(Table 1) Composition of bituminous substances in sediments from the East Pacific Rise

Bitumoid contents in metalliferous sediments from axial parts of the East Pacific Rise (EPR) have been studied. Maximal concentrations of bitumoid matter and aromatic hydrocarbons have been found in the axial zones of the EPR as a result of hydrothermal processes and accumulation of endogenous matter in the sediments. Distribution of bitumoids and hydrocarbons coincides with deposition of ore minerals that indicates similarity of their sources.

Surface active substances in the water column during POLARSTERN cruise ANT-XXI/3 (EIFEX)

Surface active substances (SAS) in the water column were measured by voltammetry using the electrochemical probe o-nitrophenol (ONP) during EIFEX, a mesoscale open ocean iron enrichment experiment in the Southern Ocean. SAS levels were low throughout the experiment (<0.005 - 0.03 mg/L Triton X-100 equivalents). Initially SAS was extremely low in the photic zone, but as the phytoplankton bloom developed concentrations markedly increased throughout the upper 100 m (~0.02 mg/L Triton X-100 equivalents). Highest concentrations of SAS (>0.02 mg/L Triton X-100 equivalents) were found at the end of the bloom particularly at density discontinuities where organic material may accumulate. Exudates from diatoms appeared to be the major source of SAS during EIFEX, either from direct extracellular release or in the action of being grazed upon by zooplankton.

Region 5 hazardous waste and toxic substances.

Mode of access: Internet.

Regulatory analysis proposed premanufacture notification and review procedures : Toxic Substances Control Act, section 5.

"October 1980."

Protecting the ozone layer : safe disposal of home appliances containing ozone-depleting substances.

Mode of access: Internet.

Development and validation of methods for sampling and analysis of workplace toxic substances /

Mode of access: Internet.

Delays in setting workplace standards for cancer-causing and other dangerous substances, Department of Labor, Department of Health, Education, and Welfare : report to the Congress /

Publication date stamped on cover.

Economic impact assessment of a chlorofluorocarbon production cap : support document, section 6, proposed rule, Toxic Substances Control Act /

"Contract no. 68-01-6236."

Citizens' guide to toxic substances information /

Mode of access: Internet.

Potentially toxic and hazardous substances in the industrial organic chemicals and organic dyes and pigments industries /

Mode of access: Internet.

Desiccated alimentary vegetable substances : reports of two boards of navy officers, convened by order of William A. Graham, at the U.S. Navy yard, New York, in Nov. 1851, and at Washington City, in May, 1852 ... /

"To examine certain desiccated alimentary vegetable substances, prepared, after the process of M. Masson ... and, after the process of Dr. J.N. Gannal ... the conserve of milk, prepared by M. de Lignac ... and also the preserved potato of D. and H. Edwards and Co."