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Kalium Case Study

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Penetapan Kadar Natrium (Na) dan Kalium (K) dalam Sampel Makanan dan Minuman dengan Metode FES (Flame Emission Spectrometric) Tanesh Kumar Universitas Padjadjaran, Indonesia Email: taneshkumr91@gmail.com Abstrak: Dilakukan pengukuran kadar Natrium (Na) dan Kalium (K) dengan metode FES (Flame Emission Spectrometric) dalam sampel uji makanan ringan, minuman isotonis, dan minuman bersoda. Larutan baku standar NaCl dibuat sebanyak 10 mL. Larutan baku standar NaCl kemudian dimasukan ke dalam 5 tabung reaksi dengan konsentrasi larutan standar yang berbeda - beda . Sampel berupa larutan sampel langsung dimasukan ke dalam botol vial. Sampel yang berupa snack dilakukan preparasi sampel terlebih dahulu sebelum dianalisis. Instrumen dikalibrasi …show more content…

Standard stock solutions of NaCl 10 ml were prepared. Standard stock solutions of NaCl of different concentrations were then fed into 5 different vials. The solution sample was directly inserted into the sample vial bottle. Snack samples were pre-prepared prior to analysis. The instrument was calibrated in advance by using distilled water. Furthermore, each vial containing the standard solution and the sample were measured by using FES intensity on flame …show more content…

Sampel perencah mee goreng ini pertama digerus hingga membentuk serbuk dengan menggunakan mortir dan stamper, sampel selanjutnya ditimbang sebanyak 1 gram dengan mengunakan neraca analitik. Sampel yang telah ditimbang dimasukan ke dalam tabung sentrifugasi dan ditambahkan 4ml aquades. Sampel selanjutnya di sentrifugasi selama 10 menit dengan 3 rpm. Supernatan di pipeting dan dipisahkan dari minyak yang mengambang pada bagian atas supernatan. Supernatan kemudian dimasukan ke dalam tabung sentrifugasi baru dan ditambahkan aquades sebanyak 8 ml dan disentrifugasi kembali selama 10 menit pada 3 rpm. Supernatant kemudian dipipeting dan dimasukkan ke dalam botol vial. Botol vial diberi

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