微量进样火焰原子吸收光谱法测定血浆,红细胞中铜,铁和锌

本文叙述了在国产ＷＹＸ－４０２型原子吸收分光光度计上采用微量增样技术，用火焰原子吸收光谱法测定血浆，红细胞中铜，铁和锌的含量，获得了与常规法相同的灵敏度。血浆中铜，铁和锌的平均回收率分别为１０１．０％，１０３．０％，１００．８％。相对标准偏差分别为１．２５％，１．４４％，３．１４％。红细胞中铜，铁和锌的平均回收率分别为１０２．５％，１０４．９％，９７．９％，相对标准偏差分别为３．４％．１４８％．３     

波长色散X射线荧光光谱法测定黄金饰品含金量

本文提出应用波长色散Ｘ射线荧光光谱仪测定黄金饰品含金量的方法，本法对原有样品盒进行了改造，增设特制窗口和采取样品固定等措施，以系列参考标样建立校准曲线，用经验系数法校正基体效应。比例模拟法校正含量。９个参考标样和１６个金标牌的测定结果表明，在含金量为３７．５０％－９９．９９％的范围内，方法的准确度好：含金量在９９．９９％－９８．９８％范围时，误差为０．０３％－０．１２％，在９８．９８％－３７．５０％范围时，误差为０．０１％－０．５２％，选用含金量不同的５个参考标样为代表，以０．７和１．４的模拟比例，经不同时间多次测定进行统计，相对标准偏差为０．０５％－０．５０％，说明方法的精密度好，本法操作方便，时样品无破坏     

多波长K系数法测定克感敏片的含量

采用多波长Ｋ系数法可同时测定克感敏片中非那西丁，氨基比林和咖啡因的含量，结果准确，方法快速。其平均回收率和相对标准偏差分别为９９．９１％，０．４１％，１００．１％，０．２９％；１００．１％，０．５６％。     

火焰原子吸收光谱法测定磁化杯中铅、镉和铁

本文研究了火焰原子吸收光谱法测定磁化杯陶瓷内胆中Ｐｈ、Ｃｄ和Ｆｅ含量的方法。样品经粉碎，用硝酸－高氯酸混合液进行消解后测定。本法灵敏度高，干扰少，简单，快速，具有良好的精密度和准确度，其相对标准偏差分别为Ｐｂ３．９９％，Ｃｄ１０．７％，Ｆｅ０．９％。回收率Ｐｂ１００．６１％，Ｃｄ１０１．１８％，Ｆｅ１０２．４％。     

火焰原子吸收法测定茜素中的K、Na、Ca

本文对茜素中微量元素钾、钠、钙的火焰原子吸收法的测定进行了研究，结果表明：方法简单，具有很好的精密度和准确度。钾、钠、钙的相对标准偏差分别为：４．４％、２．５％和３．７％。回收率分别为９７．５％，９８．３％和９８．１％。     

盐酸环丙沙星含量测定方法的研究

本文介绍了盐酸环丙沙星含量测定的离子选择电极法，紫外分光光度法和格兰线性滴定三种不同方法。用于原料药回收率的测定分别为９９．４％，９９．６７％和９９．５％；用于片剂回收率测定分别为９８．８５％，９８．８４％和９８．７３％。结果基本相同，与非水滴定法相比具有测试方便、快速等优点。     

ICP—AES法测定儿童血液中的Zn,Ca,Fe,Cu和Mg

本文研究了全血中锌，钙，铁，铜，镁微量元素的电感耦合等离子体发射光谱法的测定，方法简便，具有良好的精密度和准确度，相对标准偏差分别为Ｚｎ１．６％，Ｃａ１．４％，Ｆｅ１．１％，Ｃｕ２．１％，Ｍｇ１．１％回收率在９５％－１０５％之间。     

火焰原子吸收法同时测定地质样品中金和银

二氯化锡还原，二氯化汞共沉淀，火焰原子吸收法同时测定地质样品中金和银。对于原矿和尾矿样品，金含量为５．１５μｇ／ｇ，４．４５μｇ／ｇ和０．５４μｇ／ｇ时，相对标准偏差分别为６．２％，３．４％和４．１％。银含量为９．７８μｇ／ｇ和１．２２μｇ／ｇ时，相对标准偏差分别为４．４％，３．５％和１２．５％。金的分析结果与参考值基本一致。金和银的回收率分别为８８－１０２％和８５－１００％。方法具有干扰小，分离     

吸光度比值K系数法测定安痛定注射液的含量

吸光度比值Ｋ系数法是一种可以同时测定多元混合组分的分光光度法，本文成功地应用该法测定了安痛定注射液中氨基比林，安替比林和巴比妥三种组分的含量，其平均回收率和相对标准偏差分别为９８．９６％，０．４１％，１００．６％，０．３４％，９８．３３％，０．６５％，本法简便快速，结果准确可靠。     

出口重晶石中的痕量汞FIA-冷原子吸收法测定

本文介绍FIA-冷原子吸收法测定重晶石中的痕量汞，方法简便、快速，准确度与精确度均能获得满意结果。方法的回收率在97．8％－103．2％，相对标准偏差（RSD）为0．7％－5．34％．     

Infrared Quantitative Study of Acetylation of Microspheres of Polystyrene

Abstract

Fourier transform infrared spectroscopy has been used to study quantitatively the acetylation of monodisperse polystyrene microspheres with diameters ranging from 7 to 9μm. The CH₂ stretching infrared vibration mode at 2921 cm^?1 was used as the internal intensity standard. The acetylation extent could be easily measured by comparing the relative intensities of the bands of acetyl group (1678, 1415, 1359 cm^?1) or the bands due to the para-substituted benzene ring to the band at 2921 cm^?1 from the calibration curve.     

