Oliver B G, Bothen K D
Int J Environ Anal Chem. 1982;12(2):131-9. doi: 10.1080/03067318208071576.
A soxhlet extraction technique for recovering chlorobenzenes from sediments and fish is described. The extract is concentrated by evaporation, cleaned up with florisil (sediments) or a combination of alumina, silica gel, florisil and acidified silica gel (fish) before quantitation by capillary gas chromatography with an electron capture detector. Recoveries for all chlorobenzenes are greater than 80%. Detection limits of the technique are approximately 0.05 ng/g (ppb) for penta- and hexachlorobenzene, approximately 0.2 ppb for the tetrachlorobenzenes, approximately 0.4 ppb for the trichlorobenzenes, approximately 5 ppb for the dichlorobenzenes, and approximately 1500 ppb for monochlorobenzene.
本文描述了一种从沉积物和鱼类中回收氯苯的索氏提取技术。提取物通过蒸发浓缩，在使用带电子捕获检测器的毛细管气相色谱法定量之前，用弗罗里硅土（沉积物）或氧化铝、硅胶、弗罗里硅土和酸化硅胶的组合（鱼类）进行净化。所有氯苯的回收率均大于80%。该技术对五氯苯和六氯苯的检测限约为0.05纳克/克（ppb），对四氯苯约为0.2 ppb，对三氯苯约为0.4 ppb，对二氯苯约为5 ppb，对一氯苯约为1500 ppb。
