Claim Missing Document
Check
Articles

Found 2 Documents
Search

Analisis Kandungan Logam Dan Ftalat pada Komponen Eletronik menggunakan XRF dan Py/GC-MS Lestari, Ayu Zakiyah; Maulida, Nabilah
Jurnal Riset Sains dan Kimia Terapan Vol. 10 No. 1 (2024): Jurnal Riset Sains dan Kimia Terapan, Volume 10 Nomor 1, Juni 2024
Publisher : Program Studi Kimia Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JRSKT.101.02

Abstract

Abstrak Perkembangan elektronik pada bidang industri mempengaruhi kehidupan sehari hari. Penggunaannnya yang berlebihan dapat meningkatkan resiko berbahaya pada penggunanya. Salah satu faktor bahaya pada komponen elektronik yang digunakan adalah terdapatnya logam dan flatat. RoHS merupakan regulasi Uni Eropa yang mengatur pembatasan penggunaan zat-zat berbahaya seperti Pb, Hg, Cd, dan Cr6+, serta PBB, PBDE, DIBP, DBP, BBP, dan DEHP dalam produk-produk elektronik dan listrik. Penelitian ini bertujuan untuk mengetahui kandungan zat-zat berbahaya yang diatur oleh RoHS pada sampel komponen elektronik. Metode yang digunakan adalah skrining awal menggunakan XRF dan penetapan kadar ftalat dengan Py/GC-MS. Hasil penelitian menunjukkan bahwa sampel tidak mengandung logam berat (Cd, Hg, Cr), DIBP, BBP, dan turunan Br. Kandungan Pb, DBP, dan DEHP yang terdeteksi memiliki konsentrasi rendah dan tidak melebihi batas maksimum penggunaan ftalat yang ditetapkan oleh RoHS, sehingga part elektronik tersebut dapat digunakan dalam produksi. Kata kunci: elektronik, ftalat, logam, Py-GC-MS, RoHS, XRF Abstract The development of electronics in the industrial sector affects daily life. Its excessive use can increase the risk of harm to its users. One of the hazardous factors in the electronic components used is the presence of metals and flattates. RoHS is a European Union regulation that regulates restrictions on the use of hazardous substances such as Pb, Hg, Cd, and Cr6+, as well as PBB, PBDE, DIBP, DBP, BBP, and DEHP in electronic and electrical products. This study aims to determine the content of RoHS-regulated hazardous substances in electronic component samples. The methods used were preliminary screening using XRF and determination of phthalate levels by Py/GC-MS. The results showed that the samples did not contain heavy metals (Cd, Hg, Cr), DIBP, BBP, and Br derivatives. The detected Pb, DBP, and DEHP contents had low concentrations and did not exceed the maximum limit of phthalate use set by RoHS, so the electronic parts could be used in production. Keywords:electronics, metals, phthalates, Py-GC-MS, RoHS, XRF
Sintesis Surfaktan Natrium Lignosulfonat (C20H24Na2O10S2) Berbahan Dasar Serbuk Kayu Mahoni Menggunakan Proses Sulfonasi. Maulida, Nabilah; Aisah; Perwitasari, Dyah Suci; Siswati, Nana Dyah; Sani
Jurnal Fisika Unand Vol 14 No 4 (2025)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.14.4.421-427.2025

Abstract

Furniture production made from mahogany wood produces sawdust that contains biomass such as cellulose, hemicellulose, and lignin. The lignin content in mahogany wood can be used as raw material for making sodium lignosulfonate surfactants. Delignification of lignin is carried out alkaline and continued with lignin isolation by acid precipitation. Pure lignin isolate is further used as a raw material for making sodium lignosulfonate surfactants using the sulfonation process. The sulfonation process is carried out by mixing lignin isolate and sodium bisulfite solution using excess NaHSO3 variation and sulfonation time. Both variables are run by adding sodium hydroxide as a catalyst and the pH condition was maintained at pH 4. The sodium lignosulfonate surfactant solution formed was then characterized using FT-IR spectrophotometer and UV-Vis spectrophotometer. The best condition was obtained at a sulfonation time of 150 minutes and NaHSO3 exceeded 75%, namely with a surfactant concentration of   4100,784 mg/L.