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sunxianglang: ½ð±Ò+5, ¡ï¡ï¡ïºÜÓаïÖú 2012-12-13 23:14:27
http://www.nature.com/nmeth/journal/v2/n3/abs/nmeth740.html
Second derivative ultraviolet spectroscopy and sulfamic acid method for determination of nitrates in water. J. Assoc. Analyt. Chem. 68, 962-964
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