石油/润滑油中的硫和金属测试应用报告---指南针X荧光光谱仪Compass-4294
引言
Compass4294-是一款高性能台式能量色散X射线荧光光谱仪,能够很好的分析石油中的硫和重金属含量(ppm级到百分比)。 ASTM4294描述了通过CompassRF测量油中硫的方法。本应用指南根据ASTM4294-演示了使用Compass4294的方法,硫含量通常为17ppm至5%。还证明了金属在润滑剂中的测试性能可以证明Compass4294符合此应用的要求。
Compass-4294还广泛用于分析润滑剂中的金属,符合以下标准:
> ASTMD7751 / ASTM D6481 ---
润滑油中添加元素(Mg,P,S,Cl,Ca,Zn,Mo)的测定
> ASTM D5059 ---
汽油中的铅(PB)
0.010至5.0 g铅/美制加仑
0.012至6.0 g铅/英国加仑
0.0026至1.32 g铅/升
测试性能
> 50 ppm硫标准物的测试性能
| Unit: | ppm | Test Time: 100 seconds |
Test Number | Calibration | Sulfur (ppm) |
|
1 | Low Sulfur | 51.64 |
|
2 | Low Sulfur | 52.26 |
|
3 | Low Sulfur | 48.96 |
|
4 | Low Sulfur | 51.75 |
|
5 | Low Sulfur | 50.29 |
|
6 | Low Sulfur | 45.20 |
|
7 | Low Sulfur | 49.99 |
|
8 | Low Sulfur | 52.28 |
|
9 | Low Sulfur | 52.99 |
|
10 | Low Sulfur | 51.64 |
|
11 | Low Sulfur | 50.44 |
|
12 | Low Sulfur | 50.67 |
|
13 | Low Sulfur | 53.48 |
|
14 | Low Sulfur | 53.34 |
|
15 | Low Sulfur | 54.95 |
|
16 | Low Sulfur | 52.55 |
|
17 | Low Sulfur | 53.65 |
|
18 | Low Sulfur | 51.94 |
|
19 | Low Sulfur | 53.00 |
|
20 | Low Sulfur | 51.45 |
|
Average test results of 20 times analysis (ppm) | 51.62 |
|
Real Value (ppm) | 50.00 |
|
0.1%和1%硫标准的测试性能
Unit: | % | Test Time: 100 seconds |
No. | Calibration | Sulfur 0.1% | Sulfur 1% |
1 | FUEL | 0.106 | 1.071 |
2 | FUEL | 0.106 | 1.083 |
3 | FUEL | 0.108 | 1.078 |
4 | FUEL | 0.106 | 1.074 |
5 | FUEL | 0.104 | 1.061 |
Certified Value | 0.100 | 1.000 |
Average | 0.106 | 1.073 |
Standard Deviation Sn | 0.001 | 0.008 |
Error ppm | 0.006 | 0.073 |
RSD | 1.33% | 0.77% |
300 ppm金属含量标准在润滑剂中的测试性能
Unit: | PPM | Test Time: 60 seconds |
No. | Calibration | Ca | Ti | V | Cr | Mn | Fe | Ni |
1 | Lubricant | 318 | 304 | 300 | 307 | 308 | 309 | 308 |
2 | Lubricant | 278 | 305 | 294 | 299 | 305 | 303 | 298 |
3 | Lubricant | 323 | 302 | 300 | 313 | 303 | 306 | 303 |
4 | Lubricant | 279 | 309 | 300 | 304 | 305 | 305 | 299 |
5 | Lubricant | 318 | 310 | 300 | 304 | 306 | 305 | 306 |
Certified Value | 300 | 300 | 300 | 300 | 300 | 300 | 300 |
Average | 303.2 | 306 | 298.8 | 305.4 | 305.4 | 305.6 | 302.8 |
Standard Deviation Sn | 22.643 | 3.3912 | 2.6833 | 5.1284 | 1.8166 | 2.1909 | 4.3243 |
Error ppm | 3.2 | 6 | -1.2 | 5.4 | 5.4 | 5.6 | 2.8 |
RSD | 7.47% | 1.11% | 0.90% | 1.68% | 0.59% | 0.72% | 1.43% |
|
No. | Calibration | Cu | Zn | Mo | Ag | Cd | Pb |
|
1 | Lubricant | 299 | 300 | 315 | 307 | 295 | 297 |
|
2 | Lubricant | 300 | 304 | 306 | 305 | 299 | 297 |
|
3 | Lubricant | 305 | 307 | 308 | 306 | 311 | 297 |
|
4 | Lubricant | 299 | 303 | 306 | 306 | 328 | 298 |
|
5 | Lubricant | 304 | 304 | 305 | 324 | 313 | 294 |
|
Certified Value | 300 | 300 | 300 | 300 | 300 | 300 |
|
Average | 301.4 | 303.6 | 308 | 309.6 | 309.2 | 296.6 |
|
Standard Deviation Sn | 2.881 | 2.51 | 4.062 | 8.0808 | 13.008 | 1.5166 |
|
Error ppm | 1.4 | 3.6 | 8 | 9.6 | 9.2 | -3.4 |
|
RSD | 0.96% | 0.83% | 1.32% | 2.61% | 4.21% | 0.51% |
|
校准。
使用一系列可商购的石油标准液来校准CompassRF光谱仪。
需要特殊的样品杯来采集标准品和样品以进行测量
测试谱图如下
润滑油中金属元素标定曲线如下
结论
根据上面获得的测试结果,证明Compass4294能够测量符合ASTM D4294,ISO 8754,ISO 20847,
IP336。Compass4294还被证明可以高精度和高精度地分析石油和类似基质样品中的其他元素。