固相微萃取
山梨酸钾
牡蛎
检出限
分析物
色谱法
化学
钾
样品制备
高效液相色谱法
食品科学
有机化学
气相色谱-质谱法
质谱法
糖
海洋学
地质学
作者
Jinyu Li,Yunjiao Ma,Feng Xiao,Xianbing Xu
摘要
Summary On‐site sample preparation has the advantage of combining sampling and sample preparation into a single step, thereby minimising sources of error, and eliminating the risk of analyte instability. Bubble‐driven solid‐phase microextraction (BD‐SPME) was first proposed as an on‐site pretreatment method. Oyster sauce underwent on‐site pretreatment to measure potassium sorbate levels via high‐performance liquid chromatography with a diode array detector (HPLC‐DAD), obviating the need for stirrers. The high sensitivity of the HPLC determination of potassium sorbate was obtained using BD‐SPME pretreatment with a limit of detection (LOD) of 0.03 mg L −1 and a limit of quantification (LOQ) of 0.10 mg L −1 . The refined technique displayed remarkable linearity from 0.10 to 30.00 mg L −1 , boasting a coefficient of determination R 2 ≥ 0.998. In addition, the recoveries of potassium sorbate in oyster sauce using the method were in the range of 90.8–101.4%. Evidently, BD‐SPME in combination with HPLC‐DAD is a sensitive and promising analysis for on‐site pretreatment.
科研通智能强力驱动
Strongly Powered by AbleSci AI