Centre for Atmospheric Research Experiments, Science and Technology Branch, Environment Canada, 6248 Eighth Line, Egbert, Ontario, L0L 1N0, Canada.
Environ Pollut. 2010 May;158(5):1303-10. doi: 10.1016/j.envpol.2010.01.016. Epub 2010 Mar 4.
Hydroxypropyl-beta-cyclodextrin (HPCD) was used as a non-exhaustive extractant for organochlorine pesticides (OCs) and polychlorinated biphenyls (PCBs) in muck soil. An optimized extraction method was developed which involved using a HPCD to soil mass ratio of 5.8 with a single extraction period of 20 h. An aging experiment was performed by spiking a muck soil with (13)C-labeled OCs and non-labeled PCBs. The soil was extracted with the optimized HPCD method and Soxhlet apparatus with dichloromethane over 550 d periodically. The HPCD extractability of the spiked OCs was greater than of the native OCs. A decreased in HPCD extractability was observed for the spiked OCs after 550 d of aging and their extractability approached those of the natives. The partition coefficient between HPCD and soil (logK(CD-Soil)) was negatively correlated with the octanol-water partition coefficient (logK(OW)) with r(2)=0.67 and p<0.05.
羟丙基-β-环糊精（HPCD）被用作淤泥土壤中有机氯农药（OCs）和多氯联苯（PCBs）的非消耗性提取剂。开发了一种优化的提取方法，该方法涉及使用 HPCD 与土壤的质量比为 5.8，并进行单次提取 20 小时。通过向淤泥土壤中添加（13）C 标记的 OCs 和非标记的 PCBs 进行老化实验。用优化的 HPCD 方法和索氏提取器用二氯甲烷在 550 天内定期提取土壤。与原生 OCs 相比，添加的 OCs 的 HPCD 可提取性更高。经过 550 天老化后，添加的 OCs 的 HPCD 可提取性下降，其可提取性接近原生 OCs。HPCD 与土壤之间的分配系数（logK（CD-Soil））与辛醇-水分配系数（logK（OW））呈负相关，r²=0.67，p<0.05。
