Abstract
It has been found that determination of the formaldehyde with acetyl aceton can be carried out by heating sample-reagent mixture for 5 minutes at 60°C followed by cooling with running water for 1-2 minutes. This method is very speedy relative to the conventional method which includes 30 minute-incubation at 40°C and another 30 minute-standing at room temperature.
Values obtained by the new procedure satisfactorily correlates with those by the conventional process.
The positive error in the present method caused by methylol compounds contained in the extracts is less than that observed after 30 minute-incubation at 40°C in the conventional method.
It has also been found that 2-3% of dimedone solution is required for the complete removal of formaldehyde if the concentration is more than 1 ppm.
