| Based on a principle, which trichloroacetaldehyde in water formed chloral hydrate and then the chloral hydrate with OH- was decomposed into chloroform and formate in alkaline solution, concentration of formic acid was measured by ion chromatography to calculate trichloroacetaldehyde concentration in the water sample. Linearity of calibration curve of the method was good, detection limits 0.007 mg/L, upper limits of concentration 100 mg/L, RSD of replicate samples of standard solution< 3%, spiked recovery 99.7%. The method was suitable for determination of trichloroacetaldehyde in water which did not contain formic acid. |
