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      Pemanfaatan Paladium sebagai Matrix Modifier untuk Pengembangan Metode Analisis Kadmium pada Ikan Menggunakan Graphite Furnace AAS

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      Date
      2024
      Author
      Khuriyati, Mufidah Hasna
      Purwaningsih, Henny
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      Abstract
      Pengujian logam berat dalam daging ikan tidak hanya bergantung pada prosedur yang telah ada, tetapi juga dapat dilakukan modifikasi untuk pengembangan metode. Paladium sangat efektif karena memiliki titik didih yang tinggi, sehingga analit dapat distabilkan pada suhu tinggi. Validasi metode perlu dilakukan untuk membuktikan apakah metode yang digunakan spesifik, akurat, dan dapat dipercaya. Tujuan dari penelitian ini adalah untuk mengetahui hasil validasi metode analisis kadmium pada ikan yang meliputi linearitas, presisi, akurasi, LoD dan LoQ serta menentukan nilai estimasi ketidakpastian. Sampel ikan didestruksi dengan 5 mL HNO3 dan 1 mL H2O2 menggunakan program microwave digestion dan diukur dengan Graphite Furnace Atomic Absorption Spectrophotometri (GFAAS) pada panjang gelombang 228,8 nm. Nilai koefisien determinasi yang diperoleh (R²) = 0,99 dengan % RSD < 15%, dan nilai akurasi berada pada rentang 80?110%. Nilai LoD 0,017 mg/kg dan nilai LoQ 0,028 mg/kg. Nilai estimasi ketidakpastian dalam metode analisis logam kadmium, yaitu 0,106±0,071 µg/g.
       
      Testing for heavy metals in fish meat does not only depend on existing procedures, but can also be modified to develop methods. Palladium is very effective because it has a high boiling point, so analytes can be stabilized at high temperatures. Method validation needs to be carried out to prove whether the method used is specific, accurate and reliable. The aim of this research was to determine the results of the validation of the cadmium analysis method in fish which includes linearity, precision, accuracy, LoD and LoQ and determine the estimated uncertainty value. Fish samples were digested with 5 mL HNO3 and 1 mL H2O2 using a microwave digestion program and measured using Graphite Furnace Atomic Absorption Spectrophotometry (GF-AAS) at a wavelength of 228.8 nm. The coefficient of determination value obtained (R²) = 0.99 with % RSD < 15%, and the accuracy value was in the range of 80?110%. The LoD value was 0.017 mg/kg and the LoQ value was 0.028 mg/kg. The estimated uncertainty value in the cadmium metal analysis method is 0.106 ± 0.071 µg/g.
       
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      http://repository.ipb.ac.id/handle/123456789/157748
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