摘要:

In analytical plasma spectrometry the dropled size distribution, produced by a sample introduction system is essential in a few directions. Conclusions: about the nebulizer and spray chamber design parameters, may be drawn1,2as well as about phenomena related to the transport of droplets from the nebulizer to the plasma, and about phenomena related to the desolvation of droplets and volatilization and dissociation processes associated with residual solid particles in plasma. One of the methods for investigating droples size distribution is investigating the size distribution of desolvated particles3,4.

ISSN:0038-7010    

DOI:10.1080/00387018408068038

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

Nitrogen laser induced two photon ionization spectrometric (TPIS) signals were detected with a simple dc current detector (picoammeter), of which the detection power is nearly the same as with a boxcar peak-gated detection technique. The advantages of this dc detection system are the simple operation and low cost of construction, i.e., no special instruments are necessary to obtain the TPIS signal. By monitoring TPIS and background (leakage) currents alternately, the present dc system is successfully applied to the detection of the oil-soluble vitamins at ppb to sub ppb levels.

ISSN:0038-7010    

DOI:10.1080/00387018408068039

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

The13C NMR data for six amino-acid derivatives and two di-peptides have been obtained. The ready detection of Cis-trans isomerism around the urethane and amide bond of sarcosine derivatives, is reported.

ISSN:0038-7010    

DOI:10.1080/00387018408068040

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

Plasma excitation sources provide a possibility for body fluids analysis with minimum sample preparation. The main purpose of this preparation is to insure the normal operation of the pneumatic nebulizer of the sample introduction system. The concentrations of different elements are determined only after dilution of blood, serum or urine samples by ICP1–7and by DCP after serum deproteinization8.

ISSN:0038-7010    

DOI:10.1080/00387018408068041

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

In binary mixtures of substituted phenols and pyridine (I) OH…N →O−…H+N (II) hydrogen bonds are present in the phenol-pyridine complexes1. The position of the equilibrium of both forms is influenced by the acidity of the phenols.

ISSN:0038-7010    

DOI:10.1080/00387018408068042

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

The 0–0, 1–0 and 0–2 bands of the B2ε±-X2½subsystem have been recorded at high resolution and analyzed. Rotational constants for the74Ge35Cl,72Ge35Cl and70Ge35Cl molecules have been determined.

ISSN:0038-7010    

DOI:10.1080/00387018408068043

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

The use of x-ray fluorescence spectroscopy (XFS) using hard x-rays (λ <2 A), or soft (S) x-rays (2 A<λ<10 A) for elemental analysis of thin films and coatings, where the film thickness (t) is about 103A or greater, is textbook information.(1)A cursory examination of the literature reveals no information of thin film characterization (elemental or molecular) in the ultrasoft (US) region (λ>10 A). This finding is particularly surprising since, as discussed below, one could expect USXFS to be able to characterize surface-thin films with t values below 103A.

ISSN:0038-7010    

DOI:10.1080/00387018408068044

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

An electrothermal atomizer is basically an atom vaport generator and an optical cell that should contain these vapors. With few exceptions1–6most electrothermal atomizers produce and confine the atom cloud as a single step in the very chamber. If these functions can be separated in time and space, and a higher temperature can be ensured in the cell, significant accuracy improvements should be obtained.

ISSN:0038-7010    

DOI:10.1080/00387018408068045

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0038-7010    

DOI:10.1080/00387018408068037

出版商:Taylor & Francis Group    

年代:1984

数据来源: Taylor