@article{schlesinger_ion_1988,
	title = {Ion and sulfate-isotope ratios in arid soils subject to wind erosion in the southwestern {USA}},
	volume = {52},
	abstract = {Our objective was to evaluate the potential for arid-land soil dusts to contribute significantly to the content of SO$_{\textrm{4}}$$^{\textrm{2-}}$ and other ions in precipitation.  Soil samples collected at 102 location throughout southwestern USA deserts were extracted with distilled water and analyzed for major ionic constituents and the stable isotope ratios ($^{\textrm{34}}$S/$^{\textrm{32}}$S) in soluble sulfate.  Most samples were dominated by Ca$^{\textrm{2+}}$, and HCO$_{\textrm{3}}$$^{\textrm{-}}$, and were undersaturated with respect to gypsum.  Only a weak correlation was found between Ca$^{\textrm{2+}}$ and SO$_{\textrm{4}}$$^{\textrm{2-}}$ in samples from upland sites.  Median 34 S of soil SO4 was +6.2\% compared to +3.9\% reported for precipitation.  However, the median ratios for CA/SO4 (12.00) and Mg/SO4 (1.84) in soil extracts were much larger than the same ratios in precipitation, suggesting that wind erosion of undisturbed desert soils is not a major source of the SO4 in precipitation.  Calcite aerosols from desert soils may act to neutralize acid rain in the western USA.},
	journal = {Soil Science Society of America Journal},
	author = {Schlesinger, W.H. and Peterjohn, W.T.},
	year = {1988},
	keywords = {JRN, stable isotopes}
}

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