The fate and behavior of polycyclic aromatic hydrocarbons(PAHs) through feeding and excretion of annelids
The fate and behavior of polycyclic aromatic hydrocarbons(PAHs) through feeding and excretion of annelids
复制标题
环节动物摄食和排泄中多环芳烃（PAH）的归宿和行为
DOI：
10.1080/10406638.2010.525167
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发表时间：
2010
影响因子：
2.4
通讯作者：
Atsuko Nishigaki and Shigeru Ohshima
中科院分区：
文献类型：
--
作者：
Mayu Onozato;Atsuko Nishigaki and Shigeru Ohshima
采用气相色谱-质谱联用技术（GC/MS）测定了环节动物沉积物和排泄物中多环芳烃（PAHs）的浓度，并研究了PAHs在滩涂中的运动情况。对于 Arenicola basiliensis 和 Marphysa sanguinea 的排泄物，PAH 浓度范围分别为 4.4–80.4 和 61.2–286.9 μg/kg-dry；前者含有的多环芳烃含量约为沉积物的10倍，后者含量约为沉积物的100倍。两种生物之间 PAH 浓度的差异归因于它们的摄食行为； M. sanguinea 比 A. basiliensis 摄入更多的含有 PAH 的碎屑。此外，当血红海藻的排泄物在沉积物上放置2小时后，PAH浓度下降到一半。 PAH 的减少可能是由于 M. sanguinea 排泄物中微生物和/或酶的化学变化所致。
The concentration of polycyclic aromatic hydrocarbons (PAHs) in sediment and excrements of annelids was measured by gas chromatography-mass spectrometry (GC/MS) and the movement of PAHs in the tidal flat was investigated. The PAH concentrations ranged 4.4–80.4 and 61.2–286.9 μg/kg-dry for the excrement of Arenicola basiliensis and of Marphysa sanguinea, respectively; the former contained about 10 times as much PAHs as the sediment and the latter about 100 times. The difference in the PAH concentration between the two organisms was attributed to their feeding behavior; M. sanguinea intakes much more detritus containing PAHs than A. basiliensis. Moreover, after the excrement of M. sanguinea had stood on the sediment for 2 hours, the PAH concentrations decreased to half. The reduction of the PAHs may arise from chemical changes owing to microorganisms and/or enzymes in the excrement of M. sanguinea.