共 29 条
[3]
DURST RA, 1978, ION SELECTIVE ELECTR, V1
[4]
COMPOSITION AND STABILITY OF IRON AND COPPER CITRATE COMPLEXES IN AQUEOUS-SOLUTION
[J].
CANADIAN JOURNAL OF CHEMISTRY-REVUE CANADIENNE DE CHIMIE,
1974, 52 (17)
:3119-3124
[10]
ACID PYROPHOSPHATE EXTRACTION OF SOIL FULVIC-ACIDS
[J].
JOURNAL OF SOIL SCIENCE,
1986, 37 (04)
:577-585