QX/T 216-2013 《Determination of formaldehyde in ambient air with MBTH spectrophotometry》 Related products

QX/T 216-2013 "Determination of formaldehyde in the atmosphere, phenolic reagent Spectrophotometric method, spec-trophotometry" specifies a method for the determination of formaldehyde in the atmosphere using phenolic reagent Spectrophotometric method, spec-trophotometry. This standard is applicable to the monitoring and analysis of formaldehyde concentration in the atmospheric environment. The principle is that formaldehyde reacts with phenolic reagents to form colored compounds, and the measurement of its Absorbance at a specified wavelength determines the formaldehyde concentration.