共查询到17条相似文献,搜索用时 78 毫秒
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气相色谱法测定饼干中的抗氧化剂BHA、BHT与TBHQ 总被引:1,自引:0,他引:1
建立了气相色谱法同时测定饼干中的3种抗氧化剂丁基羟基茴香醚(BHA)、二丁基羟基甲苯(B肿)和特丁基对苯二酚(TBHQ)含量的方法。样品采用无水乙醇提取,经净化、离心后直接进样测定。试验得出方法最低检出限BHA和BHT为1.0mg/kg,TBHQ为2.0mg/kg,3种抗氧化剂加标回收率在86.70%-103.02%之间,相对偏差均小于3%,线性范围在2μg/mL-200μg/mL之间,相关系数均大于0.999。该方法简便、快速、稳定、可靠,适用于饼干中BHA、BHT和TBHQ含量的同时快速检测。 相似文献
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建立了凝胶渗透色谱-气相色谱法测定油炸食品中丁基羟基茴香醚(BHA)和二丁基羟基甲苯(BHT)两种抗氧化剂。采用乙酸乙酯-环己烷(体积比为1∶1)溶液提取样品中BHA和BHT。提取液经凝胶渗透色谱(GPC)净化。采用配有FID检测器的气相色谱进行测定。方法准确度高、稳定性好。加标回收率为85.7%~94.0%。BHA和BHT检出限为0.002 mg/m L。BHA和BHT在5 mg/L~100 mg/L时,线性相关系数在0.999 6以上。 相似文献
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建立了食用植物油中抗氧化剂BHA、BHT、TBHQ同时测定的凝胶渗透色谱-气相色谱方法,3种抗氧化剂在实际样品中的加标回收率均在88.1%~98.0%之间,最低检出限为BHA 1.4 mg/kg,BHT 1.7 mg/kg,TBHQ 2.0 mg/kg.该方法简便、快速,可靠,对市场抽取的植物油样品进行了检测,效果较好. 相似文献
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建立了同时测定特丁基对苯二酚(TBHQ)、丁基羟基茴香醚(BHA)和二丁基羟基对甲酚(BHT)的高效液相色谱法.考察了流动相组成、柱温等因素对分析效率的影响.样品经甲醇提取后,以E-clipse plus C18 (250 mm×4.6 mm,5 μm)色谱柱为分析柱,0.02 mmol/L乙酸铵水溶液-甲醇为流动相,线性梯度淋洗,紫外二极管阵列检测器检测,波长280 nm.结果表明:TBHQ、BHA与BHT在0.5~20 mg/L范围内有良好的线性关系,方法的检出限(S/N=3)分别为0.03,0.03和0.05 mg/kg,加标回收率为83.45%~108.42%,相对标准偏差不大于12.79%. 相似文献
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目的:建立测定食品中抗氧化剂叔丁基羟基茴香醚(BHA)和2,6- 二叔丁基羟基甲苯(BHT)加压溶剂萃取-高效液相色谱法(PSE-HPLC 法)。方法:采用正交试验对影响PSE 萃取效率的温度、压力、萃取溶剂、萃取时间进行优化,联合HPLC 进行测定,并确定分别以BHA 提取量、BHT 提取量以及总量为评价指标的最优条件。结果:PSE-HPLC 法测定BHT 和BHA 的相对标准偏差(RSD)为0.5%~3.1%,并且在1.0~200.0μg/mL 范围内色谱峰面积与组分质量浓度均有很好的线性相关性(r ≥ 0.9997),检出限为0.05μg/mL,在最优条件下的回收率为92.60%~97.80%。结论:PSE-HPLC 法简便、快速、效率高,方法的重现性、线性相关性以及检出限理想,适用于食品中BHT 和BHA 含量及两者总量的同时快速检测。 相似文献
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《Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment》2013,30(5):665-673
The synthetic phenolic antioxidants butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT) and tert-butyl hydroquinone (TBHQ) were pre-concentrated by stir-bar sorptive extraction and thermally desorbed (SBSE-TD) before analysis by GC-MS. Several parameters affecting the derivatisation step and both SBSE extraction and thermal desorption were carefully optimised. When the analyses of BHA and TBHQ in their acetylated, silylated and underivatised forms were compared, the best results were obtained when the in-situ derivatisation procedure with acetic anhydride was employed. Quantification was carried out using carvacrol as the internal standard, providing quantification limits of between 0.11 and 0.15 ng ml?1, depending on the compound. Recovery assays for samples spiked at two concentration levels, 1 and 5 ng ml?1, provided recoveries in the 81–117% range. The proposed method was applied in the analysis canned soft drinks and the analytes were found in five of the 10 samples analysed. 相似文献
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油脂及其制品中BHA、BHT、PG和TBHQ快速测定方法的研究 总被引:21,自引:0,他引:21
研究了采用高效液相色谱仪同时测定油脂及食品中BHA、BHT、PG、TBHQ的检测方法。样品经甲醇提取、过滤后即可直接测定。检测波长 ,2 80nm ;流动相 ,V(甲醇 )∶V(质量分数 1%乙酸 ) =40∶60 ;梯度 ,40 %~ 10 0 %甲醇 /7 5min ,10 0 %甲醇保持 4 5min。 4种组分的回收率在 85 8%~ 10 1 5 %之间 ,相对标准偏差 (RSD) <5 5 4%。该法简单、快速、准确 ,可用于油脂及其制品中BHA、BHT、PG和TBHQ的日常检测。 相似文献
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Rapid micropreparation procedure for the gas chromatographic-mass spectrometric determination of BHT, BHA and TBHQ in edible oils 总被引:1,自引:0,他引:1
A rapid, accurate and organic solvent saving procedure has been developed for the GC/MS determination of three phenolic antioxidants butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA) and butyl hydroquinone (TBHQ) in vegetable oils. The method involves two-step microextraction and a centrifugal procedure in a 2 mL autosampler vial, consuming only 50 mg sample and total 1 mL acetonitrile. Recoveries of the phenolic antioxidants when spiked to soya bean oil, peanut oil and cereal cooking oil at 50, 200 and 250 mg/kg, respectively were in the ranges 95.6-104.3% for BHT, 99.7-107.5% for BHA and 93.6-103.8% for TBHQ with the relative standard deviation (RSD) were less than 3% for their independent measurements. The developed method was repeatable and could be applied to determine trace amounts of phenolic antioxidants in vegetable oils. 相似文献