Download Analysis of Environmental Endocrine Disruptors by Lawrence H. Keith, Tammy L. Jones, Larry L. Needham PDF

By Lawrence H. Keith, Tammy L. Jones, Larry L. Needham

Endocrine disruptors are chemical substances that, between different destructive results, reason start defects in people and animals. They contain DES, an anti-nausea drug utilized in the Fifties while pregnant, and should be present in over 70 universal chemical substances starting from insecticides to plastics. This publication seems to be at contemporary advancements within the sector and examines screening/monitoring equipment and analytical techniques.

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Investigations into the migration of BPA to vegetable liquidsfromepoxycoated cans were performed. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1999. 47 grocery stores. Except for canned tomatoes, only the aqueous portion of the products was analyzed. Solids were separated by centrifugation, and the liquids subjected to the same SPE procedure used for canned infant formula. Then comparative analysis of the final extracts was performed by using both reversed phase H P L C with fluorescence detection, and capillary GC with mass selective detection in the selected ion monitoring mode.

ACS Symposium Series; American Chemical Society: Washington, DC, 1999. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1999. 0Ε+41 ι. 0Ε+5Η S ι. 5 Ε + 5 1 ο ο 2, 0 Ε + 5 5? 205 / 250 J 250001 200001 150001 100001 50001 0 30000-j 450001 40000Î 35000Î 50000-j li b , •. ι. 209 min. D 550001 C51S) Figure 2. GC-MS analysis of the hexane extract of a cheddar cheese wrapper. The upperfigureis the total ion chromatogram of the hexane extractable semivolatiles. The lowerfiguresare full mass scans from the chromatogram and represent on the left, di-n-butyl phthalate, and on therightdi-2-ethylhexyl phthalate.

2 min (lower right). In a survey, sixteen different cheese packages were analyzed for phthalate residues. Four of the packages were purchased in the Washington, DC area, and the remaining 12 werefrom4 TDS collection sites. In all, the packages represented different cheeses purchasedfrom13 different US cities. Di-n-butyl phthalate was not detected in any of the packages. 8 pg/g. Di-2-ethylhexyl phthalate was found in all but 1 of the packages at levelsfrom1 to 22 pg/g. 1 pg/g. In the next experiment, different portions of selected cheese packages were extracted and analyzed for phthalates.

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