二阶导数光谱法快速测定硝酸盐氮和亚硝酸盐氮

王静敏¹, 张景超^1,^*, 张尊举^1,²

Rapid Determination of Nitrate Nitrogen and Nitrite Nitrogen by Second Derivative Spectrophotometry

WANG Jing-min¹, ZHANG Jing-chao^1,^*, ZHANG Zun-ju^1,²

不同浓度的亚硝酸盐氮的吸收光谱