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建立了漂浮液滴固化分散液液微萃取(DLLME-SFO)方法,以脂肪酸作为萃取剂,以甲醇作为分散剂,与高效液相色谱联用检测了环境水样中3种烷基苯酚。对影响前处理方法的因素进行了详细考察,在最佳萃取条件(60μL萃取剂辛酸、600μL分散剂甲醇、pH值为2.0~8.0、10 mL水样中加入0.5 g NaCl)下,3种烷基苯酚在20~1 500μg/L范围内具有良好的线性关系,相关系数不小于0.998 5,3种目标化合物的检出限为0.45~0.61μg/L,富集倍数为145~169,实际样品中3个水平的加标回收率为80.1%~109.9%。该方法将脂肪酸作为萃取剂,与HPLC联用实现了烷基苯酚的富集与检测,为环境水样中烷基苯酚的检测提供了对环境友好的前处理新方法。
A method of liquid droplet-assisted liquid-liquid microextraction (DLLME-SFO) was developed. The fatty acids as the extractant and methanol as the dispersant were used to detect the three alkylphenols in the environmental water samples by HPLC. The influencing factors of the pretreatment method were investigated in detail. Under the optimal extraction conditions (60μL extractant octanoic acid, 600μL dispersant methanol, pH value 2.0 ~ 8.0, 10mL water sample added 0.5g NaCl), three alkanes The linear range of phenol was in the range of 20-1 500 μg / L, the correlation coefficient was no less than 0.998, the detection limits of the three compounds ranged from 0.45 to 0.61 μg / L and the enrichment factors were 145 to 169. The actual samples In the three levels of spiked recoveries of 80.1% ~ 109.9%. The method uses fatty acid as an extractant and achieves the enrichment and detection of alkylphenols by using HPLC in combination with HPLC, thereby providing a new environment-friendly pretreatment method for detecting alkylphenol in environmental water samples.