A green technique was designed for assessing toxic equivalence (TEQ) levels of polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs) in sediments and soil from dioxin-contaminated areas. This technique combines a fast cleanup system with a dioxin-responsive-element (DRE)-driven luciferase bioassay. Samples from sediment (n = 10) and soil (n = 11) were analyzed with the technique; levels of PCDD/Fs ranged from 75.1 to 2,670 ng DRE-driven luciferase activity (DL)-TEQ/kg dry weight (d.w.). Significant correlations were found between DL-TEQs (by the bioassay) and PCDD/F WHO-TEQs (by HRGC/HRMS). DL-TEQs is significantly correlated with WHO-TEQs of 2,3,7,8-TCDD and 1,2,3,7,8-PeCDD using a multiple stepwise linear regression model (adjusted R2 = 0.962, p < 0.001)
Date:
2011-03
Relation:
Bulletin of Environmental Contamination and Toxicology. 2011 Mar;86(3):278-282.
