The method for the simultaneous determination of acetaldehyde, acrolein, and formaldehyde in water using purge and trap coupled with gas chromatography was investigated and optimized to enhance accuracy and efficiency. The experimental conditions, including purge time, temperature, and carrier gas flow rate, were carefully adjusted to ensure optimal performance. The results demonstrated that the developed method is not only simple to implement but also highly sensitive and effective for trace analysis. The detection limits for the target compounds were found to be 0.037 mg/L for acetaldehyde, 0.012 mg/L for acrolein, and 0.0006 mg/L for formaldehyde, which are well below the typical concentration levels found in environmental samples. The relative standard deviation ranged from 3.9% to 15.8%, indicating good precision. Additionally, the recovery rates for real water samples were between 73.0% and 118%, confirming the reliability of the method. This approach meets the requirements specified in the Surface Water Environmental Quality Standard and can be effectively applied in environmental monitoring programs. The study provides a practical and robust analytical technique for the routine analysis of these aldehydes in water samples.
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