Improvements to the analytical performance of inductively coupled plasma optical emission spectrometry by coupling a multi-mode sample introduction system to an infrared heated pre-evaporation tube

Simultaneous multielement–inductively coupled plasma–optical emission spectrometry (ICP-OES) with flow injection (FI) and a small-volume cyclonic spray chamber is described. Analytical performance of FI-ICP-OES was studied with the use of a concentric nebulizer and the cyclonic spray chamber for carrier nebulization. A noise study using Fourier transformation analysis was also carried out to identify the factors that affect the analytical figures of merit of FI-ICP-OES. At a carrier flow rate of 1.0 mL/min, the major source of noise, between 0 and 15 Hz, was the peristaltic pump's roller rotation; this pump noise disappeared at a flow rate of 3.5 mL/min. A number of other discrete low-frequency noise sources were also observed at flow rates below 2.5 mL/min, with resultant degradation of precision and detection limit.

Download Full-text

A total consumption (up to 75 μL min−1) infrared-heated sample introduction system for inductively coupled plasma optical emission spectrometry

Journal of Analytical Atomic Spectrometry ◽

10.1039/d0ja00068j ◽

2020 ◽

Vol 35 (6) ◽

pp. 1125-1130 ◽

Cited By ~ 2

Author(s):

Ahmed Al Hejami ◽

Mirah J. Burgener ◽

John Burgener ◽

Diane Beauchemin

Keyword(s):

Inductively Coupled Plasma ◽

Optical Emission ◽

Analytical Performance ◽

Sample Introduction ◽

Emission Spectrometry ◽

Total Consumption ◽

Heated Sample ◽

Inductively Coupled ◽

Sample Introduction System ◽

Plasma Optical Emission Spectrometry

A compact infrared-heated sample introduction system provides similar analytical performance with higher robustness and faster washout than commercially available nebulization systems.

Download Full-text

Infrared heating of the top surface of a cyclonic spray chamber to improve the analytical performance of inductively coupled plasma optical emission spectrometry

Journal of Analytical Atomic Spectrometry ◽

10.1039/c8ja00363g ◽

2019 ◽

Vol 34 (1) ◽

pp. 232-238

Author(s):

Ahmed Al Hejami ◽

Diane Beauchemin

Keyword(s):

Inductively Coupled Plasma ◽

Detection Limits ◽

Optical Emission ◽

Optical Emission Spectrometry ◽

Analytical Performance ◽

Infrared Heating ◽

Emission Spectrometry ◽

Spray Chamber ◽

Inductively Coupled ◽

Plasma Optical Emission Spectrometry

Heating the top of a cyclonic spray chamber improves detection limits by up to 12 fold while increasing robustness.

Download Full-text

Comparison of Flow Injection and Continuous Sample Introduction for Automatic Simultaneous Determination of As, Sb, and Se by Hydride Generation and Inductively Coupled Plasma Optical Emission Spectrometry

Applied Spectroscopy ◽

10.1366/0003702884427816 ◽

1988 ◽

Vol 42 (3) ◽

pp. 508-512 ◽

Cited By ~ 17

Author(s):

Grace S. Pyen ◽

Richard F. Browner

Keyword(s):

Flow Injection ◽

Inductively Coupled Plasma ◽

Hydride Generation ◽

Optical Emission ◽

Sample Introduction ◽

Injection System ◽

Emission Spectrometry ◽

Inductively Coupled ◽

Flow Injection System ◽

Plasma Optical Emission Spectrometry

The determination of As, Sb, and Se using flow injection sample introduction, hydride generation, and inductively coupled plasma optical emission spectrometry has been studied. Measurements were made with the use of a simultaneous three-channel system and compared with continuous hydride generation using the same detection system. In general, peak signals obtained with the flow injection system, with 750-μL injections, were approximately three times lower than steady-state signals for the continuous introduction system. Detection limits obtained by flow injection (As, 3.5 μg/L; Se, 3.6 μg/L; Sb, 7.0 μg/L) were also approximately three times poorer than they were for continuous introduction. By contrast, precision was approximately 150% better with flow injection, due to reduced pump pulsations in the flow injection system. Other advantages of the flow injection system are the reduced sample size necessary for analysis (≤750 μL vs. 4 to 5 mL for the continuous introduction system) and the potential for a greatly increased rate of sample throughput. Recovery studies with surface water samples showed acceptable accuracy for the flow injection system.

Download Full-text