Skripsi

VERIFIKASI METODE UJI ANALISIS ULTIMAT BATU BARA MENGGUNAKAN ASTM D5373-21

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Penilaian

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This study was conducted to determine the precision and accuracy of the verification of the coal ultimate analysis test method. Coal samples that are still in the form of lumps are ground in stages using a jaw crusher to a size of 10 mm, a hammer mill to a size of 2.8 mm and a cross beater mill to a size of ±0.212 mm, then a fine coal powder is obtained that is ready to be tested. The method used is ASTM D5373-21 and the tool used is CHN Analyzer. Precision is determined by calculating the repeatability value and accuracy by calculating the bias value and percentage of bias from CRM (Certified Reference Material) testing using LECO CRM 502-680. The results of the study showed that the precision of the test method for the Standard Deviation (SD) values obtained were 0.17%; 0.02%; 0.01%, the experimental Coefficient of Variation (CV) values were obtained respectively at 0.24%; 0.46%; 1.67%, the Horwitz Coefficient of Variation (CV) values obtained were respectively 2.11%; 3.05%; 4%, and the 2/3 Horwitz Coefficient of Variation (CV) values obtained were respectively 1.41%; 2.04%; 2.68%. The results of the analysis of the determination of accuracy for the bias value were respectively 0.01%; 0.09% and 0.08% and the percentage bias values were respectively -0.02%; 2.25% and 6.68%. Based on this study, the verification of the coal ultimate analysis test method using ASTM D5373-21 was proven presicion and acurate.

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Availability

Inventory Code	Barcode	Call Number	Location	Status
2507001690	T169239	T1692392025	Central Library (Reference)	Available but not for loan - Not for Loan

Detail Information

Series Title

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Call Number

T1692392025

Publisher

Indralaya : Prodi Ilmu Kimia, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya., 2025

Collation

xvi, 63 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

547.807

Content Type

Text

Media Type

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Carrier Type

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Edition

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Subject(s)

Ultimat Batu Bara

Specific Detail Info

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Statement of Responsibility

MI

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