INFORMATION TO USERSThis material was produced from a microfilm copy of the original document. While the most advanced technological means to photograph and reproduce this document have been used, the quality is heavily dependent upon the quality of the original submitted.The following explanation of techniques is provided to help you understand markings or patterns which may appear on this reproduction. 1.The sign or "target" for pages apparently lacking rrom the document photographed is "Missing Pagels)". If it was possible to obtain the missing page(s) or section, they are spliced into the film along with adjacent pages. This may have necessitated cutting thru an image and duplicating adjacent pages to insure you complete continuity.
When an image on the film is obliterated with a large round black mark, itis an indication that the photographer suspected that the copy may have moved during exposure and thus cause a blurred image. You will find a good image of the page in the adjacent frame.3. When a map, drawing or chart, etc., was part of the material being photographed the photographer foiiovved a definite mpthnn in "sectioning" the material. It is customary to begin photoing at the upper left hand corner of a large sheet and to continue photoing from left to right in equal sections with a small overlap. IV necessary, sectioning is continued again -beginning below the first row and continuing on until complete.
The majority of users indicate that the textual content is of greatest value,however, a somewhat higher quality reproduction couid be made uom "photographs" if essential to the undei-standing of the dissertation. Silver prints of "photographs" may be ordered at additional charge by writing the Order Department, giving the catalog number, title, author and specific pages you wish reproduced. Solute vaporization interferences occur when the rate of vaporization of the desolvated aerosol particle is altered by the presence of a concomitant (11,12). A reduced efficiency of free atom formation can result from the formation of a less volatile compound. With this type of interference, a plot of the analyte emission intensity versus the concentration of the concomitant exhibits a linear decrease in intensity followed by a "knee" and a plateau region (11)(12)(13)(14). The "knee" in the curve usually occurs at concentration ratios of the concomitant to the 3 analyte equivalent to the formation of a definite refractory compound. The plateau region indicates that the excess Interferent is readily vaporized from the aerosol droplet.
PLEASE NOTEA solute vaporization interference may also result from the occlusion of the analyte in a refractory matrix of the con comitant which is not completely vaporized In the vaporization-atomlzatlon source (11)(12)(13)(15)(16)(17). With this type of Interference, the analyte emission intensity drops smoothly toward zero with increasing concentrations of the interferent. The types of solute vaporization interferences discussed above may occur in combination for a given pair of a...