Thus, detection of [gamma]-HCH and heptachlor
, respectively, was associated with decreases in both monocytes and eosinophils by 13-24%.
(2007) further noted the importance of examining the effect of mixtures of chemicals on associations with immune system outcomes, reporting a positive association between CD8 + cells and co-exposure to heptachlor
epoxide and chlordane in breast milk and a negative association between CD16 + cells and coexposure to DDT and PCBs.
For biota, bioaccumulation factors (BAF) of OCPs were at 23.7-560 much higher than those of PAHs (0.1-1.2), with heptachlor
epoxide showing the highest mean BAF .
ADI provisory values for OCPs provided by the WHO in 2009 are 0.6 [micro]g x [kg.sup.-1] [day.sup.1] for HCB, 5 [micro]g x [kg.sup.-1] [day.sup.1] for [summation]-HCH, 0.5 [micro]g x [kg.sup.-1] [day.sup.1] for X-chlordane, 10 [micro]g x [kg.sup.-1] [day.sup.-1] for [summation]-DDX, 0.1 [micro]g x [kg.sup.-1] [day.sup.1] for heptachlor
, 10 [micro]g x [kg.sup.-1] [day.sup.1] for methoxychlor and 0.1 [micro]g x [kg.sup.-1] [day.sup.-1] for Hg.
Standard OCPs including pp-DDT, ppDDD, pp-DDE, [alpha] HCH, [gamma] HCH, heptachlor
epoxide, aldrin, endrin, chlordane, methoxychlor, and HCB were obtained from Sigma-Aldrich (Germany).
Of the OCPs under investigation, seven ([beta]-HCH, [gamma]-HCH, heptachlor
, aldrin, p,p'-DDD, p,p'-DDT, and methoxychlor) were present in soil samples from the five locations.
The challenge at hand dealt with four specific contaminants that FPL wants to flush underground--the pesticide heptachlor
and industrial solvents ethylbenzene, toluene, and tetrachloroethylene.
However, HCH and Heptachlor
was above the MRLs of Codex Alimentarius.
Now, we have something called fipronil that is as deadly to termites as chlordane and heptachlor
but not as risky to humans.
BDE 47 was correlated with semi-volatile OCP/OCOs including TeCBz, PeCBz, PCA, and heptachlor
epoxide (Table S9B).
epoxide was found in concentrations above the permitted level, according to the Codex Alimentarius.
Aldrin, dieldrin and heptachlor
are no longer used to control termites in the kingdom.