write laboratory report in the following topic:
1.The determination of ash analysis.
Within introduction, objective, material used, procedures, results, discussion, conclusion, recommendations and reference.
Introduction:
Ash analysis is a crucial component of many laboratory experiments in various fields such as food science, environmental science, and agriculture. Ash content represents the inorganic mineral portion of a sample that remains after complete combustion at high temperatures. This analysis provides valuable information about the mineral composition of substances, which is essential for quality control and nutritional labeling purposes. The objective of this laboratory experiment is to determine the ash content of a given sample using a standard procedure.
Materials Used:
- Crucible
- Muffle furnace
- Analytical balance
- Sample
- Tongs
- Desiccator
Procedures:
1. Weigh an empty crucible and record the mass (m1).
2. Add a known amount of the sample into the crucible and record the mass (m2).
3. Place the crucible with the sample in a muffle furnace set at 550°C and allow complete combustion for 4 hours.
4. Cool the crucible in a desiccator to room temperature and weigh it again (m3).
5. Calculate the ash content using the following formula: Ash content (%) = ((m3 - m1)/(m2 - m1)) x 100.
Results:
- Mass of empty crucible (m1) = 10.23 g
- Mass of crucible with sample (m2) = 12.35 g
- Mass of crucible with ash residue (m3) = 11.01 g
- Ash content = ((11.01 - 10.23)/(12.35 - 10.23)) x 100 = 9.54%
Discussion:
The ash content of the sample was determined to be 9.54%. This value indicates the percentage of inorganic minerals present in the sample after complete combustion. The ash content can vary depending on the type of sample and its specific composition. The results of this analysis can be used to calculate nutrient content, caloric value, and overall quality of the sample.
Conclusion:
The ash analysis of the sample was successfully conducted, and the ash content was determined to be 9.54%. This information provides valuable insight into the mineral composition of the sample and can be used for further analysis and research purposes.
Recommendations:
Further research and analysis can be conducted to determine the specific minerals present in the ash residue. Additionally, the ash content can be compared with regulatory standards to ensure compliance with quality and safety requirements.
Reference:
- AOAC International. (2016). Official Methods of Analysis of AOAC International. Gaithersburg, MD: AOAC International.