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Soils Damaged By Acid Rain Begin Comeback

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It’s been a quarter century since government regulations limiting emissions of sulfur and nitrogen oxides from coal-fired power plants began to neutralize the problem of acid rain, but lakes in the northeastern U.S. and eastern Canada have been sluggish to recover.

Scientists have linked the delayed comeback to a lack of acid-buffering calcium in surrounding soils, which continued to acidify despite cuts in pollutants. Now, however, a study shows for the first time that soil acidification has begun to reverse across a broad swath from western Ontario to Maine (Environ. Sci. Technol. 2015, DOI:10.1021/acs.est.5b02904). Researchers hope improvements to forest health and lake water quality will follow.

To read the remainder of the article that originally appeared on the Chemical & Engineering News website Nov. 6. visit: http://cen.acs.org/articles/93/web/2015/11/Soils-Damaged-Acid-Rain-Begin.html

 

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