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陈秋生,梁淑轩,李科,孙汉文
Comparison of Several Extraction Methods for the Spectrophotometric Determination of Nitrate and Nitrite in Vegetables
CHEN Qiu-sheng,LIANG Shu-xuan,LI Ke,SUN Han-wen
河北大学学报(自然科学版) . 2007, (2): 174 -178 .  DOI: 10.3969/j.issn.1000-1565.2007.02.018