疏水性有机物在生物富集中对有机物的吸附  

Adsorption of Hydrophobic Organic Compounds on Organic Compounds in the BCF

作　　者：姜隽[1] 

机构地区：[1]太原市环境保护信息中心,山西太原030002

出　　处：《山西科技》2016年第6期62-65,共4页Shanxi Science and Technology

摘　　要：根据对洄游鱼试验中潜在的生物富集因子(BCF)进行研究,将11种强疏水性的有机物质分别投入鱼饲料(EF)、滤渣(FR)、有机物(OM)中,通过固体-水分配系数(KD)、总有机碳-水(KTOC)、溶解有机碳-水(KDOC)三项系数的变化对有关的固相微萃取法的吸附固相法的批量平衡实验进行研究。结果表明,强疏水性有机物质对EF,FR的卵圆细胞亲和性产生显著影响,而在有关吸附剂之间的影响和有机质的特征方面,EF,KDOC的值都明显高于KTOC。这些结果都对物质种类的相关性研究和生物富集作用产生积极的影响。With regard to a potential underestimation of bioconcentration factors（ BCF） in flow through fish tests,sorption of 11 highly hydrophobic organic chemicals（ HOCs） from different substance classes was systematically investigated for the first time in the presence of fish feed（ FF） and filter residues（ FR）,the organic matter（ OM） most relevant for fish bioconcentration studies. Sorption was investigated in batch- equilibrium experiments by solid phase microextraction（ SPME） resulting in partitioning coefficients of solid- water（ Kd）,total organic carbon-water（ KTOC）,and dissolved organic carbon-water（ KDOC）. Results prove a high affinity of HOCs for FF and FR supporting a significant impact on BCF studies and differing from sorption to Aldrich- humic acid（ AHA） utilized as reference sorbent. Sorption is influenced by interactions between HOCs and OM characteristics. For FF,KDOC values were higher than KTOC values. Results help to assess the relevance of interaction of HOCs from different substance classes with OM relevant for BCF studies.

关 键 词：生物富集 固相微萃取法 平衡 吸附剂 

分 类 号：O69[理学—化学]