Abstract
In recent years, green chemistry has become the main point in global chemistry research. In this research,we use dynamic-LLLME which stress fast、 simple、low-cost and low-pollution technique to concentrate seven aromatic amines(aniline；benzidine；o-Toluidine；4-nitroaniline；4-chloroaniline；4-bromoaniline；3,4-dichloroaniline) in environmental water then separate and determine by high performance liquid chromatography（HPLC）and Photo Diode Array (PDA) detector. Aromatic amines are proven to be carcinogenic, especially benzidine has been regulated as priority pollutant by U.S. Environmental Protection Agency (EPA) . In order to reach low detection limits, we use polyhydric alcohols as extraction solvent and find that different anion from acid affect extraction . This work also makes a detailed research about other factors that mainly influence extraction results, and applies the proposed method to reservoir water 、stream water and river water. Under the optimum experiment conditions, method of detection limits（MDLs） range from 0.1~2.0 μg/L; Good linearity of analytes is achieved in the range of 0.5~500 μg/L with coefficients of determination, r2 > 0.9989; Good reproducibilities of extraction performance are obtained with RSD (%)3.3~8.4 in test water and 3.6~9.2 in environmental water .The spiked relative recoveries of the three real samples are in the range of 93.6 %~102.5 %、86.5 %~105.2 % and 85.5 %~104.8 %, respectively. This reveals the proposed method can successfully apply to the analysis of aromatic amine from environmental water samples.