以索氏萃取及超音波萃取土壤中的萘與菲：土壤含水份與 pH 的效應

Abstract

Abstract The main purpose of this research was to study soil polluted by naphthalene and phenanthrene, using traditional Soxhlet extraction and ultrasonic extraction to compare the recoverable efficiency with the following cases. (1) Using different soil moisture content, in order to compare the extraction efficiency. (2) Choose two kinds of soil in Taiwan, and use different extraction processes to discuss the influence by chosen soil. (3) Adjust with anhydrous potassium hydrogen phosphate and anhydrous disodium hydrogen phosphate to different pH of soil, to discuss the influence of different soil pH value on Soxhlet extraction process and ultrasonic extraction process. The result of different extraction in this research was using the t-test method to compare. The study indicated that the extraction of naphthalene tests, the soil moisture contents had obvious influence on extraction efficiency. But the extraction of phenanthrene tests, the soil moisture contents didn’t have any influence on the extraction efficiency. Assay with t-test for the extraction results from two kinds of silt loam and clay soil. Statistics were all fallen on 95% of confidence level, and it proved that the soil extraction was unconcerned with soil matrix, in other words, the extraction efficiency of naphthalene and phenanthrene was uninfluenced on different soil matrix. To adjust different soil pH, the soil extraction was also unconcerned with soil matrix. The study was also modified the polluted soil by spiking standard solution of naphthalene and phenanthrene. It indicated that the high polluted phenanthrene soil through two different extraction processes. Their spiked recovery was 97.5~112.5%. Therefore, these two extraction processes were suitable for the high polluted phenanthrene soil to investigate.