Formaldehyde is an extremely important industrial raw material duo to its chemical activity, high purity and relative cheapness. On the other hand, formaldehyde-containing construction and. furnishing materials are extensively used in modern building and furniture. Owing to its high toxicity and possible carcinogenic properties, formaldehyde is now recognized as one of the most important pollutants in both workplace and ambient atmosphere. Determination of formaldehyde plays an important role in many areas....