2023,52(2)由表4可知:两个浓度的加标回收率分别为97.16%和101.39%,说明该方法满足定量分析的要求。3.2.2检出限以试剂空白溶液连续进行20次吸光度检测,根据吸光度—锑浓度工作曲线计算得到20次锑含量数据,计算得标准偏差为1.2431,以3倍标准偏差作为检出限,结果表明该方法中聚酯切片锑含量的检出限为3.73μg/g。该含量远低于聚酯切片中的锑含量,认为可满足检出要求。4结语(1)通过适合量比的试剂调节,可以建立湿法消解-分光光度法测定聚酯切片中的总锑含量。(2)该试验条件下测试的聚酯切片中总锑含量均接近理论值,是理论添加量的98.32%~101.39%,20次重复试验的相对标准偏差小于10%,数据准确,重复性良好。(3)该试验条件下的检出限为3.73μg/g,加标回收率为97.16%~101.39%,试验的准确性较高。参考文献[1]客绍英,石洪凌,刘冬莲.锑的污染及其毒性效应和生物有效性[J].化学世界,2005,46(6):382-384.[2]姜丽燕,李继文,王川.微波消解-ICP-OES法测定聚酯产品中的锑含量[J].合成纤维工业,2017,40(4):69-73.DeterminationofAntimonyContentinPolyesterChipsbyWetDigestion-SpectrophotometrySHENJie1,WANGChun-yan2,3,LUHai-mei2,LAOLi-Quan2,ZHOUYun2,LICui-ping2(1.ZhejiangTongkunHengtongNewFiberResearchInstitute,Tongxiang314513,Zhejiang,China;2.TongkunGroupZhejiangHengtongChemicalFiberCo.,Ltd.,Tongxiang314513,Zhejiang,China;3.ZhejiangHengchuangAdvancedFunctionalFiberInnovationCenterCo.,Ltd.,Tongxiang,Zhejiang,314500)Abstract:Inordertodeterminetheantimonycontentofpolyesterchips,thepolyesterchipsaredigestedinconcentratedsulfuricacidandhydrogenperoxide,andthemassconcentrationofantimonyinthedigestionsolutionismeasuredbyspectrophotometrytoconfirmtheantimonycontentinpolyesterchips.Theeffectsofthereagentdosagesinthemethodarestudiedtodeterminethebesttestconditionsandthereliabilityisas⁃sessedonthetestmethod.Theresultsshowthatthecontentofantimonyinpolyesterslicescanbedeter⁃minedbywetdigestion-spectrophotometrybychoosingappropriatedoseratio,therelativestandarddevia⁃tionislessthan10%andtherecoveriesofstandardadditionare97.16%~101.39%.Keywords:polyesterchip,antimonycontent,digestion,spectrophotometry■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■...