TY - JOUR
T1 - Organochlorine contaminants in eggs
T2 - The influence of contaminated nest material
AU - Caas, Jaclyn E.
AU - Anderson, Todd A.
N1 - Funding Information:
We would like to thank Phil Howard of the Syracuse Research Corporation for providing molecular connectivity values. This research was supported in part by the US Environmental Protection Agency (grant no. R826310 to Scott McMurry) and by a Howard Hughes Medical Institute grant through the Undergraduate Biological Sciences Education Program to Texas Tech University.
PY - 2002
Y1 - 2002
N2 - Snake eggs were placed in a synthetic nest contaminated with known concentrations of six organochlorines (OCs) to evaluate whether OCs from contaminated nest material accumulate in eggs. It was hypothesized that contaminated nest material may have contributed to OC burdens in eggs observed previously. The six OCs tested included lindane, heptachlor, aldrin, dieldrin, endrin, and DDT. Eggs were removed at 0, 4, and 6 weeks and analyzed using gas chromatography with electron capture detection. Lindane was found at the highest concentration (153 ng/g at 4 weeks and 162 ng/g at 6 weeks). The next highest uptake was for endrin (25 ng/g at 4 weeks and 106 ng/g at 6 weeks). Heptachlor, aldrin, and dieldrin were also taken up into the eggs, but DDT was not detected in any of the eggs at any sampling period. The concentration of OCs increased from week 4 to week 6 for all the OCs except DDT. Structure-activity relationships were examined to determine which physicochemical properties of the OCs tested could be used as predictors of uptake into the eggs. A variety of physicochemical properties were evaluated including vapor pressure and molecular connectivity (a numerical description of topology). Octanol-water partition coefficient (Kow) was a good predictor (r2 = 0.63, p = 0.06) of OC uptake into the eggs using this limited data set.
AB - Snake eggs were placed in a synthetic nest contaminated with known concentrations of six organochlorines (OCs) to evaluate whether OCs from contaminated nest material accumulate in eggs. It was hypothesized that contaminated nest material may have contributed to OC burdens in eggs observed previously. The six OCs tested included lindane, heptachlor, aldrin, dieldrin, endrin, and DDT. Eggs were removed at 0, 4, and 6 weeks and analyzed using gas chromatography with electron capture detection. Lindane was found at the highest concentration (153 ng/g at 4 weeks and 162 ng/g at 6 weeks). The next highest uptake was for endrin (25 ng/g at 4 weeks and 106 ng/g at 6 weeks). Heptachlor, aldrin, and dieldrin were also taken up into the eggs, but DDT was not detected in any of the eggs at any sampling period. The concentration of OCs increased from week 4 to week 6 for all the OCs except DDT. Structure-activity relationships were examined to determine which physicochemical properties of the OCs tested could be used as predictors of uptake into the eggs. A variety of physicochemical properties were evaluated including vapor pressure and molecular connectivity (a numerical description of topology). Octanol-water partition coefficient (Kow) was a good predictor (r2 = 0.63, p = 0.06) of OC uptake into the eggs using this limited data set.
KW - Contaminated sediments
KW - Eggs
KW - Organochlorines
KW - Uptake
UR - http://www.scopus.com/inward/record.url?scp=0036118013&partnerID=8YFLogxK
U2 - 10.1016/S0045-6535(02)00019-X
DO - 10.1016/S0045-6535(02)00019-X
M3 - Article
C2 - 12047069
AN - SCOPUS:0036118013
VL - 47
SP - 585
EP - 589
JO - Chemosphere
JF - Chemosphere
SN - 0045-6535
IS - 6
ER -