Photochemical vapor generation of carbonyl for ultrasensitive atomic fluorescence spectrometric determination of cobalt

Deng, Hao; Zheng, Chengbin; Liu, Liwei; Wu, Li; Hou, Xiandeng; Lv, Yi

doi:10.1016/j.microc.2010.04.002

Cited by 44 publications

(58 citation statements)

References 29 publications

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“…Also, extra heating can be obtained Relatively high PVG efficiency of Ni could be achieved in the pH range of 2.5-3.0, and Co in the relatively broader range of 1.7-2.6. This is well agreed with that reported in the literatures [16,26].…”

Section: Optimization Of Pvg Conditionssupporting

confidence: 94%

“…It has been reported that the PVG of Ni and Co are partially dependent on the temperature of the photochemical reactant solution, with the best PVG for Co at about 40 ℃ [16] and Ni at 60 ℃ [15]. According to our previous work [26], an online reaction of formic acid with ammonia can take both roles of pH adjustment and heat supply.…”

Section: Optimization Of Pvg Conditionsmentioning

confidence: 91%

“…It has been reported that both Co and Ni achieved the best PVG efficiency in appropriate concentration of formic acid or buffer of formic acid and sodium formate with UV irradiation for 150-180 s [8,[14][15][16]26]. Here, we optimized the experimental conditions for simultaneous PVG of A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 9 Co and Ni.…”

Section: Optimization Of Pvg Conditionsmentioning

confidence: 99%

See 2 more Smart Citations

Integration of hydride generation and photochemical vapor generation for multi-element analysis of traditional Chinese medicine by ICP-OES

Shen

Zheng

Jiang

et al. 2015

Microchemical Journal

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Section: Optimization Of Pvg Conditionssupporting

confidence: 94%

Section: Optimization Of Pvg Conditionsmentioning

confidence: 91%

Section: Optimization Of Pvg Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

Integration of hydride generation and photochemical vapor generation for multi-element analysis of traditional Chinese medicine by ICP-OES

Shen

Zheng

Jiang

et al. 2015

Microchemical Journal

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“…Guo et al [41] first introduced PVG in 2003, and applications of this new sample introduction quickly expanded [42,43]. A wide range of elements can be photochemically derivatized to volatile species, such as Hg [44,45], Ni [46,47], Se [43], Co [48,49], Fe [50], and I [51,52]. A typical schematic of PVG system is shown in Figure 2.…”

Section: Photochemical Vapor Generation Systemsmentioning

confidence: 99%

Application of chemical vapor generation in ICP-MS: A review

2013

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Chemical vapor generation (CVG) is an important sample introduction technique, and is widely used for atomic spectrometry for its enhanced sensitivity and selectivity. In the past 30 years, inductively coupled plasma mass spectrometry (ICP-MS) has become a widely used and the most sensitive instrument for (ultra-)trace element determination and elemental speciation. A review of applications of this state-of-the-art coupling of CVG and ICP-MS is presented. Discussion is focused on its applications for both element determination and speciation, including hydride generation, cold vapor generation, photochemical vapor generation, alkylation, and electrochemical vapor generation. In addition, recent studies undertaken isotope dilution calibration in CVG-ICP-MS for achieving improved accuracy and precision are summarized, and the future perspectives are discussed. chemical vapor generation, inductively coupled plasma mass spectrometry, isotope dilution, trace element determination, speciationCitation:

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“…[15][16][17][18][19][20][21] To date, selenium, 15,21,22 arsenic, 23 nickel, 18,24 iodine, 19 cobalt, 25 iron, 20 and other analytes such as Ag, Au, Bi, Cd, Cu, Pb, Pd, Pt, Rh, S, Sb, Sn and Te 16,17 have been successfully converted to corresponding volatile species by using various photo-CVG systems.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the catalyzed photo-cold vapour generation for determination of mercury by AAS

Matusiewicz¹,

Stanisz²

2012

J. Braz. Chem. Soc.

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Nanopartículas de Ag suportadas em TiO 2 (Ag-TiO 2 ) foram usadas como catalisador na geração de vapor frio induzida por radiação UV com ácido fórmico, acoplado à absorção atômica para determinação do mercúrio total em amostras analíticas. A atividade redutora de Ag-TiO 2 foi comparada com dois catalisadores semicondutores: TiO 2 não modificado e ZnO. O efeito do tipo de catalisador, sua concentração na amostra analisada, pH da amostra, concentração do ácido fórmico e tempo de irradiação ultravioleta foi investigado. Na presença de ácido fórmico, Ag-TiO 2 foi o mais eficiente na redução de mercúrio. Nas condições experimentais otimizadas, a recuperação de mercúrio em quatro materiais de referência contendo 0,20-1,99 µg g -1 Hg foi de 95-99% dos valores certificados. O desvio padrão relativo para amostras foi igual ou melhor do que 11%. A análise de materiais de referência certificados (correspondentes a amostras ambientais e biológicas) mostrou a potencialidade do método Ag-TiO 2 -UV-CVGAAS na determinação de mercúrio em amostras analíticas no nível de ultra-traço.Nano-Ag particles loaded on TiO 2 (Ag-TiO 2 ) were used as catalyst for the UV-induced cold vapour generation with formic acid coupled to atomic absorption for determination of total mercury in analytical samples. The reducing activity of Ag-TiO 2 was compared with two semiconductor catalysts: unmodified TiO 2 and ZnO. The effect of catalyst type, its concentration in the analyzed sample, sample pH, formic acid concentration and ultraviolet irradiation time have been investigated. In the presence of formic acid, most effective in the reduction of mercury was Ag-TiO 2 . Under the optimized experimental conditions recovery of mercury in four reference materials containing 0.20-1.99 µg g -1 Hg was 95-99% of certificate values. The relative standard deviation for samples was equal to or better than 11%. Certified reference materials (corresponding to biological and environmental samples) analysis using the Ag-TiO 2 -UV-CVGAAS method revealed that it is promising for mercury determination in analytical samples at ultratrace level.

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Photochemical vapor generation of carbonyl for ultrasensitive atomic fluorescence spectrometric determination of cobalt

Cited by 44 publications

References 29 publications

Integration of hydride generation and photochemical vapor generation for multi-element analysis of traditional Chinese medicine by ICP-OES

Integration of hydride generation and photochemical vapor generation for multi-element analysis of traditional Chinese medicine by ICP-OES

Application of chemical vapor generation in ICP-MS: A review

Evaluation of the catalyzed photo-cold vapour generation for determination of mercury by AAS

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