Abstract:
Membrane interface probe (MIP) is a high-resolution detector of organic pollutants. They have been widely used in real-time and
in-situ surveys of the pollution characteristics and spatial distributions of volatile organic compounds (VOCs) in soils and groundwaters at polluted sites. China currently has great demand for technologies and equipment capable of high-precision and rapid screening of soils at contaminated sites. However, the indigenous research and development in this field is still in its infancy. Based on the systematic analysis of application examples of MIP technology at organic pollution sites at home and abroad, this review analyzes the current research status and potential future developments in this field from the perspective of bibliometrics. The use of MIP was first reported in 1996 and the number of publications in this field has increased year by year. At present, the United States and China are the two countries with more research and use of MIP. Currently, the pollutants that MIP has been used for in-situ real-time detection include the benzene series, halogenated hydrocarbons, and petroleum hydrocarbons in contaminated sites. The development of MIP has gone through three stages, namely the research and development of VOC sensors, the in-situ analysis of VOCs in polluted soils and groundwater, and the application of combined probes. Coupling MIP technology with other multiple probes and research and development of associated equipment will become an important future direction in this field. Finally, based on the limitations of MIP in the detection of organic pollutants at contaminated sites and combined with the actual demands and key scientific issues of soil surveys in Chinese, future research and development directions are also proposed from the following four fields: (1) clarifying the interface mass transfer and diffusion mechanism of pollutants in soils; (2) designing high-performance semi-permeable membranes; (3) developing high-precision drilling and integrated detection equipment; and (4) establishing relevant standards and technical guidelines.