Journal
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Volume 84, Issue 2, Pages 212-216Publisher
SPRINGER
DOI: 10.1007/s00128-009-9919-x
Keywords
Phthalates; Animal diets; Beddings; Gas chromatography-mass spectrometry
Categories
Funding
- Ministry of Health, Labor, and Welfare, Japan
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We have developed a gas chromatography-mass spectrometry method to measure five phthalates (dibutyl phthalate, butylbenzyl phthalate, di-2-ethylhexyl phthalate, diisooctyl phthalate, and diisononyl phthalate) in diets and beddings for experimental animals. The recoveries from diets and beddings spiked with five phthalates were 98.8%-148% with coefficients of variation of 0.4%-7.8% for diets and 94.7%-146% with coefficients of variation of 1.0%-5.0% for beddings. We analyzed commercial animal diets and beddings, and found that the levels of phthalates varied from sample to sample; the concentrations of five phthalates were 141-1,410 ng/g for diets and 20.5-7,560 ng/g for beddings.
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