The reaction of aromatic aldehydes with sodium bisulfite was incomplete,so that the results was less than standard values,as a result,the method was not suitable to the analysis of aromatic aldehydes.

• 因芳醛和亚硫酸氢钠反应不完全,使亚硫酸氢钠法测定结果偏低,证明了亚硫酸氢钠法不适用于芳醛的测定。