施肥对苏丹草修复石油污染土壤的影响  

Effect of fertilization on remediation of petroleum contaminated soil by Sudangrass

作　　者：韩涛[1] 赵志鹏[1] 王莹莹[1] 

机构地区：[1]南开大学环境科学与工程学院,环境污染过程与基准教育部重点实验室,天津市城市生态环境修复与污染防治重点实验室,天津300071

出　　处：《农业环境科学学报》2016年第1期86-92,共7页Journal of Agro-Environment Science

基　　金：国家自然科学基金(31270545)

摘　　要：采用盆栽试验,研究了苏丹草修复石油污染土壤的效果,在有、无氮磷钾肥的条件下,对苏丹草的生长发育和石油的组分进行了分析。结果表明,经过90 d的修复,施肥处理的石油烃去除率比无施肥处理的对照高10.31%;苏丹草的株高、地上干重和地下干重也得到了显著提高,而叶绿素a/b和叶绿素a/类胡萝卜素均有所降低;芳烃（16种多环芳烃）的去除率和烷烃（C8~C40）的去除率分别提高了7.39%和6.44%。不论是对照还是施肥处理,烷烃的去除效果均优于芳烃。In the present study, the effect of fertilization on the remediation of petroleum contaminated soil by Sudangrass was investigated in a pot experiment. Growth of Sudangrass and removal and components of petroleum hydrocarbons were examined. Results showed that grow- ing Sudangrass significantly decreased petroleum hydrocarbon content in the soil. After 90 day of the experiment, the removal rate of petroleum hydrocarbons was 10.31% greater under fertilization（up to 54.20%） than under the un-fertilized control. Fertilization also pro- moted the growth of Sudangrass. The shoot height（up to 23.07 cm）, shoot dry weight（up to 0.45 g）, and root dry weight（up to 0.08 g ） of Sudangrass under fertilization were all significantly higher than those under the un-fertilized control. The removal rates of aromatic hydro- carbons（ 16 PAHs, up to 21.35%） and alkanes（C8~C40, up to 51.94% ） were respectively 7.39% and 6.44% greater under fertilized condi- tions than under the control. Significant differences were observed in the removal rates between alkanes and aromatic hydrocarbons. The re- moval efficiencies of alkanes were greater than those of aromatic hydrocarbons under both fertilized and control conditions. Phenanthrene, pyrene and benzo[a] anthracene were the main components of the aromatic hydrocarbons, representing more than 80% of the total aromatic hydrocarbons in the soil. Our results demonstrate that fertilization could promote the remediation of petroleum contaminated soil by Sudcm- grass.

关 键 词：氮磷钾肥 苏丹草 石油烃 芳烃 烷烃 

分 类 号：X53[环境科学与工程—环境工程]