Analisis Kadar Abu Cara Basah Dan Cara Kering
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Transcript of Analisis Kadar Abu Cara Basah Dan Cara Kering
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Analisis Kadar Abu Cara basah dan Cara Kering Pada Kalsium
Oleh :Asri Nisa Sakinah (113020056)
Tanty Sulistiani Widodo (113020116)Nur Rahayu Setiawati (113020117)
Annisa Dwi Utami (113020119)Kintan Pradita Putri (113020120)
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Penentuan kadar abu secara langsung (cara kering)
Penentuan kadar abu adalah dengan mengoksidasikan semua zat organik pada suhu tinggi, yaitu sekitar 500-600 ◦ C dan kemudian melakukan penimbangan zat yang tertinggal setelah proses pembakaran tersebut.
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Analisis kadar abu cara basah
Pengabuan cara basah digunakan untuk digestisampel dalam usaha penentuan trace elemendan logam-logam beracun. Pengabuan cara basah prinsipnya adalahmemberikan reagent kimia tertentu ke dalambahan sebelum dilakukan pengabuan.
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Bahan yang sering digunakan untuk pengabuan basah
1. Asam sulfat untuk membantu mempercepat terjadinya reaksi oksidasi.
2. Campuran asam sulfat dan potasium sulfat dapat digunakan untuk mempercepat dekomposisi sampel.
3. Campuran asam sulfat, asam nitrat untuk mempercepat proses pengabuan.
4. Asam perkhlorat dan asam nitrat untuk bahan yang sangat sulit mengalami oksidasi.
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Keuntungan pengabuan cara basah
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Kerugian pengabuan cara basah
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Mineral dalam bahan pangan
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