4Deniz Cemgil Arikan, Ayhan Coskun, Ali Ozer, et al.Plasma selenium,zinc,copper and lipid levels in postmenopausal turkish women and theirrelation with osteoporosis[J].Biol Trace Elem Res,2011, 144:407.
6Hilal N, Kim G J, Somerfield C. Boron removal from saline wa- ter: a comprehensive review[ J]. Desalination, 2011,273:23 -35.
7WHO. Guidelines for drinking-water quality the forth edition [S]. Geneva: WHO, 2011.
8EPA. 2012 edition of the drinking water standards and health ad- visories [S]. EPA 822 - S - 12 -001, 2012, Office of Water U.S. Environmental Protection Agency, Washington, DC.