PRELIMINARY COMPARISON OF SEDIMENT EXTRACTION PROCEDURES AND EXCHANGE SOLVENTS FOR HYDROPHOBIC COMPOUNDS BASED ON INHIBITION OF BIOLUMINESCENCE

被引：14

作者：

CAMPBELL, M ^{[1
]}

BITTON, G ^{[1
]}

KOOPMAN, B ^{[1
]}

DELFINO, JJ ^{[1
]}

机构：

[1] UNIV FLORIDA,DEPT ENVIRONM ENGN SCI,GAINESVILLE,FL 32611

来源：

ENVIRONMENTAL TOXICOLOGY AND WATER QUALITY | 1992年 / 7卷 / 04期

关键词：

D O I：

10.1002/tox.2530070404

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Two procedures for extracting hydrophobic contaminants from sediment samples col-lected from various sites in Florida were compared. The sediments, which varied in nature and degree of chemical contamination, were extracted with dichloromethane by shaking (24 h) and sonication (15 min). The dichloromethane extracts obtained were solvent exchanged into either methanol or dimethyl sulfoxide (DMSO). The efficiency of each procedure was evaluated based on the response of Photobacterium phosphoreum in the Microtox assay to the solvent extracts. The 24-h shaking procedure produced significantly higher toxicity than the 15-min sonication procedure for 8 of the 10 sediment samples tested. Comparisons of methanol and DMSO as exchange solvents revealed that there was generally no significant difference between these solvents in terms of toxicity.

引用

页码：329 / 338

页数：10

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