固相萃取/液相色谱-串联质谱法测定地表水中10种抗病毒药物

建立了地表水中伐昔洛韦、阿巴卡韦、恩替卡韦、齐多夫定、奈韦拉平、更昔洛韦、替比夫定、拉米夫定、阿昔洛韦和金刚烷胺10种抗病毒药物的超高效液相色谱-串联质谱联用检测方法。水样经ISOLUTE ENV+固相萃取柱富集净化后,以Waters ACQUITY UPLCTMBEH C18色谱柱(100 mm×2.1 mm i.d.,1.7μm)分离,0.1%甲酸-乙腈为流动相,在电喷雾离子源正离子模式下采用质谱多反应监测(MRM)进行测定。10种目标化合物的线性范围为0.5~200 ng/L,相关系数r20.993;方法的定量下限为0.2~5.0 ng/L,3个加标水平下的平均回收率为70.0%~104.0%,相对标准偏差(RSD)小于15%。该方法可用于地表水等相关水体中目标化合物的分析。     

加速溶剂萃取/气相色谱-三重四极杆串联质谱法测定纺织品中24种多环芳烃

建立了加速溶剂萃取/气相色谱-三重四极杆串联质谱(ASE/GC-MS/MS)同时测定纺织品中24种多环芳烃(PAHs)的方法。样品经丙酮加速溶剂萃取,旋蒸浓缩后采用DB-35色谱柱程序升温分离,选择多反应监测模式(MRM)采集,外标法定量。结果表明,在一定浓度范围内多环芳烃的峰面积与质量浓度呈良好的线性关系,相关系数(r~2)均大于0.994,方法检出限为0.000 3~0.03 mg/kg,方法定量下限为0.001~0.10 mg/kg,加标回收率为80.3%~103%,相对标准偏差(RSD)为1.3%~9.2%。该方法灵敏、准确可靠,能满足纺织品中24种多环芳烃的测试要求。     

A Biodegradable Polydopamine‐Derived Electrode Material for High‐Capacity and Long‐Life Lithium‐Ion and Sodium‐Ion Batteries

Polydopamine (PDA), which is biodegradable and is derived from naturally occurring products, can be employed as an electrode material, wherein controllable partial oxidization plays a key role in balancing the proportion of redox‐active carbonyl groups and the structural stability and conductivity. Unexpectedly, the optimized PDA derivative endows lithium‐ion batteries (LIBs) or sodium‐ion batteries (SIBs) with superior electrochemical performances, including high capacities (1818 mAh g^?1 for LIBs and 500 mAh g^?1 for SIBs) and good stable cyclabilities (93 % capacity retention after 580 cycles for LIBs; 100 % capacity retention after 1024 cycles for SIBs), which are much better than those of their counterparts with conventional binders.     

膜蒸馏-结晶耦合技术及其在卤水分离纯化的应用前景

膜蒸馏-结晶耦合技术作为一种新型的分离技术有着分离效率高、环保节能和占用空间小等特点,因此有着广阔的应用 领域。综述了膜蒸馏-结晶耦合技术,及其分离原理、特点以及优势,概述了膜蒸馏-结晶在国内外的发展和应用状况,重点介绍膜蒸馏-结晶耦合技术在无机盐溶液方面的研究及应用。并对膜蒸馏-结晶耦合技术在卤水分离方面的应用前景做了展望。     

Legendre spectral method for solving mixed boundary value problems on rectangle

In this paper, we develop a spectral method for mixed inhomogeneous Dirichlet/Neumann/Robin boundary value problems defined on rectangle. Some results on two‐dimensional Legendre approximation in Jacobi‐weighted Sobolev space are established. As examples of applications, spectral schemes are provided for two model problems with mixed inhomogeneous boundary conditions. The spectral accuracy in space of proposed algorithms are proved. Efficient implementations are presented. Numerical results demonstrate their high accuracy and confirm the theoretical analysis well. Copyright © 2016 John Wiley & Sons, Ltd.     

激光差拍波等离子体加速装置中约束磁场的计算研究

通过对等离子体发生器建立三维模型,计算得到磁场在该装置中的分布情况。所得结果与实际测量基本一致,从而说明所建模型的合理性。通过调节一些参数,对该模型进一步搞清了导致等离子体发生器中真实磁场较实验设计要求偏低的主要原因,并提出了相应的改进方案。     

回旋管双阳极磁控注入电子枪的设计

根据回旋管对电子枪的要求,设计了该双阳极磁控注入电子枪。给出了电极形状、电子轨迹与电子注参量。这种电子枪具有速度零散小、层流性较好、体积小等特点。     

三硼酸铯和硼酸铯锂晶体的晶格振动光谱研究

本文对新型非线性光学晶体三硼酸铯（ＣｓＢ３Ｏ５∶ＣＢＯ）和硼酸铯锂（ＣｓＬｉＢ６Ｏ１０∶ＣＬＢＯ）进行了晶格振动光谱研究。首先对两种晶体的基本晶格振动模进行了对称性分类,记录了两种晶体低温下的拉曼光谱和室温下的红外反射光谱,对晶体的晶格振动模进行了认定,将振动模归属于平面六元环（Ｂ３Ｏ６）和四面体（ＢＯ４）。然后比较了ＣＢＯ,ＣＬＢＯ和ＬＢＯ（ＬｉＢ３Ｏ５）三种晶体的晶格振动光谱,讨论了阳离子对振动光谱的影响。另外,还讨论了硼酸盐晶体晶格振动模ＬＯ ＴＯ分裂的大小与晶体非线性光学系数之间的关系。     

激光拉曼光谱在玉石鉴定中的应用

本文提出玉石品种鉴定的新方法———激光拉曼光谱法。测试了一系列玉石的标准拉曼谱