Pre Konsentrasi Logam Cd Dalam Air Menggunakan Resin Dowex 50WX2 Untuk Pengujian Secara SSA-NYALA: Pengaruh Berat Resin Dan Konsentrasi Eluen

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Published Aug 29, 2022

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Yuniar Yuniar
Universitas Sriwijaya
Lusi Suwartini
Universitas Sriwijaya
Annisah Annisah
Universitas Sriwijaya

Abstract

Pengujian logam Cd dalam air dalam konsentrasi yang sangat kecil sangat sulit dilakukan secara langsung mengingat keterbatasan pembacaan peralatan. Untuk itu perlu dilakukan suatu teknik preparasi untuk meningkatkan nilai absorbansi sehingga nilai absorbansi mampu dibaca oleh alat. Pada penelitian ini dtelah dilakukan penelitian teknik ekstraksi fase padat secara kolom untuk pre-konsentrasi Cd dalam sampel air dengan resin DOWEX 50WX2 sebagai adsorben. Hasil prekonsentrasi kemudian dianalisis secara spektrofotometri serapan atom-nyala. Ekstraksi fase padat dilakukan pada pH larutan 5, laju alir 1 ml per menit, volume larutan yang dialirkan ke kolom sebanyak  50 ml dan analit logam Cd yang teradsorpsi pada resin dilepaskan kembali menggunakan  eluen HNO3 10 ml (faktor pengayaan 5 kali). Parameter yang dipelajari pada penelitian ini adalah pengaruh berat resin Dowex 50WX2 dan konsentrasi eluen HNO3 terhadap hasil ekstraksi logam Cd.  Hasil optimasi diperoleh berat resin optimum 0,5 gram dan konsentrasi eluen asam nitrat 1 mol/L. Validasi metode dilakukan menggunakan Certificate Reference Material,CRM untuk air bersih pada kondisi optimum. Hasil validasi memberikan hasil yang akurat dan presisi dengan perolehan nilai akurasi sebagai % rekoveri sebesar 97% dan presisi sebagai % RSD sebesar 8% (n=10). Metode ini juga telah berhasil diaplikasikan untuk menentukan logam Cd terhadap sampel lingkungan yaitu pada air sungai.

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How to Cite
Yuniar, Y., Suwartini, L., & Annisah, A. (2022). Pre Konsentrasi Logam Cd Dalam Air Menggunakan Resin Dowex 50WX2 Untuk Pengujian Secara SSA-NYALA: Pengaruh Berat Resin Dan Konsentrasi Eluen. Jurnal Temapela, 4(2), 51-55. Retrieved from http://temapela.labdasar.unand.ac.id/index.php/temapela/article/view/126
Issue
Vol 4 No 2 (2021): Jurnal Teknologi Dan Manajemen Pengelolaan Laboratorium (Temapela)
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Articles
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