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In this paper, the station of the absorption edge of Sr0.63 Ba0.37 Nb2O6 single Crystal is measured with experimental studies. The absorption coefficient is calculated with transimitting curve. The absorption edge below 3.5eV is attributable to indirect transition by studing the alpha1/2-hv curve. The phonon energy Ep and the energy gap Eg are ascertained.

The apparatus of Faraday effect LMR used for the detection of 14N 16O and 15N 16O is described in this paper. We gave and analyzed the spectra of FLMR of 14N 16OX2pi3/2 (1. 5) v =0-->1 transition and 15N 16OX2pi3/2Q(1.5) v =0-->1 transition. The dependence of FLMR signal on the sample molecular concentration has been stadied.

In this paper, based on the results of previous paper[1], the other characteristic infrared spectra of alpha,alpha'- dioxoketene cyclic dithioacetals have been studied and their changing rules with the change of chemical structure have been indicated.

This paper studied the near-infrared spectra of liquid samples. The plots of weights at each wavelength showed the spectral characteristics of pure materials. The samples could be classified by using plots of the scores of their first principal components. The principal component regression of samples was made. The obtained results were identical with the reference analytical values. The advantages of near-infrared spectroscopy, combined with principal component analysis, lie in its nondectructivity for samples and suitability for on-line measurements.

Far FT-IR spectra of Rb3GaF6, alpha-Cs3GaF6 and high temperature form Cs3GaF6 and their XDS have been studied in this paper. The results indicated that Rb3GaF6 and high temperature form Cs3GaF6 are tetragonal, a = 0.632,c = 0. 886nm and a = 0.687,c = 0. 987nm respectively. alpha-Cs3GaF6 is orthorhombic, a = 1. 062,b = 0. 996,c = 0. 561nm

The principle of UV spectroscopy applied in structural studies of metal centre of complexes is introduced in this paper. Several examples prove that such spectroscopy is an effective technical method in structural studies of metal centre of metal-protein.

This paper reports the determination of calcium in brains of rat by ICP-AES. The recovery rate is 97%, the RSD is 1.16%, and the results are satisfactory. The interference effects of phosphor on the calcium under various operating conditions in ICP-AES were studied.

This paper studies the direct determination of P, Si, Mn, Cu, Cr and Ni in steels with the changed internal standard. The standard curves are standardized with FULL STANDARDIZATION, and the results of the sample are calibrated with TYPE STANDARD in time. The signal intensity influenced by RF power, observation height and sample gas folw is discussed. Results obtained for the determination of every element in steels are satisfactory. The RSD is less than 0.5% and the recovery is about 96-103%. The detection limit is about 0. 002-0.07%.

The recent progrees of experimental techniquee and research of fundamental procees including kinetic and thermodynamic methods for atomization under isothermal conditions in GFAAS are reviewed in this paper, meanwhile, the limitations in currently available approaches are also diecussed. It covers 45 papera.

In this paper, studied the suitable operating conditions for determination of Cd, Co, Ni in grain by Graphite Furnace Atomic Absorption Spectrometry. This method has beer used to determine the three elements in grain and the results are satisfactory.

In this paper, a simple and highly sensitive laser fluorimetric system is described, and the value of time discrimination for suppressing unwanted signals and decreasing the minimum detectable concentration is demonstrated. It is confirmed that time discrimination is very useful for ultratrale determination of fluorescent complex. This technique is successful with the combined use of a pulsed laser and a pulse-gate signal detection system for samarium complex. The linear range and the detectin limit of the method are 0. 01-10microg/ml and 3.3ng/ml, respectively. The RSD for Sm3+ (0. 5microg/ml) ( n =12) is 3.7%. The method was used to detemine samarium in rare earth mixtures. The recovery was in the range of 90.0-110.0%, and the mean recovery was 101.4% ( n = 6 )

In this paper, interaction between CP (Cis-ddp or ciplatin) and DNA (deoxyribonucleicacid) was studied using the fluorescence probe as well as the absorption spectra of DAN.

