Lesson 3 Overview of Assaying Flashcards
Assay Methods can be grouped into 3
- Wet Analysis Methods
- Fire Assay Methods
- Instrumentation Analysis
also known as wet chemical analysis or classical analysis, is a branch of analytical chemistry that uses classical methods, often involving reactions in liquid solutions, to analyze substances.
Wet Chemistry
Key Techniques and Practices of Wet Analysis
Dissolution and Extraction
Separation Technique
Separation Methods
Filtration
Precipitation
Distillation
Solvent Extraction
2 types of Analysis
Quantitative
Qualitative
Identifies the elements present in the sample. While classical wet chemistry tests for qualitative analysis are less common today, they might still be used in some situations
Qualitative Analysis
Determines the amount of each element present. Key wet chemistry techniques used for quantitative analysis include
Quantitative Analysis
Techniques in Quantitative Analysis
3
Gravimetry
titrimetry
Colorimetry
Application in Wet Analysis
Ore analysis
Alloy analysis
Metal purity determination
Analysis of Metallurgical Products and By-products
Failure analysis
Advantages in Wet Analysis
Accuracy and precision
Cost-effectiveness
Versality
Well-established methods
Challenges in Wet Analysis
Sample preparation
Interferences
Waste generation
Time-consuming
a metallurgical technique that uses high temperature to extract and analyze precious metals from a sample
Fire Assaying
Application in Fire Assaying
Mineral Exploration & Mining:
Metallurgical Processing & Refining
Precious Metal Recycling
Advantages in Fire Assaying
High Accuracy and Precision:
Applicable to Wide Range of Samples
Well-Established and Standardized:
Effective for Low-Grade Ores
Challenges in Fire Assaying
Time-Consuming
High Temperature & Hazardous Chemicals:
Not Suitable for All Metals
refer to analytical techniques that utilize specialized instruments to measure the physical or chemical properties of a substance.
Instrumentation Analysis
Application of Instrumentation Analysis
Quantification
Spectrophotometry
Chromatography
Electrochemistry
Mass Spectrometry
Application of Instrumentation Analysis
Qualification
Spectroscopy
X- Ray Diffraction
Advantages of Instrumentation Analysis
High Sensitivity
High Precision and Accuracy
Speed and Efficiency
Automation
Multi Component Analysis
Disadvantages of Instrumentation Analsysis
HIGH COST of Instrumentation
Specialized training and expertise
Sample Preparation
Matrix Effect
Maintenance and Calibration
