电子电气产品中四溴双酚A的测定 气相色谱仪

                   Tengzhou City Xiangying Analysis Technology Co., Ltd. with N, o-bis (trimethyl silicon alkyl) trifluoroacetamide (BSTFA) as a derivatization reagent, the microwave - assisted extraction (MAE) - derived gas XiangyingGC7990plus phase chromatography - electron capture detector (7990GC-ECD) determination of tetrabromo bisphenol A in electrical and electronic products. Using V (toluene): =10 (methanol) V: 1 microwave assisted extraction of electrical and electronic samples, using hexane precipitation in the extraction of polymer, after purification, the extraction liquid was derived from the reaction, using ECD detector for quantitative determination. The pretreatment conditions such as the derivatization time, derivatization temperature, the dosage of derivatization reagent and the amount of precipitation reagent were optimized, and the linearity, recovery, precision and other tests were carried out. The results show that the linear range is mg/L 0.005~5, the correlation coefficient is 0.9985, and the detection limit of the method is 0.02 mg/kg. The precision and recovery rate of the sample was added in the sample. The recovery rate was four. The recovery rate was 81.7%~110%, and the relative standard deviation RSD (n=7) was less than 7.2%. The proposed method can be applied to the detection of four bromine bisphenol A in electronic and electrical products.