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新型毒品犯罪已成为全球公共安全的突出问题。芬太尼类化合物作为一种新型毒品,在全球范围内制造、走私、滥用等方面问题日益严重。基于此,综述了芬太尼类化合物的种类和结构特点、体内代谢及毒性、前处理方法、检测方法,并对芬太尼类化合物未来检测的发展趋势进行了展望(引用文献34篇)。 相似文献
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采用固相萃取净化-超高效液相色谱-串联质谱法(UPLC-MS/MS)测定婴幼儿配方乳粉中丙烯酰胺的含量。乳粉用水复溶后,用乙腈沉淀蛋白,MCX固相萃取柱净化,HSS T3色谱柱分离,甲醇-0.1%甲酸水(5∶95, V/V)等度洗脱,ESI+模式下,多反应监测模式(MRM)分析,内标法定量。结果表明,丙烯酰胺在5~200 ng/mL范围内线性关系良好,相关系数R2=0.9997。选用婴幼儿配方乳粉为基质,在10, 50,100μg/kg 3个含量水平进行加标回收实验,回收率在88.4%~104.6%,相对标准偏差在3.4%~5.8%。称样量为1 g时,方法检出限为6μg/kg。本方法适用于婴幼儿乳粉中丙烯酰胺的快速测定。 相似文献
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超高效液相色谱-四极杆/静电场轨道阱高分辨质谱法测定奶粉中10种N-亚硝胺类化合物 总被引:1,自引:0,他引:1
样品用水复原,乙腈提取,PRiME HLB固相萃取柱快速净化,经EclipsePlus C18 RRHD(150 mm×3.0 mm,1.8μm)色谱柱分离,以平行反应监测(PRM)方式在ESI+模式下检测,外标法定量.10种N-亚硝胺类化合物在2.0~100 ng/mL范围内线性良好,相关系数(R2)均大于0.992,方法检出限在1.0~5.0μg/kg范围内,在15,30,75μg/kg3个添加水平下回收率范围为75.5%~121.7%,相对标准偏差(RSD)在2.1% ~ 9.2%之间,并从奶粉样品中检出2种亚硝胺类化合物. 相似文献
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Modulational Instability of Dipolar Bose-Einstein Condensates in Optical Lattices with Three-Body Interactions 下载免费PDF全文
Motivated by the recent experiment [Nature 530(2016) 194] in which a stable droplet in a dipolar quantum gas has been created by the interaction-induced instability, we focus on the modulation instability of an optically-trapped dipolar Bose-Einstein condensate with three-body interaction. Within the mean-field level, we analytically solve the discrete cubic-quintic Gross-Pitaevskii equation with dipole-dipole interaction loaded into a deep optical lattice and show how combined effects of the three-body interaction and dipole-dipole interaction on the condition of modulational instability. Our results show that the interplay of the three-body interaction and dipole-dipole interaction can dramatically change the modulation instability condition compared with the ordinary Gross-Pitaevskii equation. We believe that the predicted results in this work can be useful for the future possible experiment of loading a Bose-Einstein condensate of ~(164)Dy atoms with strong magnetic dipole-dipole interaction into an optical lattice. 相似文献
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