In situ vapor generation inductively coupled plasma spectrometry for determination of iodine using a triple-mode microflow ultrasonic nebulizer after alkaline solubilization

GGR Biennial Critical Review: Analytical Developments Since 2010

“…Detection limits for HG elements ranged from 1 to 7 μg l −1 , while detection limits for nebulised element ranged from 7 to 40 μg l −1 . Iodine vapour generation was also achieved by the same authors using a USN with three capillaries for introduction of H 2 O 2 , H 2 SO 4 and sample pre‐treated with Fe and NaNO 3 (Matusiewicz and Ślachciński ). Again, the capillaries were in direct contact with vibrating nebuliser surface, enabling mixing and dispersion before gas–liquid separation with a cyclonic spray chamber.…”

Atomic spectrometry update. Clinical and biological materials, foods and beverages

“…A method to vaporise I for measurement by AES at 183.038 nm was developed by Matusiewick and Slachcinski. 83 Samples were solubilised using TMAH and the I 2 vapour formed during passage through a microflow USN triple-mode micro-capillary system. Mixing with H 2 SO 4 , H 2 O 2 and NaNO 2 at the quartz oscillator oxidised the sample solution and allowed formation of the I 2 vapour.…”

“…The authors paid considerable attention to the merits and limitations of sample preparation for quantitative analysis by either technique. They reported that the best figures of merit were obtained with sample preparation in alkaline media with determination of I using ICP-MS. An alkaline solubilisation treatment was used by Matusiewicz and Slachcinski 83 for the quantitative determination of I in biological matrices using VG-ICP-AES. Following solubilisation with TMAH, the sample solution was reacted with H 2 SO 4 -H 2 O 2 -NaNO 3 in a triple-mode microflow USN to generate I 2 vapour for quantitative determination of I by ICP-AES at the 183.038 nm emission line.…”

“…A micro-USN coupled with VG-ICP-MS was evaluated for the determination of I using a short oxidation reaction time. 83 Mixing of sample (solubilised in TMAH) and oxidant (H 2 SO 4 -H 2 O 2 -NaNO 2 ) at the quartz oscillator resulted in rapid delivery of the reaction products to the spray chamber entrance and, at a flow rate of 15 mL min À1 , the LOD was 1.6 ng mL À1 and the RSD was between 2 and 4%. The trueness was reported as being satisfactory, as was the determination of I in a variety of samples.…”

Effect of temperature on direct chemical vapor generation for plasma optical emission spectrometry: An application of programmable temperature spray chamber

“…While systematic investigations of DCVG have been carried out for ICP-OES [11][12][13][14][15][16], few comparable studies of the technique have been carried out with MIP-OES [17,18]. As a consequence, many aspects of sample-plasma interactions in MIP-OES are sparsely documented, and their influence on the analytical performance remains practically unknown.…”