UPLC-FLD检测玩具涂料中的多环芳烃
UPLC-FLD衍生基于超高效液相色谱荧光检测器(UPLC-FLD)建立了一种快速,准确定量白酒中尿素的方法.该法中将白酒样品用9-羟基占吨醇在酸性,避光条件下衍生,采用C_(18)反相色谱柱分离目标物,流动相为乙腈和0.02 mol/L乙酸钠溶液(pH 7.2),后经FLD检测分析,检测器波长为λex=213 nm,λem=308 nm,25min即可完成...
(UPLC-FLD)方法.主要研究结果如下:1.建立并优化了液-液萃取法同时提取猪肉,禽肉和禽蛋中阿苯达唑,阿苯达唑砜,阿苯达唑亚砜和阿苯达唑-2-氨基砜残留.猪肉和禽肉中阿苯达唑及其三种代谢产物残留用乙酸乙酯萃取,禽蛋中阿苯达唑及其三种代谢产物残留用0.2%甲酸-乙腈萃取,氮气吹干后流动相复溶,用乙腈饱和的正...
Therefore, the use of both chromatographic methods, especially UPLC-FLD, to determine MDA would be more advisable than the classic TBARS method to avoid overestimation in meat and processed meat products. 展开 关键词: Absorbance Fluorescence Lipid oxidation TBARS 2-Thiobarbituric acid derivatization ...
inhumanplasmabysimpleUPLC–FLDmethod:Applicationin clinicalstudies MingmingYu c ,HazemE.Hassan a,e ,AhmedIbrahim a ,KennethS.Bauer b , DeannaL.Kelly d ,JiaBeiWang a,∗ a DepartmentofPharmaceuticalSciences,SchoolofPharmacy,UniversityofMaryland,Baltimore,MD21201,USA b DepartmentofPharmacyPracticeandScie...
【摘要】建立了液液萃取-超高效液相色谱串联荧光检测器(LLE-UPLC-FLD)快速分离和测定橄榄油中羟基酪醇和酪醇含量的方法.橄榄油样品经乙醇提取后,以0.2% (v/v)甲酸乙腈溶液和0.2% (v/v)甲酸水为流动相,梯度洗脱,采用BEH(50 mm × 1.0 mm,1.7 μm)色谱柱,柱温为35℃,流速为0.15 mL/min,进样量为2.0 μ...
应用UPLC-FLD技术检测食用菌荧光增白剂 王天娇，吴平谷，胡争艳，王立媛，倪竹南，汤鋈 浙江省疾病预防控制中心，浙江杭州310051 摘要：目的应用超高效液相色谱-荧光检测（U P L C-F L D)技术检测食用菌中多种荧光增白剂。方法从超市、农贸 市场和网络商店购买蘑菇、杏鲍菇和金针菇等新鲜散装菌菇150份，样品粉碎...
The NP-HPLC/FLD and RP-UPLC-ESI/MS techniques as well as fluorescence spectroscopy turned out to be very useful tools not only to estimate tocopherol contents, but also to detect contaminants in coffee brew tocopherol extracts. In all analysed coffee brew samples, only ±- and - T were ...
荧光增白剂目的建立一种应用超高效液相色谱仪(UPLC)-FLD/PDA双检测器串联快速测定纸质食品包装材料中11种荧光增白剂的新型检测方法.方法样品经40%乙腈水溶液提取后,采用Waters ACQUITY UPLC BEH C_(18)柱(1.7μm,2.1 mm×100 mm)分离,流动相梯度洗脱,荧光检测器(FLD)激发波长350nm,发射波长430nm,二极管阵列...
荧光增白剂目的 应用超高效液相色谱-荧光检测(UPLC-FLD)技术检测食用菌中多种荧光增白剂.方法 从超市, 农贸市场和网络商店购买蘑菇, 杏鲍菇和金针菇等新鲜散装菌菇150份,样品粉碎后采用水浴加热超声法提取,采用ACQUITY UPLC BEH C18色谱柱(1.7μm,2.1 mm×100 mm)进行分离,流动相为乙腈/甲醇混合溶液和含20 ...