In this paper, the authors developed analytical techniques for more than eleven elements in various phases of active state and discussed the crux in extraction operation, analysis and determination. 摘要发展了元素活动态各相中11种以上元素的分析方法,讨论了提取操作和分析、测定中的关键。
Analytical method was developed for the trace analysis of taxanes in crude extraction and identification of the antitumor agent paclitaxel. 建立了一套利用反相高效液相色谱和大气压化学电离质谱联用技术分析红豆杉提取物中微量紫杉烷类化合物的方法。
The method which applies the technique of Microwave Extration and dual-ECD to analyze PCB in soil has been proposed in this paper. It is shown that this analytical method is better than traditional soxhlet extraction method based on the results of rate of recovery, accuracy and precision. 建立了利用微波萃取和双ECD联用技术,对土壤中多氯联苯(PCB)的分析方法,通过对回收率、重现性及精密度的测定,其结果均优于传统索氏萃取方法。
Application of solid-liquid extraction separation in analytical chemistry ⅰ. extraction of uranium with waxes as solid solvents 固-液萃取分离在分析上的应用1.石蜡作溶剂时铀的萃取分离研究
An analytical method is proposed for the determination of tellurium in urine by extraction-hydride generation-atomic fluorescence spectrometry with intermittent flow system. 建立了萃取-断续流动氢化物发生原子荧光光谱法测定尿中碲的分析方法。
The Characteristics and Analytical Application of N_ ( 1923)-Silica Extraction Chromatography for Palladium N(1923)&硅球对钯萃取色层性能的研究及分析应用
Objective To evaluate the application of quantitative analytical method for sleeve opening creases cosmetics quantitative analysis and efficacy evaluation with non-traumatic occlusion obtain in image of dermatoglyph in vivo and feature extraction. 目的探讨无创伤性获取人活体皮纹图像,特征提取与定量分析法,在祛皱类化妆品的定量分析与功效评价中的应用。
As a preprocessing technology, this paper mainly introduced how to optimize the analytical condition that influence the assigning coefficient, such as selection of extration fiber, extraction mode and extraction temperature etc. to improve the sensitivity and recovery of the method. 主要介绍了固相微萃取作为一种样品前处理技术,如何对影响其分配系数的各因素,如:萃取头的选择、萃取方式、萃取温度等进行优化选择,从而提高方法灵敏度及回收率。
At last, set up the analytical system of appraising on the basis of feature extraction, and integrate effectively. It realizes the double request of non-geometric feature extraction and designs appraised, which based on AutoCAD platform. 最后在特征提取的基础上建立了评价分析系统,并进行有效地集成,从而实现了基于AutoCAD平台的非几何特征提取与设计评价的双重要求。
Analytical results of GC indicated that, to trichlorphon residues in Chinese Cabbage, the extraction rate of subcritical water extraction and microwave assistanted extraction is higher than that of manual shaking extraction and ultrasonic extraction. 气相色谱分析结果表明,对于大白菜中的敌百虫残留农药,亚临界水萃取和微波辅助萃取技术较手动振荡和超声萃取的萃取率更高。
Analytical formulas for the peak power, pulse energy, pulse width, energy extraction efficiency, repetition rate and average output power are derived. 计算出了自调Q脉冲的峰值功率,单脉冲能量,脉冲宽度,能量利用率,重复频率,平均输出功率等。
This paper presents a completely new analytical method to establish the thermal characteristic coefficients and equations for the self-regulated extraction turbines. 本文介绍一种新的分析方法,即用抽汽式汽轮机热力特性的系数和方程,表示热电厂供热、供电负荷与进汽、凝汽流量之间的相互关系。
The most of analytical methods consist of multiple liquid-liquid partition steps for the extraction of patulin in apple juice concentrated. 最常用的检测方法是利用各种液液萃取分离步骤来提取苹果汁中的棒曲霉素。
In light with Bouguer gravity data, various informations on faults were obtained by means of analytical continuation, target field extraction, arbitrary horizontal direction derivative processing and discrete wavelet transform processing. 根据黄海及周边地区的布格重力资料,通过解析延拓、目标场提取、任意水平方向导数计算、离散小波变换等处理,得到各种有关断裂的信息。
This paper deals with petrographic characteristics and coal qualities of Jiaoping coal by means of coal petrologic, instrumental analytical and organic solution extraction methods, and so on. 基于煤岩分析、仪器分析及有机溶剂抽提等方法,对焦坪煤进行了系统的煤岩、煤质研究。
Experimental design for analytical scale of supercritical fluid extraction in the analysis of real world samples was introduced. 介绍了分析规模超临界流体萃取技术萃取实际样品时的实验设计。
The equivalent enthalpy drop method ( EEDM) is a partial quantitative analytical method for energy-saving analysis of thermodynamic system, the main point is to calculate the extraction equivalent enthalpy. Extraction equivalent enthalpy is traditionally considered to be a serial method and not suitable for parallel calculation. 等效焓降方法是热力系统节能分析的一种局部定量分析方法,其核心是抽汽等效焓降的计算,抽汽等效焓降的传统算法是一种串联算法。
Complex Analytical Wavelet Transform for the Extraction and Analysis of Speech Signal Envelops 复解析小波变换与语音信号包络提取和分析
The analytical expression of the density of trapping charges is proposed. The method and the results of parameters extraction are also presented. 给出了陷阱电荷密度的解析表达式和相关参数的提取方法和结果。
A analytical method for fatty acids profile of phospholipids in serum samples was developed by solid extraction column of silica gel-gas chromatography ( SPE-GC). 以硅胶基质为固定相,建立了固相萃取-气相色谱(SPE-GC)分离检测血清总磷脂中脂肪酸含量的方法。
Analytical Parameter Extraction of the HBT Small-signal Equivalent Circuit HBT小信号等效电路参数解析提取
A sensitive analytical method of trace impure elements in red lead ( Pb 3O 4) by ICP AES after separated from tri phase extraction has been studied, such as Fe? Cu? Ni? 研究了三相萃取分离法测定铅丹(四氧化三铅)中Fe、Cu、Ni、Co、Mn、Zn、Cd等痕量杂质元素的分析方法,考察了Pb基体对待测元素的干扰情况。
The applications of analytical chemistry in traditional Chinese medicine research involve the extraction, separation and characterization of the effective constituents in the medicines. 分析化学用于中药研究主要包括中药有效成分的提取、分离和表征。
The analytical sample preparation by supercritical fluid extraction ( SFE) has recently been demonstrated to have many advantages as compared to traditional methods, such as high speed, high efficiency, low cost, low pollution and so on. 用超临界流体萃取(SFE)进行分析样品处理,有快速、高效:低消耗、污染少等优点。
Research Progress of Modifiers in Analytical Scale Supercritical Fluid Extraction 分析型超临界萃取中改性剂研究进展
Analytical modeling and parameter extraction of the magnetic levitation force for an inset permanent magnet type bearingless motor 内插式永磁型无轴承电动机悬浮力模型及其关键参数萃取
Sample preparation plays an important position in analytical chemistry. Liquid-liquid extraction is a classic sample pretreatment method. 样品的前处理在分析化学中占有重要地位,前处理方法的好坏关系到整个分析方法的优劣。
Traditional analytical methods such as soxhlet extraction, liquid-liquid extraction or solid-phase extraction need many time-wasting operations, some of them also consume plenty of toxic organic solvent that are hazards to both the environment and the human beings. 传统的样品预处理方法,诸如索氏提取,固相萃取或者液-液萃取等技术往往需要复杂费时的操作步骤,且经常用到对人体和环境有害的有机溶剂。