Red and near-infrared inductively coupled plasma emission spectra of fluorine, chlorine, bromine, iodine, and sulfur with a photodiode array detector

1986 ◽  
Vol 58 (4) ◽  
pp. 790-797 ◽  
Author(s):  
John M. Keane ◽  
Robert C. Fry
Keyword(s):  
Inductively Coupled Plasma ◽  
Near Infrared ◽  
Emission Spectra ◽  
Array Detector ◽  
Plasma Emission ◽  
Inductively Coupled ◽  
Photodiode Array Detector ◽  
Photodiode Array

scholarly journals Conversion of a sequential inductively coupled plasma emission spectrometer into a multichannel simultaneous system using a photodiode array detector

1998 ◽  
Vol 20 (3) ◽  
pp. 69-75 ◽  
Author(s):  
Maria Fernanda Pimentel ◽  
Mário César Ugulino Araújo ◽  
Benício de Barros Neto ◽  
Célio Pasquini
Keyword(s):  
Inductively Coupled Plasma ◽  
High Speed ◽  
Detection System ◽  
Array Detector ◽  
Plasma Emission ◽  
Inductively Coupled ◽  
Water Matrix ◽  
Simultaneous System ◽  
Photodiode Array Detector ◽  
Photodiode Array

A monochannel plasma emission spectrometer was converted to a multichannel instrument by the introduction of a detection system based on an array of 1024 photodiodes and a low-resolution dispersion device. The new, relatively inexpensive equipment, features both the high speed typical of simultaneous instruments and the versatility of scanning systems. This paper reports on an evaluation of the modified equipment for quantitative analysis with the simultaneous determination of Al, Mn, Mg, Ca, Fe and Cu in a natural water matrix. An average relative prediction error of 2.4% was found which is the same as the error obtained with the conventional analytical method. Data acquisition with the modified instrument is up to 40 times faster.

Differential Vaporization during Laser Ablation/Deposition of Bi-Sr-Ca-Cu-O Superconducting Materials

1992 ◽  
Vol 46 (6) ◽  
pp. 1025-1031 ◽  
Author(s):  
Wing-Tat Chan ◽  
X. L. Mao ◽  
Richard E. Russo
Keyword(s):  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Atomic Emission Spectrometry ◽  
Emission Spectrometry ◽  
Array Detector ◽  
Plasma Atomic Emission Spectrometry ◽  
Inductively Coupled ◽  
Photodiode Array Detector ◽  
Lower Melting Point ◽  
Photodiode Array

Nanosecond and picosecond pulsed laser ablated materials from Bi-Sr-Ca-Cu-O superconducting targets are monitored by inductively coupled plasma-atomic emission spectrometry with a photodiode array detector. Differential vaporization was observed; elements of the lower-melting-point oxides (Bi2O3, and CuO) are enriched in the vapor phase, indicating a thermal vaporization mechanism. Melted droplets observed with SEM and enriched Ca and Sr content in the ablation crater measured with EDX support the hypothesis. A steady-state mass ablation composition after prolonged laser sampling is also observed; the ratios of intensity for Bi, Ca, and Sr to Cu are constant for power density 0.1 to 3.0 GW/cm2.

Photodiode Array Studies of near Infrared and Red Atomic Emissions of C, H, N, and O in the Argon Inductively Coupled Plasma

1981 ◽  
Vol 35 (4) ◽  
pp. 396-400 ◽  
Author(s):  
Steven K. Hughes ◽  
Robert M. Brown ◽  
Robert C. Fry
Keyword(s):  
Inductively Coupled Plasma ◽  
Near Infrared ◽  
Atomic Spectra ◽  
Inductively Coupled ◽  
Photodiode Array ◽  
Low Dispersion

Preliminary qualitative multielemental inductively coupled plasma atomic spectra of C, H, N, and O are presented using a low dispersion, near infrared and red photodiode array spectrometer. Simple spectra of reasonable intensity are obtained with short (4 ms) integration times. Sensitivity and dispersion considerations are sharply contrasted with those conventionally associated with ultraviolet photodiode array spectra of metals in the inductively coupled plasma.

Determining Water Content in Human Nails with a Portable Near-Infrared Spectrometer

2003 ◽  
Vol 57 (4) ◽  
pp. 473-478 ◽  
Author(s):  
Mariko Egawa ◽  
Tadao Fukuhara ◽  
Motoji Takahashi ◽  
Yukihiro Ozaki
Keyword(s):  
Water Content ◽  
Near Infrared ◽  
Array Detector ◽  
Pls Regression ◽  
Photodiode Array Detector ◽  
Calibration Models ◽  
Infrared Spectrometer ◽  
Photodiode Array ◽  
Near Infrared Spectrometer

The water content of human nail plates was determined using a portable near-infrared (NIR) spectrometer with an InGaAs photodiode array detector. NIR diffuse reflectance (DR) spectra were collected from 108 cut nail plates with different relative humidity and in vivo from fingernails. Partial least-squares (PLS) regression was applied to the NIR spectra in the 1115–1645 nm region to develop calibration models that determine the water content in the cut nail plates and fingernails. A good correlation was obtained between the NIR spectra and the water content measured by nuclear magnetic resonance (NMR) for the NIR measurement of both cut nail plates and fingernails. The results indicate that the water content in the nails can be determined very rapidly (1 s) by means of the portable NIR spectrometer and PLS regression.

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