDjihan Ryn Pratiwi, M.SiVeliyana Londong A, M.Si Ika Yekti Lianasari, M.SiDr. Winni Astuti, M.SiNanang Tri Widodo, M.SiAhmad Maulana, S.SiMuhammad Fadlianur, S.SiArbain Wawinca, SERahman Raya, S.PdManja’a Khasanah,S.Si
DETERMINATION OF CONTAMINATION LEVELS OF HEAVY METALS LEAD (Pb) AND CADMIUM (Cd) IN FOOD SAMPLES BY CARBON ATOMIC ABSORPTION SPECTROPHOTOMETRY (GRAPHITE FURNACE ATOMIZER AAS/ GF-AAS) Oktavia, Dwina Putri; Panggabean, Aman Sentosa; Pasaribu, Subur P.; Widodo, Nanang Tri
PROSIDING SEMINAR KIMIA Vol 2 No 1 (2023): Prosiding SNK 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Research on the determination of lead (Pb) and cadmium (Cd) heavy metal contamination levels using the GFA-AAS method has been carried out in food samples. The aim of this study was to determine the levels of lead (Pb) and cadmium (Cd) metal contamination so that they do not exceed the threshold limit set according to the Food and Drug Supervisory Agency Regulation No. 9 of 2022. The research was carried out by destroying the sample using HNO3(p) and H2O2(p) into microwave. Additions were made of matrix modifiers (mixture of Mg(NO­3)2. 6H2O in 0,5% HNO3 and 1% NH4H2PO4 in 0,5% HNO3 (1:1)). Determination of heavy metal content in food was determined by the Carbon Furnace Atomic Absorption Spectrophotometry (GFA-AAS) method with a wavelength of 283.3 nm for lead (Pb) and 228.8 nm for cadmium (Cd). The results of measuring the levels of heavy metal lead (Pb) contamination in food samples were 0,016 mg/kg and 0,015 mg/kg for the heavy metal cadmium (Cd). Based on the Regulation of the Food and Drug Supervisory Agency No 9 of 2022 concerning Requirements for Heavy Metal Contamination in Processed Foods, the maximum limit for metal contamination of lead (Pb) and cadmium (Cd) in processed food is 0,30 mg/kg, where the results obtained do not exceed threshold, so that the sample is fit for consumption. Keywords: Lead, Cadmium, Carbon Furnace Atomic Absorption Spectrophotometry, Food.
Keynote Speaker Widodo, Nanang Tri
PROSIDING SEMINAR KIMIA Vol 2 No 1 (2023): Prosiding SNK 2023
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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SEMINAR NASIONAL KIMIA 2023 Keberlanjutan Riset Kimia Berbasis Tropical Studies dan Aplikasinya Guna Mendukung Pembangunan Ibukota Negara Baru Keynote Speakers: Prof. Dr. Ir. Erwin, M.Si (Universitas Mulawarman) Dr. rer. nat. Chaidir, Apt. (Badan Riset dan Inovasi Nasional) Dr. rer. nat. Fifi Fitriyah Masduki, M.Sc (Perhimpunan Biokimia dan Biologi Molekular Indonesia) Hanggara Sudrajat, Ph.D (Badan Riset dan Inovasi Nasional; Institute of Physical Chemistry, Polish Academy of Sciences)
FRONT MATTER SNK 2024 Widodo, Nanang Tri
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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ANALISIS POTENSI PENCEMARAN LOGAM BERAT TIMBAL (Pb) PADA LINDI HIDROPONIK TANAMAN PAKCOY DENGAN METODE SPEKTROFOTOMETER SERAPAN ATOM Azizah, Siti Halimatuz Zahroh; Alimuddin, Alimuddin; Widodo, Nanang Tri
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Analysis of the heavy metal lead (Pb) has been carried out in hydroponic leachate using nutrients (A-B mix) of pak-choy plants using the Atomic Absorption Spectrophotometer method. The samples used were 5 samples originating from 5 hydroponic installations at 2 different hydroponic cultivation locations. The research was carried out in the 2nd and 4th weeks of the hydroponic planting period. The sample preparation was wet destruction using HNO3. The research results showed that the levels of the heavy metal lead (Pb) in the 2nd week of testing, namely sample A was 0.9418 ppm: sample B was 0.9418 ppm; sample C was 2.2906 ppm; sample D was 2.2906 ppm and sample E was 6.3488 ppm. However, in the 4th week of testing no lead heavy metal contamination was found, the five samples used showed results <0.0016. So the results obtained are still below the quality standard value, namely a maximum of 5 ppm based on Minister of Agriculture Regulation No.261/KPTS/SR.310/M/4/2019. Keywords: Hydroponic leachate, Nutrition (A-B mix), Lead (Pb)
FRONT MATTER SNKT 2024 Widodo, Nanang Tri
PROSIDING SEMINAR KIMIA Vol 3 No 2 (2025): Prosiding SNKT 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Co-Authors Ahmad, Atika Aulia Akhmad Fauzi Alimuddin - Aman Sentosa Panggabean Ananda, Azizah Fithri Anuar, Hajar Arief, M. Syaiful Arisa, Putri Azizah, Siti Halimatuz Zahroh Bohari Yusuf Budi Hastuti Djihan Ryn Pratiwi, Djihan Ryn Eva Marliana, Eva Gaanty Pragas Maniam, Gaanty Pragas Henny Pagoray, Henny Hiyahara, Irfan Ashari Husna Syaima Isyahro, Novia Rahmawati Juliani, Okti Nabila, Sahira Fara Noor Hindryawati, Noor Nurfarizha, Harisma Oktavia, Dwina Putri Putri, Raisya Karina Rahmadi, Mohammad Zulfian Ramadani, Desi Fidyah Saibun Sitorus Saptono Hadi, Saptono Sari, Ika Yekti Liana Soerja Koesnarpadi Subur P Pasaribu Teguh Wirawan, Teguh Wiranata, Muhammad Harjan