Science. 1982 Jul 2;217(4554):51-3. doi: 10.1126/science.217.4554.51.
The relative amounts of primary and secondary sulfates in atmospheric aerosols and precipitation can be estimated from measurements of the stable oxygen isotope ratios. The oxygen-18 content of sulfates formed in power plant stack gases before emission into the atmosphere is significantly higher than that of sulfates formed from sulfur dioxide after emission. Results show that 20 to 30 percent of the sulfates in rain and snow at Argonne, Illinois, are of primary origin.
大气气溶胶和降水中的原生硫酸盐和次生硫酸盐的相对含量可以通过稳定氧同位素比值的测量来估算。在排放到大气中之前，在发电厂烟囱气体中形成的硫酸盐的氧-18含量明显高于排放后由二氧化硫形成的硫酸盐的氧-18含量。结果表明，伊利诺伊州阿贡的雨水和雪中，有 20%至 30%的硫酸盐为原生硫酸盐。
