CAJ | 학술논문

采用盆栽试验方法,以苊为多环芳烃(PAHs)代表物,研究了丛枝菌根(AM)作用下土壤中 PAHs 的残留及形态.供试污染土壤中苊的起始浓度为 35.0 mg/kg.结果表明,AM作用下土壤中苊总残留量明显降低;接种摩西球囊霉菌Glomus mosseae或幼套球囊霉菌Glomus etunicatum后,供试两个污染土样中苊总残留降解率达32.7%～45.2%,比未接种对照高 6.8%～9.8%.有机溶剂提取态是土壤中苊残留的主要部分,AM 作用促进了苊各形态之间的转化;接种AM后土壤 1、2 中苊可脱附态和有机溶剂提取态残留量分别比对照降低了17.0%～37.8% 和 5.4%～26.6%,而结合态残留量比对照增加了12.2%～89.5%.AM 作用能降低土壤中苊可提取态残留含量;但培养55 天后土壤中仍有 65.7%～81.7% 苊属于可提取态残留,对生物有毒害风险.
채용분재시험방법,이액위다배방경(PAHs)대표물,연구료총지균근(AM)작용하토양중 PAHs 적잔류급형태.공시오염토양중액적기시농도위 35.0 mg/kg.결과표명,AM작용하토양중액총잔류량명현강저;접충마서구낭매균Glomus mosseae혹유투구낭매균Glomus etunicatum후,공시량개오염토양중액총잔류강해솔체32.7%～45.2%,비미접충대조고 6.8%～9.8%.유궤용제제취태시토양중액잔류적주요부분,AM 작용촉진료액각형태지간적전화;접충AM후토양 1、2 중액가탈부태화유궤용제제취태잔류량분별비대조강저료17.0%～37.8% 화 5.4%～26.6%,이결합태잔류량비대조증가료12.2%～89.5%.AM 작용능강저토양중액가제취태잔류함량;단배양55 천후토양중잉유 65.7%～81.7% 액속우가제취태잔류,대생물유독해풍험.
Pot experiment was conducted with a series of treatments of soils in a greenhouse to investigate the effects of arbuscular mycorrhiza (AM) on the residual forms of PAHs in soils.The initial concentrations of acenaphthene in soils were 35.0 mg/kg.It has been found that AM significantly reduced acenaphthene content in soils.The degradation rates of acenaphthene in soils with inoculation of Glomus mosseae and Glomus etunicatum were 32.7%-45.2%,increased by 6.8%-9.8% than the control (without AM).The non-desorbing fractions dominated the total residues of acenaphthene,and AM promoted the transformation between acenaphthene forms.The desorbing fractions and non-desorbing fractions of acenaphthene were 17.0%-37.8% and 5.4%-26.6% lower than the control,while the bound residual was 12.2%-89.5% higher than the control.AM may reduce the amount of extractable residues of acenaphthene,however,the extractable fractions account for 65.7%-81.7% of total residues of acenaphthene in soils after 55-day incubation,having a toxic risk to organisms.