| 摘要 |
PROBLEM TO BE SOLVED: To provide a cleaning agent for effectively cleaning the organic chlorine compound at a site where soil, ground water and bottom deposit, in particular, hardly water-permeable soil exist at an original position, and to provide a cleaning method for an organic chlorine compound using this. SOLUTION: The cleaning agent containing an oil-in-water type emulsion formed by mixing any one or more of a sunflower oil, a safflower oil and a rice-bran oil and a surfactant selected from any one or more of a group including a stearoyl lactate and a sucrose fatty acid ester with water. According to this, since the oil-in-water type emulsion has a size of several microns and a fine size and has an excellent movability in the soil, it is diffused to a range of an object to be cleaned by flowing of ground water and concentration gradient by pouring it to ground water to exhibit an effect and can exhibit an effect from some pouring wells to a wide range. It is not required that a large number of pouring wells are installed for cleaning at an original position, and a reduction in installation cost and in operation cost for pouring becomes possible. COPYRIGHT: (C)2008,JPO&INPIT
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