BSA-SDS-Ag聚合物纳米微粒的制备及其水凝胶性质的研究（Ⅰ）

报道了BSA－SDS－Ag聚合物纳米微粒的制备及水凝胶的性质,用X射线衍射（XRD）、透射电镜（TEM）、傅里叶变换红外（FT－IR）光谱考察了这种聚合物微粒的结构,微粒粒径32nm左右,用UV／Vis光谱及SEM考察了冰凝胶的性,表明Ag^ 离子先与BSA产生化学键合,再学原了Ag粒,进行聚合成网状结构的聚合物。     

Application of the method of X-ray fluorescence analysis for determination of the degree of chlorination of copper phthalocyanin

To whom correspondence should be addressd.     

混合物物态方程的计算

 在采用体积相加原理计算混合物物态方程的基础上,建立了一种物理模型确定混合物温度。根据混合物中各组分温度和压强平衡条件,采用压强-密度迭代方法计算给出混合物物态方程,编制了两种组分的混合物物态方程计算程序。为检验建立的温度模型的合理性及程序的有效性,分析了不同密度、温度状态的氢（H2）和钨（W）组成的混合物状态参量,计算了以下情形及其组合情形的混合物物态方程：H₂和W以不同质量比混合;质量比固定,单组分状态不同;温度区间和密度区间不同。研究表明:实际应用中在建立的混合物温度模型基础上确定的混合物物态方程是合理的。     

傅里叶望远镜外场实验性能改进和结果分析

为了实现对傅里叶望远镜成像系统更接近实际的仿真,改进了外场实验系统结构。采用反射式目标,利用准直扩束镜替代空间滤波器和准直透镜,使用大靶面电荷耦合器件作为监视器。在无大气和包含200m水平大气两种情况下,分别对2.5mm的4种不同空间频谱分布目标进行实验。实验选用9×9,17×17,33×33和65×65傅里叶分量分别进行重构。最高成像角分辨率为3.5″。结果表明含大气与无大气重构结果的Strehl比值相近,从而证明傅里叶望远镜成像系统能够克服下行链路低阶大气扰动的影响。     

Electron microscopy study of aggregation of microclusters of sulphur

A study of aggregation of sulphur particles in colloidal suspension of sulphur in water-methanol mixture using TEM and electron diffraction is reported. From the micrographs the aggregates formed have been found to be random and tenuous indicating a fractal structure. The electron diffraction patterns of the aggregates are used to study the mechanism of diffusion and reaction limited aggregation.     

Optical investigation of dynamics of phenomena of laser-based lithotripsy

Using time-resolved high-speed shadowgraphy, the dynamics of phenomena due to laser-based lithotripsy is studied. Collapsing mechanism of bubble formed therein is investigated. In order to study the mechanism, the optically implemented mathematical morphology is applied. The study of the shape of the plasma and the collapsing region of the bubble of fluid that we are studying can possibly be used for practical application for laser-based lithotripsy.     

Some peculiarities of deep PT-changes of physical properties of rocks

Abstract

Results of petrophysical PT-experiments are discussed. Used is a method of program modeling of experiments. Thermobaric dependence of elastic properties of acid, intermediate and basic rocks as well as elastic wave velocity anisotropy in amphibolites is studied. Deep PT-regimes effect on electrical resistance of dry and water-saturated rocks has been studied. PT-conditions of full loss of the remanent magnetization of volcanites have been established. A number of regional petrophysical lithosphere models has been constructed.     

分子费米共振拉曼光谱强度分析

测量了CCl₄和CS₂分子的Raman光谱。用Bertran理论和群论等相关理论对其光谱强度进行了分析,获得了发生费米共振分子的拉曼光谱强度的特殊规律： (1)发生费米共振的基频和倍频(和频)间发生能量转移,两光谱强度大小相互接近,当发生费米共振的基频和倍频(和频)间距离很小时,两发生费米共振的光谱强度相等(R=1);(2)能出现倍频光谱强度高于其基频光谱强度;(3)也会观测到费米共振光谱,而观测不到参与费米共振的和频中的基频光谱。此研究对化学、材料科学中的分子结构、材料成分等研究中的谱线认证、归属有很好的参考价值。     

Simulation of the contours of spectral lines of closed-ARC radiation

Simulated contours of self-reversed lines of Tl at 535 nm (7²S_1/2−6²P_3/2) and 378 nm (7²S_1/2-6²P_1/2) in alternating-current closed-arc radiation in mercury vapor with an addition of Tll were compared with experimental contours. It is shown that while a single self-reversed contour has many different sets of model parameters that ensure coincidence of experimental and calculated profiles, in the case of operation with a large data file of contours that correspond to different directions of observation along chords perpendicular to the discharge axis, and with different lines that have a common level, such a set of parameters becomes virtually unique. Instantaneous spatial distributions of Hg and Tl atoms in the ground state and of Tl atoms in the 6²P_3/2 state are determined and the parameters of the van der Waals broadening of the 7²S_1/2 level are found. It is shown that a considerable “red” shift of absorption contours in the outer layers of the discharge is observed. The results obtained contradict the presumed existence of local thermodynamic equilibrium in the given discharge. Reported at the Conference “Plasma Physics and Plasma Technologies,” Minsk, September 15–19, 1997 Petrozavodsk State University, 33, Lenin Ave, Petrozavodsk, 185640, Russia. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 65, No. 5, pp. 761–768, September–October, 1998.