Physical Address
304 North Cardinal St.
Dorchester Center, MA 02124
D5184-22 – Standard Test Method Technical Guide
The ASTM D5184-22 standard provides test methods for determining aluminum and silicon in fuel oils. These methods involve ashing, fusion, and analysis via inductively coupled plasma atomic emission spectrometry (ICP-AES) or flame atomic absorption spectrometry (FAAS). The standard applies to concentrations between 5 mg/kg and 150 mg/kg for aluminum and 10 mg/kg and 250 mg/kg for silicon.
📐 Test Methods Overview
This standard includes two test methods: Test Method A using ICP-AES and Test Method B using FAAS. Both methods require careful sample preparation through ashing and fusion. The standard references terminology from D4175 and emphasizes quality control per D6792 and statistical assurance per D6299.
| 📐 Method | ⚡ Instrumentation | 🎯 Target Elements |
|---|---|---|
| Test Method A | ICP-AES | Aluminum, Silicon |
| Test Method B | FAAS | Aluminum, Silicon |
⚙️ Test Procedure and Safety
The analytical process includes ashing the fuel oil sample to remove organic material, followed by fusion to dissolve the residues. The resulting solution is analyzed using ICP-AES or FAAS. Specific safety warnings are provided in sections 7.6, 10.1, and 11.5 of the standard. Optimization per D7260 for ICP-AES and D7740 for AAS is required.
⚠️ Warning: Always adhere to the safety guidelines in the standard. Handle samples and reagents with care and use appropriate personal protective equipment.
📊 Concentration Ranges and Calibration
Calibration is defined as the process for determining the relationship between signal intensity and elemental concentration. The standard specifies concentration ranges for aluminum (5–150 mg/kg) and silicon (10–250 mg/kg). Statistical quality assurance and control charting per D6299 are recommended.
| 🟦 Element | 📏 Concentration Range (mg/kg) |
|---|---|
| Aluminum | 5 – 150 |
| Silicon | 10 – 250 |
💡 Technical Note: Prepare calibration standards accurately and validate the instrument before analysis. Refer to practices D7260 and D7740 for detailed guidance.
❓ Frequently Asked Questions
🔍 What is the scope of ASTM D5184-22?
The standard covers determination of aluminum and silicon in fuel oils at concentrations of 5–150 mg/kg for aluminum and 10–250 mg/kg for silicon using ashing, fusion, and either ICP-AES or FAAS.
💡 How are samples prepared in these test methods?
Samples are ashed to remove organic content, then fused to dissolve inorganic residues, ensuring aluminum and silicon are available for analysis.
⚡ Which instruments are used for analysis?
Test Method A uses ICP-AES, and Test Method B uses FAAS. Both instruments must be optimized and calibrated per the standard’s referenced practices.
📌 What quality control practices are recommended?
The standard recommends D6299 for statistical quality assurance and D6792 for quality management systems. Regular calibration and control charting are essential.