常州大学学报（自然科学版）2026，Vol.38Issue(1)：35-44,10.DOI:10.3969/j.issn.2095-0411.2026.01.005
双浊点萃取法检测食品与环境水样中的痕量镉
Detection of trace cadmium in food and environmental water samples by dual cloud point extraction method
摘要
Abstract
In this study,2-aza-18-crown-6(DA18C6)and Palmitic Acid(PA)were used as comple-xing agents,and polyoxypropylene ether block copolymer L64(PEO13-PPO30-PEO13)was used as surfactant to enrich the trace Cd2+in the sample in L64 phase.Then,sodium thiosulfate(Na2S2O3)was used as stripping agent to extract Cd2+into the aqueous phase.A highly efficient Selective Double Cloud Point Extraction(SD-CPE)combined with Flame Atomic Absorption Spectroscopy(FAAS)has been established for the analysis of trace Cd2+.Box-Behnken Design(BBD)model combined with Response Surface Methodology(RSM)was used to optimize the SD-CPE conditions.Under the optimal conditions,the detection limit of the method was 0.32 ng/mL,the relative standard deviation was 3.9%,the enrichment factor for Cd2+was 17.21,and the extraction rate was 95.6%.The recovery rates of Cd2+in food and environmental water samples determined by this method were 91.60%—105.00%.The results indicate that this method has a low detection limit and is of great significance for the prevention and control of heavy metal pollution.关键词
双浊点萃取/镉/聚氧丙烯醚嵌段共聚物/2-氮杂-18-冠-6Key words
dual-cloud point extraction/cadmium/polyoxypropylene ether block copolymer/DA18C6分类
资源环境引用本文复制引用
陈慧,张富蓉,王明新..双浊点萃取法检测食品与环境水样中的痕量镉[J].常州大学学报（自然科学版）,2026,38(1):35-44,10.基金项目
江苏省高等学校自然科学研究面上资助项目(22KJD610001) （22KJD610001）
常州大学人才引进资助项目(ZMF20020453). （ZMF20020453）
