azomspoke to Kevin Fernandes from Endress+Hauser about the significance of online Raman spectroscopy in industrial processes, as well as its potential role in emerging industries.
Please can you introduce yourself and your professional background within analytical chemistry, as well as your current role at Endress+Hauser?
我一直很喜欢在学校工作。我于1977年开始在泰晤士河水工作，担任水处理助理，然后与葛兰素史克（Glaxosmithkline）一起在药品研究中工作。在这段时间里，我还研究了普通国家科学证书的兼职，直到学位。亚博老虎机网登录
正是在这一点上，我以Varian色谱工具的销售工程师的身份进入了商业世界，并成为了一系列消耗品的产品专家，帮助客户使用方法开发协议。
在加入Endress+Hauser之前，我担任了一些业务发展角色，包括液体处理，超临界流体色谱，高通量合成化学以及将电化学应用于高性能液相色谱（HPLC）。
我目前在Endress+Hauser的角色涵盖了英国作为光谱仪器的流程分析销售工程师。这包括拉曼光谱和可调二极管吸收激光（TDLAS）仪器的销售和支持。
Endress+Hauser是世界领先的工业工程工程仪器和解决方案的提供商。工业化学过程的测量仪器如何至关重要？
It is vitally important, as analytical technologies are the window into the process. Online analysis as opposed to offline or remote facilitate rapid decisions and can contribute significantly to process efficiency, better utilization of plant assets, and ultimately, the bottom line.
Image Credit: Forance/Shutterstock.com
Could you please provide an overview of what Raman spectroscopy is as well as its various industrial applications?
Raman spectroscopy is a light scattering technique. Raman utilizes a high-intensity light source from a laser, usually supplied by a fiber optic cable to the sample of interest. Most of the scattered light will be at the same wavelength as the laser—this is known as Rayleigh scatter, and photons of this type will be filtered off.
但是，某些反向散射光将改变波长或颜色。这称为拉曼散射，这将代表我们要测量的内容。因此，拉曼光谱可以显示几个峰表明其强度和波长位置。拉曼光谱中的峰对应于分子振动。例如，这些可以是C-C，C = C，N-O。
Raman Spectra of a simple Gas Mixture
Raman spectroscopy allows online optical analysis to bridge the gap between lab and process. How is this possible and in what ways is this advantageous?
Lab to process is very much a mantra of Endress+Hauser. What this means is that analytical methods developed in the lab can be seamlessly integrated into the process and become an integral part of it rather than a remote or discrete one - the lab comes to the sample. To get this set up, the introduction of a Raman light source just needs a probe connected to the process in question—the probe itself can be changed to accommodate many different sample types, for example gases, liquids, slurries, and powders.
拉曼硬件很健壮，所有软件都集成了，因此对其他计算机没有任何要求。由于OPC和MODBUS协议输出，数据传输到最常用的控制系统很容易。当监视过程时，在线结果将连续且实时实时，这允许对过程进行更改，这意味着没有延迟等待结果从实验室回来的延迟。
To put this into context, applying Raman spectroscopy to advanced bioprocesses would generate a control saving of around £5,000 on a typical 6,000 litre vessel by not having to include offline analysis. Furthermore, the risk of compromising bioreactor sterility is also removed by not having to sample the vessel periodically and invasively. Chemometric models developed in the lab also allow for convenient method transfer and allow the scaling up of process levels.
You will be conducting a talk on Raman spectroscopy at the 2022 ChemUK conference in May. What can visitors expect from your presentation?
My talk will provide a quick overview of the Raman technique and technology, focusing on some of the applications that we have developed at Endress+Hauser and how these have been implemented into our markets such as the manufacturing of chemicals, oil and gas production, and bio/pharmaceutical production.
Click Here to Sign Up for ChemUK 2022
拉曼光谱在清洁能源和绿色化学等新兴行业中发挥什么作用，实施这种分析技术将有什么好处？
Nice question! Endress+Hauser Raman is already playing a part in monitoring the purity of green and blue hydrogen etc. from processes such as electrolysis and steam reformation of methane. Raman has also been integrated with other Endress+Hauser instrumentation to provide a complete solution for this very important application. In addition to this, Endress+Hauser TDLAS instrumentation is being used to measure compounds such as moisture and carbon dioxide in hydrogen streams and carbon capture projects.
What does the future of measurement instrumentation look like to you? Do you expect this technology to evolve much in the years to come?
The measurement aspect of the process will increasingly become more integrated, and although the instrumentation footprint in a plant will get smaller, it will become increasingly more information-rich.
在由于持续的19日大流行而停止了许多面对面会议之后，诸如Chemuk之类的会议对于在行业中发展和分享思想有多重要？
Online platforms like Teams and Zoom are still great for pulling people together, particularly at short notice. However, nothing in my opinion beats having face to face meetings to conduct business. To that end, conferences like ChemUK are invaluable to provide those platforms.
Further Information:
https://www.endress.com/en/endress-hauser-group/product-center-competencies/optical-analysis
www.uk.endress.com
www.rsc.org
Process Raman Spectroscopy Selected Application Notes
Chemical Process
- 监测聚合反应。
- In-line monitoring of ethylene vinyl acetate Copolymer with Raman spectroscopy
- Raman spectroscopy in the chemical industry.
Oil and Gas
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Process Raman Spectroscopy for custody transfer operations of ship to ship and ship to shore Liquefied Natural Gas (LNG) cargoes.
Life Science
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Advanced process and product control in fermentations. Raman spectroscopy for composition analysis in a lab or process
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用于生物处理应用的拉曼光谱法
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Raman spectroscopy simultaneously measures several parameters in-situ real-time monitoring bioprocess.
关于凯文·费尔南德斯
目前，我被英国的Endress+Hauser Ltd担任流程销售工程师，为我们的基于激光的光谱仪器提供销售支持，其中包括拉曼和可调二极管激光光谱仪器。
I’m very privileged to have a career in the field of natural sciences, from the lab bench to the commercial world where I now reside. Career highlights include the development and bringing to market of many new and innovative technologies in the analytical world. My old chemistry teacher told me: “you spend a long time working, so do something you are going to enjoy.”Wise words that still hold true today.
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