Pefloxacin is a new kind of antibiotic. In this paper, a sensitive fluorescence method has been developed for the analysis of Pefloxacin. It has stronger fluorescence excitation. The fluorescence of Pefloxacin was measured at excitation wavelength 282nm and emission wavelength 440nm. The method is highly sensitive with lower limit of detection, calibration curves were linear between 1 x 10(-9) - 1 x 10(-6)mol/L, with a regression coefficient of 0.9999. At the same time, recoveries of pefloxacin in Human serum Albumin and Urine are 95% and 105% respectively.

This paper summarizes recent advances in absolute analysis by graphite furnace atomic absorption spectrometry, including the developments of absolute analysis in atomic absorption spectrometry, the theoretical calculation of characteristic mass, the study of the stability of experimental characteristic mass and the applications of standardless analysis in various samples.

This paper gives a brief introduction about the structure of the echelle spectrometer which was installed at coude focus of the chinese 2. 16 meter astronomical telescope. According to the design requirment of this echelle spectrometer, the main points and steps of alignment of optical system are analysed. Authors work out a practical alignment scheme in which the fewest auxiliary tools are used.

The effects of pH, various organic solvents, surfactants, beta-CD and PVA on derivative reaction and fluorescence properties of its product between fluorescamine and p-amino phenyl sulfonic acid have been studied. The results show that the derivative reaction needs the organic solvent, many kind of organic solvents are available, but its amount should not be too large. The rate of derivative reaction was slowed and fluorescence intensity of product was decresed with increase in amount of organic solvent and precision is not good because of the fluorescence intensity is changing with delay time. Only tritonX-100 enhanced the fluorescence of product in all of the surfactants tested. Span20, Tween80 and Brij35 which same as tritonX-100 are non-ionic surfactant, and PVA, beta-CD do not exhibit sensitization. Ionic Surfactant CTAB, SDS quench the fluorescence. The sensitization of tritonX-100 is dependent on the amount of organic solvent. A competitive effect between tritonX-100 micellae and organic solvent is exhibition. In this paper, the derivative reaction between fluorescamine and p-chloroaniline is compared and studied too.

In this paper the infrared-spectral changes and thermal gravimetric analysis of the gels formed with carboxymethyl hydroxypropyl guar gum (CMHPG) cross-linked with metal ions (Fe3+, Cr3+, Ti4+) have been studied. The results indicated that the coordinated active sites are mainly supplied with hydroxypropyl, neigbouring cis-OH of main chain and carboxymethyl groups of CMHPG. And the results of spectral analysis showed the strength orders and coordinated mode of the guar gum cross-linked with metal ions.

The paper reports the direct determination of Pb and Cd in milk powder by GFAAS. The mothed does not need any pre-treatment to the samples and fully use some function of pre-treatment which the Graphite Furnace have. The result indicates that the method is simple, rapid and accurate, and the false result from any pre-treatment to the samples can be reduced. The recover rate of Pb is 100.1%, CV =2.7 ; and Cd is 98.6%, CV = 3.1 %. This method is also applied to the rapid determination of Pb and Cd in soluble samples with satisfactory results.

Measurement results of laser induced autofluorescence spectra of tumor tissue from little rat are given in this paper it is compared with normal tissue of the same body After analyzing the origin of tumor tissue autofluorescence and the difference with normal tissue spectra, it is concluded that autofluorescence spectra of tissue may reflect the features of tumor tissue and be utilized to diagnose the tumor.

In this paper we gave been discussed the variation law of fluorescence intensity of 2, 3, 7, 8-tetracloro-N-ethyl-phenothazine under different conditions. The experimental results show the best emit light system of fluorescence. It has theoretical significance and practical value on raising seneitivity of organic photoconductor.

The conditions of title method has been studied. In this paper coefficient correction was used to eliminate the interference of benzo(k)fluoranthene. The method has an advantage of covenient and rapid. The results of real samples are satisfactory.

