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The Onley-Yip procedure for determining ethylenethiourea (ETU) in milk and crops was modified to reduce interferences by the ethylenebisdithiocarbamates (EBDCs). A 20 g crop-methanol extract is cleaned up by adsorbing the sample onto Gas-Chrom S. desorbing ETU, and eluting ETU from aluminum oxide with chloroform containing ethanol. ETU is converted to the(More)
  • N F Ives
  • Journal - Association of Official Analytical…
  • 1975
A simple and sensitive method is described for determining vinyl chloride monomer in air. Vinyl chloride monomer from a sample of air is trapped onto a Tenax GC trap cooled with Dry Ice. The trap is installed on a gas chromatograph by a simple valve arrangement. The trap is heated, and the entire sample is flushed onto the gas chromatographic column. Vinyl(More)
Two chlorinated insecticide feeding studies from 1967-1968, using broiler chicks, have been completed. In Study I, lindane, heptachlor epoxide, dieldrin, endrin, methoxychlor, and DDT were fed in combination at 3 levels: 0.05, 0.15, and 0.45 ppm. Data show that, in fat tissues, heptachlor epoxide attained a level approximately 20 times the respective levels(More)
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