Skarphédinsdóttir Halldóra, Ericson Gunilla, Svavarsson Jörundur, Naes Kristoffer
Laboratory for Aquatic Ecotoxicology, Department of Applied Environmental Science, Stockholm University, SE-106 91 Stockholm, Sweden.
Mar Environ Res. 2007 Oct;64(4):479-91. doi: 10.1016/j.marenvres.2007.03.007. Epub 2007 Apr 19.
DNA adducts in gills and digestive gland, as well as polycyclic aromatic hydrocarbon (PAH) tissue levels were analysed in blue mussels (Mytilus spp.) from Nordic coastal areas (Iceland, Norway and Sweden) with diffuse or point sources of PAHs of various origins. Both DNA adduct and PAH tissue levels were generally low, indicating low PAH exposure to the mussels in the areas studied. DNA adducts were found to be higher in gills than in digestive gland of the mussels at all sites studied. Elevated DNA adduct levels in gills were found at 6 sites out of 18 compared to reference sites in respective coastal zones. Adduct levels ranged from 0.5 to 10 nmol adducts/mol normal nucleotides, being highest in mussels from Reykjavík harbour, Iceland (intertidal mussels), and from Fiskaatangen, Norway (subtidal mussels). Total PAH tissue levels in the mussels ranged between 40 and 11,670 ng/g dry wt., and were significantly correlated with DNA adduct levels (r(2)=0.73, p<0.001). PAH ratio values indicated that the PAHs were in most cases of pyrolytic origin, but with petrogenic input near harbours and an oil refinery.
对来自北欧沿海地区（冰岛、挪威和瑞典）的蓝贻贝（紫贻贝属）的鳃和消化腺中的DNA加合物以及多环芳烃（PAH）组织水平进行了分析，这些地区存在各种来源的PAH扩散源或点源。DNA加合物和PAH组织水平总体较低，表明在所研究地区贻贝接触的PAH水平较低。在所研究的所有地点，贻贝鳃中的DNA加合物含量均高于消化腺。与各沿海区域的参考地点相比，在18个地点中有6个地点的鳃中DNA加合物水平升高。加合物水平范围为0.5至10 nmol加合物/摩尔正常核苷酸，在冰岛雷克雅未克港（潮间带贻贝）和挪威菲斯卡坦根（潮下带贻贝）的贻贝中最高。贻贝中的总PAH组织水平在40至
11,670 ng/g干重之间，并且与DNA加合物水平显著相关（r(2)=0.73，p<0.001）。PAH比值表明，在大多数情况下，PAH来源于热解，但在港口和炼油厂附近有石油成因输入。
