Detection of Trace Concentrations of Column III and V Hydrides by Laser-Induced Breakdown Spectroscopy

Cheng, Emily; Fraser, R. D.; Eden, J. G.

doi:10.1366/0003702914336273

Cited by 28 publications

(5 citation statements)

References 9 publications

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“…Cheng et al [35] has studied the measurement of metal hydrides; phosphine (PH 3 ), arsine (AsH 3 ) and diborane (B 2 H 6 ) concentrations, (1-400 mg/L), in helium gas standard at low pressures. The detection limits for phosphine, arsine and diborane were determined to be 1.0, 3.0, and 1.0 mg/L by volume, respectively.…”

Section: Introductionmentioning

confidence: 99%

Development of a continuous flow hydride generation laser-induced breakdown spectroscopic system: Determination of tin in aqueous environments

Ünal

Yalçın

2010

Spectrochimica Acta Part B: Atomic Spectroscopy

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The design, construction and optimization studies of a continuous flow hydride generation laser-induced breakdown spectroscopic system, HG-LIBS, for the determination of tin in aqueous environments is presented. Optimization of the Laser Induced Breakdown Spectroscopy (LIBS) signal with respect to carrier gas flow rate, analyte, acid (HCl) and reductant (NaBH 4 ) concentrations and flow rates was performed by using spectral emission intensity from the neutral Sn(I) line at 284.0 nm under atmospheric pressures. With flow rates of 5.0 mL/min for NaBH 4 and 2.5 mL/min for HCl, optimum NaBH 4 and HCl concentrations were determined as 2.0% (w/v) and 1.0% (v/v), respectively. The hydride generation efficiency of the system was tested for tin hydride, stannane (SnH 4 ), by inductively coupled plasma mass spectrometer (ICP-MS). It was found that higher than 99% of the analyte was released into the gaseous phase. Upon optimization, the minimum detectable Sn concentration was found as 0.3 mg/L in water samples. That corresponds to more than two orders of increase in sensitivity compared to methods that employ common sample introduction techniques in liquids analysis by LIBS. Over 90% recoveries were obtained from spiking experiments with river, tap and drinking water samples. Results illustrate potential use of the continuous flow HG-LIBS system for monitoring of Sn concentrations in aqueous environments.

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Section: Introductionmentioning

confidence: 99%

Development of a continuous flow hydride generation laser-induced breakdown spectroscopic system: Determination of tin in aqueous environments

Ünal

Yalçın

2010

Spectrochimica Acta Part B: Atomic Spectroscopy

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“…The majority of the LIBS studies have involved solid samples (e.g., paper, soils, paint, metals, steel); LIBS analysis of gaseous samples have been reported for the detection of F, Cl, S, P, As, and Hg in air and column III, V hydrides (e.g., B 2 H 6 , PH 3 ). − The intent of the studies was the measurement of trace amounts of analytes in hostile environments and gas impurities for the hydride work. Hg was detected at the parts per billion level in air using a photodiode array detection system which recorded single-shot spectra over a range of 20 nm .…”

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confidence: 99%

Laser-Induced Breakdown Spectroscopy for Real-Time Detection of Halon Alternative Agents

et al. 1998

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We report the results of an evaluation of laser-induced breakdown spectroscopy (LIBS) for the detection of candidate halon replacement compounds (CF 4 , CF 3 H, CF 2 H 2 , C 2 F 5 H). The fundamental (1.064 µm) from a Nd: YAG Q-switched pulsed laser was focused into an air flow containing 0.0005-5% of the analyte halocarbon compounds. The laser-produced plasma emission consists of a large number of intense fluorine atom lines in the 600-850 nm spectral range. Limit-of-detection studies indicate that LIBS can detect these compounds in the parts per million range. Also, we have recorded singleshot LIBS spectra with good signal-to-noise ratios using an intensified photodiode array. Our results indicate that LIBS is a promising detection technique for in situ and real-time measurement of halons during use in full-scale fire suppression testing.

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“…For example, concerning phosphorus detection during steel analysis, Sturm claimed a LOD of 9 ppm [47]. Cheng claimed a LOD of 3 ppm in the detection of PH 3 in helium [48] and concerning the detection of phosphorus in air, Radziemsky claimed a LOD of 1.2 ppm [49]. In our study, oligonucleotides deposits on polyimide (and DNA micro-arrays) are nonhomogeneous thin layers (thickness of nucleic acids deposits on polyimide ≤10 nm): it is more judicious to express our LOD in atoms/cm 2 .…”

Section: Statistical Data Analysismentioning

confidence: 99%

First improvements in the detection and quantification of label-free nucleic acids by laser-induced breakdown spectroscopy: Application to the deoxyribonucleic acid micro-array technology

Meur¹,

Menut

Wodling

et al. 2008

Spectrochimica Acta Part B: Atomic Spectroscopy

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Detection of Trace Concentrations of Column III and V Hydrides by Laser-Induced Breakdown Spectroscopy

Cited by 28 publications

References 9 publications

Development of a continuous flow hydride generation laser-induced breakdown spectroscopic system: Determination of tin in aqueous environments

Development of a continuous flow hydride generation laser-induced breakdown spectroscopic system: Determination of tin in aqueous environments

Laser-Induced Breakdown Spectroscopy for Real-Time Detection of Halon Alternative Agents

First improvements in the detection and quantification of label-free nucleic acids by laser-induced breakdown spectroscopy: Application to the deoxyribonucleic acid micro-array technology

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