Sulfate Regional Experiment

Eastern United States (EUS). The regionally representative distribution of ambient sulfur oxides and nitrogen oxides over the northeastern United States was first characterized in the late 1970 s from data taken in the Sulfate Regional Experiment (SURE). The results have been reported in several publications (1). Concentra-... 

The Sulfate Regional Experiment Report of Findings, EA-1901(3), Electric Power Research Institute Palo Alto, CA, 1983. 

Blumenthal, D. L. Keifer, W. S. McDonald, J. A. "Aircraft measurements of pollutants and meteorological parameters during the Sulfate Regional Experiment (SURE) program, Electric Power Research Institute Report No. EA-1909, 1981. 

The recent Sulfate Regional Experiment (SURE), promoted by the Electric Power Research Institute, has documented particle air chemistry at a large number of rural and semi rural sites distributed across the continental USA, but with major emphasis on the more polluted northeast. Mueller et. al. (13) have presented frequency distributions of sulfate concentrations measured at SURE sites, and have supported these data with nitrate and ammonium concentrations. From these measurements, distributions of acidic aerosol occurrences can be obtained but as yet are not available. 

Mueller, P. K., G. M. Hidy, T. F. Lavery, K. Warren, and R. L. Baskett (1979). Some early results from the Sulfate Regional Experiment (SURE), Proceedings, Fourth Symposium on Turbulence, Diffusion, and Air Pollution, American Meteorological Society, Boston, 322-329. 

In the late 1970s, the Electric Power Research Institute (EPRI) completed the Sulfate Regional Experiment (SURE), which was designed to create a regional aerometric data base of information on sulfur oxides and related air pollutants in the northeastern states (Mueller and Hidy, 1983). The SURE showed a maximum in regional sulfate concentrations within 100-300 km of major SO2 source areas and that the temporal variability in sulfate concentrations was most strongly influenced by meteorology. 

In another series of experiments, a novel approach to the determination of nucleotide sequence was adopted by A. S. Jones, Stacey, and their co-workers. For example, when calf thymus DNA was treated with mercaptoacetic acid in the presence of zinc chloride and anhydrous sodium sulfate, it yielded aldehydo-apurinic acid bis(carboxymethyl) dithioacetal. When degraded with dilute alkali, this afforded dialyzable fragments, which were separated into at least 20 components. Some were identified, including mono-, di-, and tri-nucleotides, thereby revealing that DNA contain regions of at least three linked pyrimidine nucleotides. The same procedure was applied to the DNA isolated from M. phlei ... 

Sulfate-sulfur. In Recommended Chemical Soil Test Procedures for the North Central Region. NCR Research Publication No. 221 (Revised), Missouri Agricultural Experiment Station, pp. 35 0. 

Fig. 2. Left Experimental profiles of the conventional DANTE sequence (top) and of the DANTE-Z sequence (bottom). The sample used was 5% H2O in D2O with a tiny amount of copper sulfate added (leading to a T of approximately 3 s). The different traces were obtained by shifting the carrier frequency in 50 Hz steps without readjustment of the spectrometer phase. For each experiment, four scans were acquired in order to perform the complete phase cycling of DANTE-Z. Right (a) The conventional H spectrum of a small protein (toxin 7 60 residues) in D2O at 318 K (b) selection of the aromatic region by the conventional DANTE sequence (c) same as (b) using the DANTE-Z procedure. Experiments were performed at 200 MHz using a routine AC200 Bruker spectrometer.

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