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Investigation of the reaction of magnesium with p ‐Nitro‐ o ‐carboxylazochromotropic acid and the determination of magnesium in plants and in water
Author(s) -
Gao HongWen,
Yang JiaXiang,
Zhou ZhongZe,
Zhao JianFu
Publication year - 2003
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/pca.690
Subject(s) - chemistry , magnesium , ethylenediamine , nitro , inorganic chemistry , magnesium fluoride , fluoride , nuclear chemistry , organic chemistry , alkyl
The formation of a novel complex between magnesium and p ‐nitro‐ o ‐carboxylazochromotropic acid (NCBAC) has been observed which is sensitive and selective at pH 10.4 in the presence of ethylenediamine and fluoride. The constants of formation of this complex have been determined by a spectral correction technique, and the complexation reaction has been applied to the spectrophotometric determination of trace magnesium in plants and in water with satisfactory results. Copyright © 2003 John Wiley & Sons, Ltd.