Ultra-trace determination of mercury by platinum-coated tungsten coil trapping cold vapour atomic absorption spectrometry

Yıldız, Dilek; Atasoy, Muhammet; Arslan, Yasin

doi:10.1080/03067319.2022.2118591

Cited by 4 publications

(8 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The collection time was 120 s and the analyte volume was 10.5 mL. There are generally two types of interference in AAS, spectral and non‐spectral interference [38] . Spectral interferences occur as a result of radiation being absorbed by the species present in a sample, rather than by the free atoms of the analyte [30] .…”

Section: Resultsmentioning

confidence: 99%

“…There are generally two types of interference in AAS, spectral and non-spectral interference. [38] Spectral interferences occur as a result of radiation being absorbed by the species present in a sample, rather than by the free atoms of the analyte. [30] Solid particulate products that cause scattering of radiation or combustion products that create broadband absorption also cause significant spectral interferences.…”

Section: Interference Studiesmentioning

confidence: 99%

See 1 more Smart Citation

Development of a New and Highly Sensitive Method for Arsenic Determination in Drinking Water Samples Using Au‐Coated W‐Coil Atom Trap Hydride Generation Atomic Absorption Spectrometry

Atasoy

2023

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

A novel ultra‐sensitive gold‐coated tungsten‐coil atom trap coupled with HGAAS was developed for the first time for the determination of arsenic. The analytical methodology was based on transporting and in‐situ trapping of arsine produced by the hydride generation system onto a gold‐coated W‐coil trap for preconcentration via Ar and H2 gases. The trap surface was examined using scanning electron microscopy and energy‐dispersive X‐ray spectroscopy. SEM images revealed that the surface is covered with hexagonal and pentagonal structures on a micro scale with gold. The experimental parameters were optimized for both trap and non‐trap method. The enhancement factor for the characteristic concentration (C0) was determined to be 15.3 when compared with the non‐trap methods. For the trapping time of 120 s using the developed method, the limit of detection (LOD) and the precision were determined as 4.8 ng L−1 and 3.6 %, respectively. The interference effects of various hydride‐forming ions were examined in detail. The accuracy of this ultrasensitive methodology was successfully verified by analysis of certified reference materials and some drinking water samples.. t‐test was implemented to the water samples, the added and measured concentrations exhibited no statistically meaningful distinction at the 95 % confidence level.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Interference Studiesmentioning

confidence: 99%

Development of a New and Highly Sensitive Method for Arsenic Determination in Drinking Water Samples Using Au‐Coated W‐Coil Atom Trap Hydride Generation Atomic Absorption Spectrometry

Atasoy

2023

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

show abstract

“…The instrument was operated under vacuum or helium rather than in air when low-Z elements were analysed. The reanalysis of lters previously 63 Ni, 237 Np, 239 Pu, 90 Sr, 99 analysed using a benchtop EDXRFS instrument demonstrated comparable performance and gave similar LODs. Differences between measurements pairs was <40% with well-correlated data of r 2 = 0.88-0.99.…”

Section: Sample Preparationmentioning

confidence: 91%

“…Atomic absorption spectrometry. Methods for improving the sensitivity of the AAS analysis of waters that did not involve chemical preconcentration included 63 the trapping of Hg 0 aer CV generation on a tungsten coil. Coating of the coil with platinum and heating it to 60 °C during the trapping phase doubled the absorption signal obtained when trapping at room temperature.…”

Section: Speciation Analysismentioning

confidence: 99%

Atomic spectrometry update – a review of advances in environmental analysis

Bacon,

Butler,

Cairns

et al. 2024

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

show abstract

“…Researchers have developed some trap methods to achieve very low detection limits . Moreover, the better sensitivity of the trap system leads to greater dilution of sample constituents, thereby decreasing the effect of diluted interferents on the analyte under study . In previous studies, it was reported that interference effects can be significantly eliminated by changing the trap temperature .…”

Section: Introductionmentioning

confidence: 99%

Development of a New Sensitive Method for Lead Determination by Platinum-Coated Tungsten-Coil Hydride Generation Atomic Absorption Spectrometry

Atasoy

2023

ACS Omega

Self Cite

View full text Add to dashboard Cite

A novel very sensitive and rapid analytical method was improved where gaseous lead formed was transported to and trapped on an externally heated platinum-coated tungsten-coil atom trap for in situ preconcentration. The analytical performance of the developed method with the graphite furnace atomic absorption spectrometry (GFAAS) method was compared. All critical parameters affecting the performance of both methods were optimized. The limit of quantitation (LOQ) was found as 11.0 ng L −1 and the precision was 2.3% in terms of percent relative standard deviation (RSD%). Characteristic concentration (Co) of the developed trap method was indicating a 32.5-fold enhancement in sensitivity compared to the GFAAS method. In order to investigate the surface morphology of the W-coil, scanning electron microscope−energy-dispersive X-ray (SEM-EDS) analyzes were performed. The accuracy of the trap method was tested by certified reference materials: NIST SRM 1640a (the elements in natural water) and DOLT:5 (dogfish liver). Interferences from other hydride-forming elements were investigated. Application of the trap method was demonstrated by the analysis of some drinking water and fish tissue samples. The t test was applied to drinking water samples, and the results indicated that there was no statistically significant error.

show abstract

Ultra-trace determination of mercury by platinum-coated tungsten coil trapping cold vapour atomic absorption spectrometry

Cited by 4 publications

References 36 publications

Development of a New and Highly Sensitive Method for Arsenic Determination in Drinking Water Samples Using Au‐Coated W‐Coil Atom Trap Hydride Generation Atomic Absorption Spectrometry

Development of a New and Highly Sensitive Method for Arsenic Determination in Drinking Water Samples Using Au‐Coated W‐Coil Atom Trap Hydride Generation Atomic Absorption Spectrometry

Atomic spectrometry update – a review of advances in environmental analysis

Development of a New Sensitive Method for Lead Determination by Platinum-Coated Tungsten-Coil Hydride Generation Atomic Absorption Spectrometry

Contact Info

Product

Resources

About