【求助】ICP分析石脑油中砷

具体一下，我初次听说石脑油。能不能再介绍详细点。

石脑油是石化乙烯装置的主原料.

Analysis of Naphtha
Introduction
Naphtha is commonly used as a fuel in gas turbines. The presence of certain elements, such as
Ca, Pb, V and the alkali elements, can cause the formation of hard deposits which significantly
shorten the lifetime of the turbines. The detection limit capability of an axial plasma is an excellent
match for the requirements of this analysis.
Elements
Ag, Al, As, B, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Mo, Na, Ni, Na, Ni, P, Pb, Se, Si, Sn, Ti, V, Zn
Instrumentation
Leeman Labs Prodigy High Dispersion ICP
• State-of-The-Art, Large Format, Programmable
Array Detector (L-PAD)
• Long Focal Length Optical System
• Temperature Controlled Optical System
• Image-Stabilized ICP Source
• Computer Controlled Source Mirror
• Operator Selectable Input Slit
• Axial, Radial or Dual View

Conclusion
The Teledyne Leeman Labs Prodigy ICP is able to provide direct analysis of highly volatile organic
solvents, such as naphtha. Because of the robust plasma generated by the free-running 40.68 MHz
generator, no dilution of the solvent is necessary. As a result, excellent detection limits are achieved,
minimal sample preparation is required and sample throughput is maximized.

石脑油做为乙烯装置的原料,如果其中砷含量过高,会对下游装置的催化剂造成中毒.一般要求石脑油中的砷含量不大于20ppb wt.因为没有方便的检测方法来检测这么低的含量,想用ICP,那位在石化行来的朋友做过这方面的工作,可提些意见.

不知道你用那家的ICP，我只知道Varian ICP-OES可以做石脑油中的金属元素，配个加氧附件可以直接进样测试的。

应用ICP_MS技术快速直接检测石脑油中的Pb_Hg_As.pdf
有一篇ICP-MS的方法.前处理可以参考下.

请做过的朋友说一下,用ICP测如此低的砷是否有问题?我这里有一篇国外关于石脑油应用报告,时间比较早了.我看了一下,可惜没有砷.但我想测量应该没问题,但关键是能否测量这样低的含量?楼主如果需要告诉我邮箱.

非常感谢chemistryren.

请问:有人用IPC-AES做过这方面的工作吗?

考虑到ICP-MS的价格及操作成本,在石化企业还比较少,是否有朋友用ICP-AES做过这些样品?