Overview
KN-14583 conforms to EN14538 Fat and oil derivatives - Fatty acid methyl ester (FAME) - Determination of Ca, K, Mg and Na content by optical emission spectral analysis with inductively coupled plasma (ICP OES).
Elemental composition of biodiesel is required for product quality-control, auto-engine life, emissions control, and researching appropriate additives. The use of microwave assisted acid digestion reaction system to prepare neat biodiesel (B100) samples in an aqueous medium for simultaneous inductively coupled plasma optical emission spectrometer (ICP-OES) analyses is reported. Biodiesel produced by transesterification reaction was subjected to the test method using calibration standards prepared in an aqueous medium. Significant correlation for the spiked B100 samples, instrument detection limits, accuracy, and precision data showed that elemental concentrations can easily be determined within the specified limits. The method avoids switching any of the ICP-OES accessories required for high organic loads. This method is most appropriately devised for biodiesel analysis than petrochemicals analysis..
Table 1, Main Technical Parameters of KN-14538
High Frequency Generator | |
Working Frequency | 27.12MHz |
Stability | ﹤0.05％ |
Output power | 800W ～1600W |
Stability | ≤0.05％ |
Matching method | Automatic |
Scanning spectrometer | |
Light path | Czerny turner |
Focal length | 1000mm |
Raster specification | Ion-etched holographic grating, engraved line density 3600L/mm or 2400L/mm; scribed area (80×110)mm |
Line dispersion reciprocal | 0.26nm/m |
Resolution | ≤0.008nm(3600 wire grating） |
≤0.015nm(2400 wire grating) | |
Main host parameters | |
Scanning wavelength range | 195nm～500nm（3600L/mm wire grating） |
195nm～800nm（2400L/mm wire grating） | |
Repeatability | RSD≤1.5％ |
Stability | RSD≤2.0％ |
Typical element spectrum and curve:
