兒童玩具中內(nèi)分泌干擾物及異噻唑啉酮類物質(zhì)的電化學(xué)及色譜檢測方法研究
[Abstract]:Infant children can breathe, lick and touch toys when they play in life, and take some toxic and harmful substances into the body. In this paper, the toxic and harmful components affecting reproductive development and physical and mental health were studied. (1) the determination of bisphenol A in children's toys by carbon black nano-particle (CBNPs) and ionic liquid (IL) composite modified electrode; (2) the new silane reagent was used to detect endocrine disrupting substances in children's toys by GC-MS/MS, and (3) high performance liquid chromatography (HPLC) was used to detect preservatives in molded clay. It provides some data and information for toy safety evaluation, standard improvement and child health protection. 1. Electrochemical determination of bisphenol A in children's toys with CBNPs/IL/DTAB modified glassy carbon electrode has been applied to the detection of bisphenol A in children's toys by using a rapid, sensitive and miniaturized electrochemical analysis method. Carbon black nanoparticles as modified electrode materials have many advantages, such as low price, good conductivity, strong adsorption ability, large specific surface area and so on. Ionic liquids known as "green solvents" also have unique functions, such as high chemical and thermal stability, low flammability, high ionic conductivity, stable electrochemical window and so on. The introduction of ionic liquids into nanomaterials can combine their superior properties to improve their performance in electrochemistry and sensors. II. The new silane reagent was used for the detection of endocrine disrupting substances in children's toys by GC-MS/MS. As a substitute for bisphenol A (BPA), such as bisphenol S (BPS), bisphenol F (BPF) and bisphenol B (BPB), etc. They have similar structures as BPA, and octylphenol (OP) and nonylphenol (NP) also have endocrine disrupting effects. An interesting new derivative reagent was synthesized for reaction with endocrine disrupting substances, and the derived products were used for GC-MS analysis. The experimental results show that the derivative reagent has many advantages and the detection results are satisfactory. Three Determination of preservative clay in moulding clay by HPLC is a kind of educational toys favored by infants and children. The fact that molded clay products can remain intact for two years or more suggests that some preservatives may have been added to the product, which scientists consider to be sensitized, if added in excess, Children's long-term contact or misuse of food is likely to cause potential health hazards. At present, the limits for isothiazolinone preservatives in EN71-9:2007 "Toy Safety-part 9" organic compounds have been specified. However, the types and contents of preservatives used in moulding clay have not been clearly defined in China. Based on this, an item was established to detect isothiazolinone in clay. The method of chromatographic detection was established and the experimental conditions were optimized. The results showed that the experimental method was simple and the analysis data was accurate. It provides some data and experience for establishing this kind of standard detection method in our country.
【學(xué)位授予單位】:上海師范大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TS958.07;O657
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