Abstract:
As a kind of typical environmental endocrine-disrupting chemicals, alkylphenols can exist stably in the water environment for a long time, and have become great-concern substances by environmental scholars at home and abroad. On the basis of recent literature on the pollution of alkylphenols in environmental water, the principal pretreatment techniques were reviewed, of which commonly used in the analysis and detection of alkylphenol in environmental water were emphatically expounded, including liquid-liquid extraction (LLE), solid-phase extraction (SPE), solid phase micro-extraction (SPME), and so on. The principle, characteristics, influencing factors and practical application of the above methods were introduced. The results showed: 1) Alkylphenols were widely detected in various environmental water at home and abroad, and concentrations were generally between undetected (ND) and several thousand ng/L, which were easy to be adsorbed on suspended solids or colloidal particles in water. It was urgent to establish reliable, efficient and fast pretreatment techniques to lay a good foundation for the accurate determination and quantitative analysis of alkylphenols in water. 2) Compared with SPME and stir bar adsorption extraction, LLE and SPE were superior in the aspect of recovery rate, precision and stability, and both had been applied in the national standard analysis methods of alkylphenols in environmental water in many countries. In the future, research should be strengthened on the extraction capacity and selectivity of fillers, the durability of coatings, and the combination of multiple extraction techniques, to establish rapid, efficient, miniaturized, solvent-free or less solvation, environmentally friendly and automated pretreatment techniques. Also, the management of alkylphenols should be strengthened, being integrated into the water quality standards, discharge standards, etc.