Reliable measurements of oil-in-water (OiW) content is essential in the oil and gas industry. The current OiW analysis techniques deployed in the industry need frequent calibration and mostly depend on optical access to the sample. They are also limited in providing a thorough compositional examination of the oil content. Nuclear magnetic resonance (NMR) is a well-established analytical tool across a wide range of different fields. For the OiW analysis, NMR can provide a self-calibrated measurement, does not require optical access, and allows for quantitative analysis of aromatic and aliphatic hydrocarbon content at the ppm level. Here, a fully automated prototype combining a custom-built solid-phase extraction (SPE) platform for sample pre-concentration and a benchtop NMR spectrometer for quantitative OiW measurements is designed, built, and demonstrated. The novel automated apparatus has significant potential for field deployment and provides a reliable and reproducible analysis of OiW content consistent with common reference methods.

中文翻译：

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固相萃取核磁共振（SPE-NMR）：原型设计，开发和自动化

可靠的水包油（OiW）含量测量在石油和天然气工业中至关重要。行业中当前使用的OiW分析技术需要频繁校准，并且主要取决于对样品的光学访问。它们还不能对油含量进行全面的成分检查。核磁共振（NMR）是在各种不同领域中公认的分析工具。对于OiW分析，NMR可以提供自校准的测量结果，不需要光学通道，并且可以定量分析ppm级的芳香族和脂肪族烃含量。在这里，设计，制造了一个全自动原型，该原型结合了用于样品预浓缩的定制固相萃取（SPE）平台和用于定量OiW测量的台式NMR光谱仪，并演示了。该新颖的自动化设备具有用于现场部署的巨大潜力，并提供了与常见参考方法一致的可靠且可重现的OiW内容分析。