摘要
应用 Banerjee( 1984 )实验方法 ,即通过水体中化合物浓度变化间接测定由于生物富集所产生的生物体内石油烃浓度变化 ,在此基础上建立了生物富集双箱动力学模型。根据该模型可以简单方便地测定海洋经济贝类对石油烃的生物富集动力学参数。应用该方法实验测定了紫贻贝 ( Mytilusedulis)对 3种石油烃 ( 0号柴油 ,90号汽油 ,大港原油 )的吸收速率常数 k1,释放速率常数 k2 和生物富集因子 BCF等毒性动力学参数。其中 k1为 15.4～ 119.0 /d,k2 为 0 .0 10～ 0 .0 4 3/d,BCF为 72 3～3876。结果表明 ,紫贻贝对 3种不同来源的石油烃的毒性动力学参数存在较大的差异 ,其中 BCF大小顺序为 :柴油 >汽油 >原油 ,这可能主要是由于柴油中所含的两环、三环芳烃 (如萘、菲等化合物 )浓度较高所致。
Banerjee method (1984), in which concentration of petroleum hydrocarbons in organism tissue due to bioconcentration was measured by variation between concentration of pollutant in water in control without organism and sample with organism, was applied. Then, a kinetic model of two compartment bioconcentration was developed. The model offers an available and simple method for measuring kinetic parameters for bioconcentration of petroleum hydrocarbon by marine commercial mussels. With the method, uptake and elimination rate constants, k 1 and k 2, and bioconcentration factor, BCF were measured for bioconcentration of petroleum hydrocarbon of WSF associated with crude oil and fuels (including Dagang crude oil, No 90 gasoline and No 0 diesel) by Mytilus edulis. It was shown that k 1 ranged from 15 4 to 119 0/d, k 2 from 0 010 to 0 043/d, and BCF from 723 to 3876. BCF decreased as following: diesel>gasoline>crude oil. It suggests that the diesel is the most toxic to Mytilus edulis, probably attributable to higher contents of aromatic hydrocarbons with two or three benzene rings.
出处
《海洋水产研究》
CSCD
2001年第1期32-36,共5页
Marine Fisheries Research
基金
国家自然科学基金!项目 (49776 30 2和 49976 0 2 7)资助
