Oxides of nitrogen are a concern as effluents to atmospheres
because they participate in photochemical reactions which produce
smog, because they attenuate sunlight which gives the atmosphere a
reddish brown cast, and because of their toxic properties and the
health hazards associated with the photochemical products they produce.
Oxides of...
In Medford, Oregon, the major source of pollution is the lumber
mill waste burner. Its low combustion efficiency results in the
emission of large quantities of particulate into the atmosphere.
Due to the influence of the atmospheric radiation inversion and
possibly the poor performance of the burners at the time...
The importance of automobile exhaust as a source of atmospheric pollutants has been recognized for several years. With the
control of stationary sources in geographic areas such as Los
Angeles County, the automobile has become the major uncontrolled
source of air pollution.
The three major pollutants emitted by automobiles are...
The examination in some detail of the relationships between
air quality and the thermal structure of the lowest layers of the atmosphere
constituted the primary objective of this thesis. Data for
the study were assembled during April-June 1965 at the U.S.
Weather Bureau Station, McNary Field, Salem, Oregon. The measures...
A field study on grass field burning was conducted in the
Willamette Valley of Oregon during the summer of 1965. Approximately 243,000 acres of grass fields are burned in the valley during
August and September. Serious air pollution problems result from
this burning. The purposes of the study were to...
A study was conducted to determine what effects the type of
pollutants, storage conditions, storage time, and method of sample
conditioning have on the reported weight of an air pollutant collected
by filtration. Samples were collected from a refuse dump, an arc
furnace smelting nickel ore, and a rotary kiln...
The "Teepee" type wood residue incinerator, similar to
many other sources, requires sampling at the point where the emissions enter the atmosphere. Because the location of the emission
point is hazardous and unpleasant for the operation of a sampling
probe, a portable, tilt-up column was developed which permitted installation, operation,...
"Indexed herein are references to literature pertaining to the marine waters of Oregon. References to papers, depending on the subject matter contained in the paper, are indexed under one or more of the following headings: Marine Biology, Climate, Fisheries, Geology, Hydrology, Chemical and Physical Oceanography, and Bibliographies, Literature Surveys and...
PART I. A chemical examination of the materials toxic to fish in
kraft pulp mill wastes has been made as part of a water pollution
study. Thirty gallons of "foul condensate" from a typical kraft mill
gave 14 g of organic material when extracted with methylene chloride,
and an additional...
A source test was conducted to determine the particulate and the
total gaseous hydrocarbon emissions from a gas heated veneer dryer.
Samples were taken on eight separate days from the exhaust stacks
while the dryer was processing Douglas fir veneer. Of the eight days,
three was used to determine the...
The study of aldehydes in diesel exhaust is important because
of their relationship to diesel odor, to air pollution, and to the development
of a theory of combustion. Therefore, a study is made
of the low order aliphatic aldehydes using gas chromatography in
conjunction with standard wet chemical tests.
The...
A mathematical model of the atmosphere in an airshed is developed, which relates pollutant source distributions and intensities
to the volume of air available for dispersion and to pollutant concentrations
or air quality standards. It can be used as a tool for obtaining
an answer to an air resource management...
Raw and biologically stabilized Kraft mill effluents were introduced
into laboratory artificial streams at a ratio of 15 ml per liter
of water over a two year period. Effluent from the stabilization pond
of a second mill was introduced at concentrations of from 5 to 40 ml
per liter of...