Analytical Instrumentation MESA 6000, Typical Results for S and Cl Analysis
The new MESA-6000 by HORIBA Scientific is able to perform high sensitivity analysis of both Sulphur and Chlorine on the same instrument. Only one sample needs to be prepared, and it will be measured using the selected calibration curve. The customer is able to create and store as many calibration curves as he wants. Figure 1 shows a calibration curve made for Sulphur up to 500 ppm. On Table 1, some typical results obtained with this calibration curve are reported. To evaluate the standard deviation, 10 replicates have been done on each sample. With exactly the same simple operations, it is possible to build calibration curves for Chlorine. Some waste waters samples results are presented in Table 2. The standard deviations are excellent at all levels including very high concentration.
S Concentration
1 2 3 4 5 6 7 8 9
10
Ave Std.
0 ppm -0.7 0.1 0.7 0.5
-0.1 -0.2 -1.5 0.0
-1.3 -0.1
-0.26 0.71
Table 1: S Concentration Reader Reply Card No 61
Sulphur Analyser in all Fuels and Oil, compliant with ASTM D-4294
With more than 30 years history in sulphur analysis with X-ray technology, HORIBA has been enjoying good reputation among users, thanks to high quality of products, either in Europe, or in the USA where Horiba dominates the market. Most of major oil refinery companies, testing companies and laboratories are using our SLFA analysers. After releasing SLFA- 1100H/1800H in 1994, best selling instruments for US diesel regulation, Horiba regularly introduced some new models. First the SLFA-20 which is still today probably the most famous S-in– Oil analyser. Its very compact size and light weight leads to the ideal model for ‘everywhere’ analysis.
When lower limit of detection are required, the latest EDX SLFA-2100/2800 will be preferred. The second version is equipped with an 8 position auto- sampler. It is based on the same principle for sulphur analysis using EDX method, as describe on ASTM D-4294.
With these analysers, the typical detection limit is 5 ppm. While a good detection limit is very useful, the crucial problem with energy dispersive X-Ray fluorescence is the matrix effect. Major developments for the new instrument are automatic matrix corrections with sophisticated algorithms and innovative spectrum analysis. Thanks to these new and unique features, the SLFA 2000 series automatically makes matrix corrections for a wide range of sample C/H ratio (from 7 to 9).
Ultra low detection limits and matrix correction enable these analysers to be an essential tool for all type of products: From 0 - 10% S in sour crude to sweet crude to straight run gasoline to reformulated gasoline, etc. For more information on sulphur analyser, visit
www.horiba.com/scientific/sulfur
Reader Reply Card No 62 Reader Reply Card No 63 Annual Buyers’ Guide 2011
1 ppm 10 ppm 100 ppm 1.7 1.4 0.9 1.9 1.4 0.7 0.7 2.2 1.1 0.7 1.3
9.8 9.8
10.5 8.8 9.9
10.8 9.4
0.54
10.9 10.6 10.9 10.1 0.71
99.1 99.5
101.4 100.6 100.5 99.7
101.1 100.1 100.9 100.9 100.4 0.75
Calibration: Cl in Water Measurements time: 200 S Repeats: 3
Sample Name 1 2 3
Average SD
Figure 1: Calibration Curve. Typical calibration line based on calibration standards prepared with ultra high purity mineral oil (0, 10, 25, 50; 100, 250, 500 mg/kg)
Expected Conc
Cal 0.04 401.4 399.5 398.0
Cal 0.27 2692.4 2697.0 2682.8
4.6 m5
105.6 104.8 105.6
0.6 m6
206.2 205.2 202.9
399.7 ppm 2690.7 ppm 105 ppm 204.8 ppm 1.0
104 400 ppm 2700ppm Unknown Unknown Table 2: Determination of Cl using a water calibration
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