急求翻译英文摘要，多谢

The author established a GC-MS method（注意：method色谱通用术语，不能用way, mean等）for the rapid detection of 13 chlorinated organic compounds and Benzo-[α]-pyrene through the optimization of solid-phase extraction conditions and the improvement of chromatographic separation conditions. The advantages of the method are rapid pre-treatment, low pollution, short chromatographic running (detected within 20min), applicable for batch analyses of samples. SIM（“分段法选择离子扫描”是一个完整的全称，缩写为SIM，可能是selective ion ??? 或者Scanning of ????，我找不到这个全称） technology adopted in the method has higher sensitivity, better linear relationship, and lower limit of detection (<5.0ng/L), and the range of its recovery rates is 78％-110％.

By the fact that the optimization strengthens appearance extraction condition,have improved chromatograph condition , have built one kind of the GC-MS method determining water thirteen kinds organic chlorines and benzo (a) grass rapidly. The method characteristic is small process speed in th