This paper introduces the basic principles and techniques of the near-field microscope and the status of recent development in the near-field spectroscopy. We also discuss problems facing the analysis of the results of the near-field spectra.

This paper studied the tribochemistry of antiwear additive BA1 by FTIR microscope technique. We observed the changes of physical properties, interpreted the infrared spectra of the products in the track and concluded the chemical mechanism through the change of BA1 concentration, load and rubbing time. The results shows that the BA1 was decomposed, oxided and a thin film was produced when rubbed. This film makes the rubbing efficiency less.

This paper describes a investigation about the spectral characteristics of argon in a novel microwave plasma enhanced glow discharge source. In different discharge conditions, such as glow discharge, microwave plasma and microwave plasma enhanced glow discharge, there are different distributions of argon spectral lines.

The designed scheme of China made sequential scanning ICP spectrometer was described in this paper. The considerations of monochromater, RE generator, scanning machine, intensity measurement, the utility of far ultra vioiet region, the controlling of temperature and carrier ags flow, and the software were discussed detailly. A good designed seheme promoted the manufacturing and performed in short period.

This paper established a new and convenient method for the determination of Cu, Zn, Ca, Mg and Fe microelements content in whole blood samples from human's ear by using flame AAS with microsample injection. The results show that recoveries of these microelements are above 96.0% and relative standard deviation of Zn, Ca, Mg and Fe are less than 2.0%, Cu is less than 3.9%. Satisfactory results are obtained with only 10 microL whole blood samples from human's ear.

In this paper, we have studied the fluorescence extinction effect of methyl alcohol by prostaglandinum E1 (PG E1) and found the linear relation between the fluorescence extinction intensity and prostaglandinum E1 concentration. Its linear equation is deltaF = 0.222c + 9.33 x 10(-2)(deltaF: fluorescence extinction value; c: PG E1 concentration microg/mL), correlation coeficient r = 0.99930. The results derived from fluorescence extinction method correspond to the results from violet spectrophotometric method.

This paper described the simultaneous determination of sulfadiazine (SD) and trimethoprim (TMP) in tablets co-Trimediazini by dual wavelength spectrophotometry multriplication subtractive method. This method was based on the measurement of both absorbance of standard solution of SD (8-14) x 10(-6)g/mL, TMP (1-2) x 10(-6)g/mL and sample solution at wavelength 242.5 nm and 228.0nm. The average recovery and RSD of SD and TMP were 100.60%, 0.33% and 98.27%, 1.58%, respectively (n=20). The method was simple, quick and results satisfactory.

Determination of trace rare earth in fossil of dinosaurian egg by LTLS (Laser thermal lens spectrometry) is presented in this paper. The trace rare earth in fossil of dinosaurian egg was separated and concentrated with ion exchange method. The measure conditions and effect factors are discussedian. The LTLS was applied to the determination of trace rare earth in fossil of dinosaurian egg with satisfactory results. It provides the reference data for the studies on the fossil of dinosaurian egg and an analytical method for the determination of rare earth in geochemical sample.

In this paper, eleven new thiourea compounds were prepared and studied by IR spectroscopy. The fundamental vibrations have been assigned. The band near 1540cm(-1) was identified as thiourea I band, which mainly originated from the N-H deformation vibration coupling with a little C-N stretching vibration. Thiourea I band near 1280cm(-1) mainly originated from C-N stretching vibration. C=S stretching vibration frequency was at near 110cm(-1) and it was identified as thiourea III band.

The resonance Raman spectra of Mn(III), Rh(III), Fe(III), Pd(II) protoporphyrin IX-dimethylester (PP) and tetra-phenylporphyrin (TPP) complexes were reported. The difference of their structure-sensitive band frequency was a result of the interaction of different metal ions' outer d electrons with the electrons of the porphyrin ring. As well the effects of different porphyrin rings and their substituts on the structure-sensitive bands were discussed in this paper.

