Used In The Food And Environmental Samples In Anion Ion Chromatography And The Analysis Of The Detection And Identification Of Estrogen

Ion chromatograph(IC) was introduced to examine samples for its fast, effective, stable, selective and environmentally friendly analytical advantages in process for analysis. In connection with hot topic on environment monitoring and food safety in daily life, new methods were developed to solve analysis difficulties, including anions in environment water, swill oil sample and estrogen in dairy products and so on. This work focused on four parts.1The Influence of Sandstorm on the Anions in Rainwater of Qingdao by Ion ChromatographyIon chromatography has been widely used in environmental monitoring in recent years. This study is based on significant changes in the anion components and concentration after abnormal weather. Results showed that sandstorm influenced the water soluble ionic concentration in the atmosphere and air quality of Qingdao obviously, and this essay can provide valuable information to environmental monitoring department.2Ion Chromatography Method to Identify Illegal Cooking OilA simple anion-exchange chromatography method was established to determine illegal cooking oil which is a considerable threat to food safety and difficult to identify for its complexity. Illegal cooking oil contains larger quantities of anions and the anions components and concentration can be treated as significant sign for the identification of qualified oil. The method is simple, easy to operate and suitable for multi-component analysis simultaneously.3Determination of Fluoride in the Aquatic Product by Ion ChromatographyFluoride content in the food was paid much attention for food safety nowadays. The determination of fluoride by Ion Chromatography owned these outstanding advantages of rapid, sensitive, stable and selective. In this work, IC method was established by optimizing the pretreatment procedure to determine fluoride in carp, clams, cod fish and other aquatic product.4Determination of Bisphenol A in Dairy Products Using Solid Phase Extraction Followed by Ion Chromatography with Constant Potential DetectionEstrogen was examined mainly by highly effective liquid phase chromatography (HPLC) and gas phase chromatography (GC). Comparatively speaking, estrogen separation with IC method is low in instrument expenditure, friendly to environment and easy to operate. In this paper, In addition, the performance of C18, and graphene (G) as SPE sorbents were evaluated, respectively. G showed higher extraction efficiency and was chosen as the adsorbent for BPA extraction from dairy samples finally. BPA exists as anions under alkaline conditions and can be detected with electrochemical method for the electrochemical activity characteristics. This method has been successfully employed to analyze BPA in dairy products.