Excessive absorption of iron by the human body can have an impact on the blood and, in severe cases, damage various organs. So many water quality standards, such as drinking water, surface water, groundwater, electroplating discharge, etc., have imposed restrictions on the content of iron. Detecting iron in water is of great significance for environmental protection and human health.

To eliminate the tedious operation of preparing reagents and testing processes for users, and improve detection efficiency, a method based on ortho phenanthroline spectrophotometry has been developedFerrous (high range) water quality detection reagentThis reagent has the advantages of simple and fast operation, accurate testing, and low cost, which can meet the requirements of batch, rapid, and accurate determination of various water quality.

Ferrous (high range) water quality detection reagentAfter the reaction between ferrous ions and the ortho phenanthroline indicator in the reagent, the solution turns orange. Within a certain concentration range, the depth of the color is directly proportional to the iron content. At a specific wavelength, the total iron content in the water sample can be obtained by measuring the absorbance value of the colorimetric solution.

measuring range

matters needing attention

1. For more accurate testing, the blank value of each new batch of reagents should be measured. The determination of reagent blank is also carried out according to the testing steps, except that the sample is replaced with pure water for testing. Subtract the blank value of the reagent from the final test result;

2. After sample collection, it should be tested as soon as possible to prevent divalent iron ions from being oxidized to trivalent iron ions by oxygen in the air and not detected;

3. If the content is higher than the reagent range, the measured value can only be used to estimate the dilution factor and cannot be used as a test result. After diluting the sample, retest;

4. The pH value of the water sample to be tested is best between 3.0 and 5.0, otherwise it may exceed the buffering capacity of the reagent, resulting in prolonged color development time or no color development. If it is not within this range, it is recommended to use dilute acid or dilute alkali for pre adjustment;

5. When cobalt exceeds 50mg/L, copper exceeds 10mg/L, nickel exceeds 20mg/L, and zinc exceeds 50 times that of iron, interference occurs. Bismuth, cadmium, mercury, molybdenum, and silver can produce turbidity with ferrous reagents;

6. It is recommended to wear gloves when operating this product in a fume hood and keep it out of reach of children. It should not be stored with food, medicine, etc., consumed, or put into a fire.