Simple optical multichannel analyzer (OMA) system which is formed by ordinary one dimension CCD camera, spectrograph and microcomputer was introduced in this paper. Spectrochemical analysis feasible of this OMA system was studied. The applied software programed, by us can realize wavelength calibration, spectral line identification and give out automatically the results of qualitative and semidefinite quantity analysis.

In this paper, a hydride generation non-dispersive atomic fluorescence spectrometry method has been developed for the determination of trace arsenic, antimony, selenium and mercury in Chinese herbal medicine in Qinghai-Xizang plateau. Under the optimum condition, the quantities of fourteen interference elements are below certain non-interferent limits. The detection limits were as follow (g/mL): As 1.3, Sb 0.39, Se 0.24 and Hg 0.44. The relative standard deviation of 9 determination was As 2.4-4.2%, Sb 2.5-5.6%, Se 3.1-5.0% and Hg 3.8-5.9%. The recovery of four elements was 94.7-105.4%. This method is simple, rapid, sensitive and accurate, and has been successfully tested with As, Sb, Se and Hg in more than 20 kinds of Chinese herbal medicine in Qinghai-Xizang plateau.

The determination of chromium, manganese and nickel in biological agents has obtained by flame atomic absorption spectrometry. The results show that three trace elements of body necessary are the most rich in ant factor injection liquid. The chromium content is slightly lower in the brain cell activator injection liquid, the nickel content is slightly lower in the shift factor injection liquid and the manganese is the lowest in the marrow factor injection liquid. In this paper, we have studied three trace element contents in six biological agents. It provides, useful data for clinical treatment to some trace-element-lacking diseases.

In this paper, we studied the cleavage products of dimer t-BuNO in aqueous and organic solutions using method of 1HNMR and UV-Vis, analyzed the reactive kinetics, put forward that dimer (t-Bu)2NO homolytically cleavaged in nonpolar organic solution, and that dimer (t-Bu)2NO homolytically and heterolyticall cleavaged in a competitive manner in polar aqueous solution.

Present paper describes method which uses solution of simultaneous equations to compensate for spectral "overlap" interference of In 252.137nm with Co 252.136nm. Experimental results show that solution of simultaneous equations is possible method for resolving spectral interference in atomic absorption spectrometry. This method has been applied to determination of Co and In in the samples. Satisfactory results are obtained.

In this paper a new method of preconcentrating microimpurity Cu, Fe and Pb in high pure AgNO3 using emulsion liquid membrane technique was developed for FAAS determination. The enrichment multiple was 25, recoveries were over 95%. Matrix silver does not interfere enrichment and determination.

The determination of Cu, Pb, Sn, Fe and Zn in the ancient chinese bronzes has been performed using X-ray fluorescence filter paper method. The result is satisfactory. The samples are dissolved in the HCl-H2O2 system, ard then the solution is dropped on the filter paper. It is convenient for detection by XRF. In addition this method is efficient to reduce the matrix effect of sample. The correlative coefficients of calibration curves between element concentration and X-ray intensity are over 0.99. The rate of recovery is 97-104%, and the relative standard deviation for each element is less than 2.00%. The copper's result measured by this method agrees well with that of chemical method. This method is simple, rapid and accurate. It is also applied to determine the elements in the other ancient objects.

It is of significant importance to isolate lambda(k) form the total absorption cofficient data micro(E) for the analysis of EXAFS spectrum. Generally, least-squares procedure of polynomial spline or B spline was used for removing the smooth sbsorption background, which has been proved to be effective. But it suffers in that the trial of knot points is time-consuming and it is poor in reproducibility. In this paper, a new chemometrics method--wavelet transform analysis was used to separate the lambda(k) and background absorption from micro(E) and it is proved that the technique is a very good method for the analysis of EXAFS spectrum.

The method for studying kinetics of formation reaction of complex in aggregation system was reported in this paper. The concentration of more than one species was calculated by improved method for calculating dimeration constants. Kinetics of reaction between Cu (II) and tri-sulfophthalocyanine (S3Pc) was studied in this way. It shows that the rate of reaction between Cu(II) and S3Pc can be expressed as follows: v = K[Cu][S3Pc]

This paper reported a new technique of the separation and enrich of microelements in spectra analysis.

