2014，33(4):517－522．［9］赵合琴，郑先君，魏丽芳，等．X射线荧光光谱分析中样品制备方法评述［J］．河南化工，2006，23(10):8－11．［10］刘江斌，党亮，殷桃刚．粉末压片—X射线荧光光谱分析中区域地球化学样品制备和标准曲线建立的几点认识［J］．甘肃地质，2015，24(4):84－87．DeterminationoftitaniumdioxidecontentinpolyesterchipsbyenergyX-rayfluorescencespectrometryGUYufeng，LIDingsong，ZHANGYe，DONGZihao，YANGDongsheng(AnalysisandTestingCenterofSINOPECYizhengChemicalFiberCo．，Ltd．，Yizheng211900)Abstract:Thecontentoftitaniumdioxideinpolyethyleneterephthalate(PET)chipswasdeterminedbyenergyX-rayfluores-cencespectrometry．Thetestconditionssuchasinstrumentparametersandsampletreatmentmethodswereexplored．Theresultsshowedthatthesuitableinstrumentparametersweretestvoltage12kV，filterAl-50，airatmosphere，testcurrent833μA，andthefavorablesampletreatmentmethodwascrushingandtableting，comprisingsievingthecrushedsamplewithasamplesievewithaporesizeof350μmandthenweighting5gsampletobetabletedandmaintainedunderapressureof40MPafor2min，whenthetitaniumdioxidecontentinPETchipswasdeterminedwithanenergyX-rayfluorescencespectrophotometer;andthede-terminationoftitaniumdioxidecontentinPETchipsbyenergyX-rayfluorescencespectrometryhadgoodrepeatability，highaccu-racy，simpleoperationandhightestefficiencywiththerelativestandarddeviationlessthan2．0%，theabsolutevalueofthedifferencefromthestandardvaluelessthan0．1%and15-mintimeconsuming，andwassaferandmoreenvironmentallyfriendlyduetodemandingnochemicalreagentinthetestprocess．Keywords:polyethyleneterephthalate;X-rayfluorescencespectrometry;titaniumdioxide;test国内外动态2022年我国聚酰胺66切片的进口概况据海关统计，2022年我国聚酰胺66(PA66)切片的进口量为198．5kt，同比下降21．57%;进口金额为83587．69万美元，同比下降14．82%;进口单价为4210．69美元/t，同比增长8．85%。进口主要来自美国、韩国、日本、泰国和新加坡，其中来自美国的进口量为54．5kt，占总进口量的27．46%，同比...
