THE EFFECTS OF SEDIMENT CONTACT TIME ON K-OC OF NONPOLAR ORGANIC CONTAMINANTS

被引：13

作者：

BRANNON, JM ^{[1
]}

PENNINGTON, JC ^{[1
]}

MCFARLAND, VA ^{[1
]}

HAYES, C ^{[1
]}

机构：

[1] ASCI CORP,MCLEAN,VA 22101

来源：

CHEMOSPHERE | 1995年 / 31卷 / 06期

关键词：

D O I：

10.1016/0045-6535(95)00199-I

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Mobility of nonpolar organic contaminants depends upon partitioning between sediment solids and interstitial water. The objective of this study was to measure the constancy of K-oc values for polychlorinated biphenyls (PCBs) and polynuclear aromatic hydrocarbons (PAHs) over time. Two PCBs and one PAH were incubated and sampled periodically over a 6 month period. Results demonstrated that as time of contact increased, the value of K-oc increased, reflecting a decrease in the truly dissolved contaminant concentration in the interstitial water. The data also showed a marked dependence of K-oc on the source of organic carbon and a 2 to 17 fold deviation of measured K-oc values from values predicted by empirical relationships. Therefore, empirical data may be the only truly reliable alternative for determining mobility potential of these contaminants.

引用

页码：3465 / 3473

页数：9

共 26 条

[1]

BRANNON JM, 1993, B ENVIRON CONTAM TOX, V51, P873

[2] FLUORANTHENE K-DOC IN SEDIMENT PORE WATERS [J].