In this paper, we have studied all kinds of static absorption spectra and transient absorption spectra of podophyllotoxin and its derivatives. We have located the site of absorption spectra and their forming mechanism with spectrofluorometry, Ultraviolet, pulse radiolysis and laser photolysis, and suggested the connection of their structrue with their anti-tumour and toxicity.

In this paper, the analyses of the synchronous flourescence spectra of phenol and O-dihydroxybenzene by quasi-square linear dual combination of multiwavelength data dual-peak multiplication balance, multiwavelength linear regression, first and second order derivative technique are proposed. Five new methods for simultaneous determination of these compounds are constructed. The accuracies and recoveries of the proposed analytical methods are found to be satisfactory.

The fluorescence-disappearing phenomenon (FDP) was used due to the nonlinear interaction between the laser and the matter, a universal phenomenon. It was often neglected during the research of surface-harmonic generation (SHG). Many experiments showed that there was a interior relation between FDP and SHG. In this paper, the mechanism of surface-harmonic generation has been discussed in detail, according to the fluorescence-disappear viewpoint and the fluorescence-disappear model (FDM) proposed also. The new mechanism was summarized by following three points: (a) The multiphoton absorption generated visible fluorescence spot, (b) Laser-heating effect and other effects promoted the conversion from spontaneous emission into quasi-stimulated emission, (c) Being accompanied by the fluorescence disappear, the part of laser energy which was initially used to cause fluorescence was now converted into developing the harmonic signal.

In this paper, the air pollutants were analyzed with a combination of Gas chromatography/Fourier transform infrared spectroscopy (GC/FTIR) and Gas chromatography/Mass spectroscopy (GC/MS). The organic mixture was well separated after a careful adjustment of GC and IR parameters in GC/FTIR. In the identification of unknown components, MS is a main method, while IR is also useful to confirm the results.

In this paper, the ultraviolet spectra of alpha,alpha'-dioxoketene cyclic S,S-acetals (N,N-acetals) have been studied and their changing characters with the change of chemical structure have been indicated.

As an important method to study the constitution and properties of macromolecular organic compounds, the infrared spectroscopy has been more and more widely taken in the researches of soil organic matters (SOM). Especially,the application of FTIR and the combined uses of FTIR with chromatogram etc. have made the researches of SOM get a great progress in many aspects. In this paper, the infrared spectroscopy applications were reviewed in SOM. It includes the following contents: the methods to study SOM by IR, studies on the constitution of soil humic substances (SHS), extraction of SOM and classification of SHS, decomposition, transformation and humification of organic matters, the differences of SOM in different situations, the interactions of SHS with metais, clay minerals and other organics in soil.

The direct determination of non-rare earth trace impurities including Cu, Fe, Ca and Ni in high purity Samarium oxide by means of ICP-AES is presented in this paper. By using orthogonality experimentation, we studied main factors of influential determination and selected compromise condition of simultaneous determination of Cu, Fe, Ca and Ni. Influence of matrix concentration was discussed. We used the method of matrix match and subtraction background. For the sample solution containing 5mg/mL of Sm2O3 the determination limits were 0. 0003% for Cu, 0.003% for Ni, 0.001% for Ca and Fe, respectively. The relative standard deviation was in the range of 2.6-9.2%. The recovery ratio of these elements was in the range of 90-110%. The method is simple and rapid. It was fit to productive control analysis and determination of production.

In this paper, we have studied the meassuring condition and the extracting condition for the determination of trace copper and lead in highly pure samaria by extraction-GFAAS. Trace copper and lead in highly pure samaria were determined. The relative standard deviations are less than 6%, the recovery is 98-101% for copper and 93-100% for lead. The method is simple, accurate and practical.

The determination of trace lead and cadium in drinking water by rapid GFAAS has been described in this paper, which is based on eliminating ashing step, shortening drying time and without chemical matrix modifier. The fast speed and simplicity makes it possible for routine analysis.