GB/T 34099-2017 in English

Interpretation of GB/T 34099-2017 Standard

1. Standard background and scope of application

GB/T 34099-2017 "Determination of aluminum, silicon, vanadium, nickel, iron, sodium, calcium, zinc and phosphorus contents in residual fuel oil - Inductively coupled plasma optical emission spectrometry" is a detection method for multiple metal elements in residual fuel oil. 396.15 Si 10~250 251.61 Si 10~250 251.61 Mg 50~150 396.15 Mg 200~300 251.61 >V 1~400 292.40 Ni 1~100 231.60 Fe 2~60 259.94 Na 1~100 589.59 Ca 3~100 317.93 Zn 1~70 213.86 P 1~60 214.91

3. Experimental procedures and technical details

The standard specifies the following experimental procedures:

1. Sample preparation:Weigh 20~50g of residual fuel oil sample, mix and homogenize.
2. Ashing and dissolution:Heat the sample in a platinum crucible until carbonized, and then burn off the residual carbon in a muffle furnace. Use lithium tetraborate-lithium fluoride flux for ashing treatment and dissolve with tartaric acid-hydrochloric acid mixed solution.
3. Element determination: The prepared sample solution is detected by inductively coupled plasma optical emission spectrometer (ICP-OES), and the content of each element is determined by characteristic wavelength analysis.

4. Precision and accuracy

The standard provides detailed precision data (Tables 3 and 4), including repeatability and reproducibility indicators. For example:

• Al has a repeatability of 0.066x and a reproducibility of 0.337x.
• Si has a repeatability of 0.0643x and a reproducibility of 0.332x.

5. Implementation Suggestions

To ensure the accuracy of the experimental results, it is recommended that:

• Operate strictly in accordance with the instruments and reagents specified in the standards.
• Calibrate the instrument regularly, especially when transferring between different laboratories.
• Pay attention to the sulfur content control in sample pretreatment to avoid affecting the measurement results.
• Properly store the standard solution to ensure the accuracy of its concentration.