ICP的进样系统(SIS)会影响到ICP包括检测限、精度、RSD以及成本的多个性能参数。考虑到分析的样品类型,ICP的性能通常可以通过选择合适的炬管、雾化器和雾室来提高。对于含有微量氢氟酸(HF)的样品,选择玻璃或石英样进样系统明显是不合适的。在这篇文章中,我们介绍了来自GE公司的耐氢氟酸高性能样品导入系统(HP-SIS)的优越性能,并在Thermo Fisher Scientific PRO Duo ICP-OES上与其标配的耐氢氟酸SIS的性能做了比较。
The experiment demonstrates the advantage of full spectrum access with a high resolution spectrometer in the development of a quantitative method. The resolution on the JY ULTIMA 2 is sufficient that line selection was made with no interelement correction necessay.
The experiment demonstrates the advantage of full spectrum access with a high resolution spectrometer in the development of a quantitative method. The resolution on the JY ULTIMA 2 is sufficient that line selection was made with no interelement correction necessay.
The torch configuration (vertical torch, radial observation, sheath gas) allows easy analysis of the incineration solvents mixture. There is no requirement for dilution, cooled spray chamber or additional gases. The optimization was done on the plasma conditions and the sample uptake. The plasma and acquisition parameters are fixed in the analytical method and automatically controlled by computer for an optimum reproducibility from one operator to the other.
The torch configuration (vertical torch, radial observation, sheath gas) allows easy analysis of the incineration solvents mixture. There is no requirement for dilution, cooled spray chamber or additional gases. The optimization was done on the plasma conditions and the sample uptake. The plasma and acquisition parameters are fixed in the analytical method and automatically controlled by computer for an optimum reproducibility from one operator to the other.
Because the aim of the analysis lubricating oils is to monitor the oil of an engine and get a trend analysis over time, the best accuracy is not required. The trend analysis allows the analyst to see that the oil is changing and when the engine needs stripping down before a catastrophic failure. The use of the internal standard is not required because the results are only compared to previous results. The procedure is thus very simple: new two point calibration each time the sample is analyzed and dilution of the samples by 1:5, 1:10 or 1:100, depending on the viscosity of the oil samples and whether lower detection limits are required.