WHC is the largest indicator plant in China
PH indicator,acik-base indicator,complexometric indicator,redox indicator,precipitimetric indicator,indicator
Product Category
Organic Indicator
Biological Dye
chemical net
News and Knowledge

O-phenanthroline method for determining iron

A method of determining Fe from plant materials using O-phenanthroline is described.The absorbance of the Fe(C12H8N2) 3++ complex from pure iron solutions or from extracts of different plant materials did not vary over a pH range of 2 to 5. Maximum absorbance was obtained after a period of 2 hours of color development and was constant for at least 24 hours. The standard curves prepared by a procedure described elsewhere6 were quite similar to the ones obtained by the method described in this paper.A comparison of 3 methods of extracting Fe from the ash indicated that HCl + H2O2 gave higher results than either of the other methods. The Fe content obtained by this procedure was very similar to the values obtained by AAS.A high percentage of the Fe added to plant tissues and peats was recovered when extracted by HCl + H2O2 and that the reproducibility was good. This is recommended as a simple and satisfactory procedure for accurate determination of Fe.

when you want to buy 1,10-Phenanthroline,please contact us


ph indicator, redox indicator, complexometric indicator ,precipitimetric indicator. 1,10-phenanthroline, phenolphthalein, thymol phenolphthalein, thymol blue,crystal violet, methylene blue, xylenol orange, bromocresol purple,dimethylglyoxime, sodium diethyldithiocarbamate, brilliant green, basic fuchsin