Let's take a look at the role of hydroxylamine hydrochloride. Hydroxylamine hydrochloride is a reducing agent, which can react with some compounds, thus changing its optical properties. In some experiments, the liquid to be tested may be oxidized or reduced. At this time, adding hydroxylamine hydrochloride can eliminate this influence and ensure the accuracy of the measurement results.
Not all experiments need to consider whether the test solution will be oxidized or reduced. The purpose of some experiments is simply to measure the purity of products without considering other factors. In this case, we can directly put the liquid to be measured into the spectrophotometer for measurement without adding hydroxylamine hydrochloride.
In some experiments, the addition of hydroxylamine hydrochloride may introduce other interference factors. For example, in the presence of some substances, hydroxylamine hydrochloride itself may react with some components in the liquid to be measured, resulting in errors in the measurement results. In order to avoid this situation, we can choose not to add hydroxylamine hydrochloride and directly measure the purity of the solution to be tested.
Some experimental samples may be toxic or corrosive, and adding hydroxylamine hydrochloride may increase the risk of experimental operation. In order to ensure the safety of experimental operation, we can choose not to add hydroxylamine hydrochloride for measurement.
For the experiment of measuring the purity of products by spectrophotometer, in some specific cases, hydroxylamine hydrochloride is not needed to be added to the solution to be measured. This depends on many factors, such as the purpose of the experiment, the nature of the liquid to be tested and other interference factors. In the experiment, we need to decide whether to add hydroxylamine hydrochloride for measurement according to the specific situation.