Bioavailability and dissipation of anthracene from soil with different alkalinity and salinity.
Bioavailability and dissipation of anthracene from soil with different alkalinity and salinity.
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发表时间：
2015
影响因子：
0.7
通讯作者：
Carolina Castro-Silva;V. Ruíz-Valdiviezo;Sandra Gabriela Rivas-Rivera;Alma Rosa Sosa-Trinidad;M. Luna-Guido;L. Delgado-Balbuena;R. Marsch;L. Dendooven
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作者：
Carolina Castro-Silva;V. Ruíz-Valdiviezo;Sandra Gabriela Rivas-Rivera;Alma Rosa Sosa-Trinidad;M. Luna-Guido;L. Delgado-Balbuena;R. Marsch;L. Dendooven
污染物的生物利用度，如蒽（Anthra），一种多环芳烃（PAHs），以及它们从土壤中的去除与非穷尽技术（如羟丙基- β -环糊精（HPCD）或正丁醇）的可提取性有关。采用高效液相色谱法（HPCD）、正丁醇法和穷举超声法提取原Texcoco湖无菌和未消毒碱性土壤中的炭疽菌，土壤pH值为pH 8.2 ~ 10.1，电导率为1.2 ~ 95.2 dS m（-1）。56 d后，穷尽法测定炭疽菌的生物去除率分别为24.4%和37.6%。穷尽法从土壤中去除炭疽菌的百分比与用HPCD或正丁醇提取的量无关。结果表明，用正丁醇或高效液相色谱法提取的炭疽菌与土壤中炭疽菌的去除率不相关。在本研究中，用正丁醇或HPCD提取的炭疽菌量不能预测土壤中炭疽菌的去除率。
Bioavailability of contaminants, such as anthracene (Anthra), a polycyclic aromatic hydrocarbon (PAHs), and their removal from soil has been related to their extractability with non-exhaustive techniques, such as hydroxypropyl-beta-cyclodextrin (HPCD) or n-butanol. Anthra was extracted with HPCD, n-butanol and by exhaustive ultrasonic extraction method from sterilized and unsterilized alkaline soil of the former lake Texcoco, having pH ranging from pH 8.2 to 10.1 and electrolytic conductivity varying from 1.2 dS m(-1) to 95.2 dS m(-1), respectively. About 24.4 and 37.6% of Anthra was removed biologically from soil as estimated by exhaustive technique after 56 days. The percentage of Anthra that was removed from soil by exhaustive technique was not related to the amount thatwas extractable with HPCD or n-butanol. It was found that the Anthra extractable with n-butanol or HPCD did not correlate well with the removal of the contaminant from soil. In this study, the removal of Anthra from soil could not be predicted by the amount of Anthra that was extracted with n-butanol or HPCD .