Use of high resolution continuum source atomic absorption spectrometry as a detector for chemically generated noble and transition metal vapors

Villanueva-Alonso, J.; Peña‐Vázquez, Elena; Bermejo-Barrera, Pilar

doi:10.1016/j.sab.2009.05.024

Cited by 23 publications

(9 citation statements)

References 20 publications

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“…Comparing to conventional LS FAAS, possibilities of background correction and elimination of interferences are increased because the spectral environment of the analytical line can be completely explored. The greatest advantage of HR-CS FAAS in relation to LS FAAS is the need for only one single lamp for all elements instead of one lamp for each element (Welz et al 2003(Welz et al , 2007Becker-Ross et al 2006;Villanueva-Alonso et al 2009). In the recent years, it was demonstrated in literature a great interest in applying HR-CS FAAS to determine various analytes in food samples (Paz-Rodríguez et al 2015;Ozbek and Baysal 2015;Li and Chen 2014;Brandao et al 2010Brandao et al , 2011.…”

Section: Introductionmentioning

confidence: 99%

Determination of Ca, Cd, Cu, Fe, K, Mg, Mn, Mo, Na, Se, and Zn in Foodstuffs by Atomic Spectrometry After Sample Preparation Using a Low-Cost Closed-Vessel Conductively Heated Digestion System

et al. 2015

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Establishing fast, simple, low-cost, and efficient sample preparation procedures to determine elements in foodstuffs is a relevant aspect for nutritional and health purposes. For this reason, the recently proposed closed-vessel conductively heated digestion system (CHDS) was evaluated for the digestion of milk powder, chocolate powder, and soluble coffee samples aiming for Ca, Cu, Fe, K, Mg, Mn, Na, and Zn determinations by high-resolution continuum source flame atomic absorption spectrometry (HR-CS FAAS) and Cd, Mo, and Se determinations by inductively coupled plasma mass spectrometry with tandem configuration (ICP-MS/MS). The accuracy was evaluated by analyzing two milk certified reference materials digested by the CHDS and a microwave oven for comparison. When using the CHDS, recoveries for the analytes varied from 91 to 104 %. For microwave digestions, recoveries within the 94-109 % intervals were obtained. The method was then applied to the samples. For comparative purposes, the analytes were also determined in the samples after microwave digestion, and the results between the two digestion systems showed no differences based on a paired t test at a 95 % confidence level. Similar analytical blanks were obtained because quartz digestion tubes were used in both digestion systems. The CHDS with quartz tubes is an interesting alternative for laboratories dedicated to large-scale routine analysis because volatile elements usually found in very low concentrations in food samples such as Cd and Se can also be determined.

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Section: Introductionmentioning

confidence: 99%

Determination of Ca, Cd, Cu, Fe, K, Mg, Mn, Mo, Na, Se, and Zn in Foodstuffs by Atomic Spectrometry After Sample Preparation Using a Low-Cost Closed-Vessel Conductively Heated Digestion System

et al. 2015

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“…In recent years, the CVG technique has expanded its scope to transition and noble metals following reaction with tetrahydroborate(III), such as Cu, Fe, Co, Zn, Mn, Au, Ag, Pt, and Pd. [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] However, the CVG efficiency of transition and noble metals is much lower compared with conventional hydrideforming elements, so great efforts have been made to improve the CVG efficiency of transition and noble metals in the past few years. Trace amounts of complexing agents were found to be helpful for improving the CVG efficiency of transition and noble metals, such as sodium diethyl-dithiocarbamate (DDTC) for Au, [21][22][23] 1,10-phenanthroline for Cu, 24 8-hydroxyquinoline (8-HQ) for Zn and Cd, 25 cetyltrimethylammonium bromide (CTAB)for Zn, 26 thiourea, cobalt ion and ascorbic acid for Cd.…”

Section: Introductionmentioning

confidence: 99%

Synergetic enhancement effect of room temperature ionic liquids and ammonium pyrrolidine dithiocarbamate on the chemical vapor generation of iron, cobalt and nickel in environmental and biological samples by atomic absorption spectrometric determination

Zeng

Zhou

Luo

2012

J. Anal. At. Spectrom.

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A new method based on chemical vapor generation (CVG) coupled with flame atomic absorption spectrometry (FAAS) was developed for the determination of iron, cobalt and nickel in environmental and biological samples. Room temperature ionic liquids (RTIL) combined with ammonium pyrroldinedithiocarbamate (APDC) were used to synergetically enhance the CVG of iron, cobalt and nickel. The addition of RTIL leads to 2.5, 3.2, 3.0 times improvement in the CVG efficiencies of Fe, Co and Ni, respectively. The efficiencies for the CVG of Fe, Co and Ni in the presence of RTIL and APDC were 42%, 61% and 54%, respectively. Volatile species of iron, cobalt and nickel were effectively generated through reduction of acidified analyte solutions with KBH 4 in the presence of 0.02% or 0.01% (m/v) APDC and 0.1% or 0.2% (m/v) 1-butyl-3-methylimidazolium hexafluorophosphate ([C 4 MIM]PF 6 ). Some parameters that influenced CVG and subsequent determination were evaluated in detail, such as the concentrations of RTIL, APDC, nitric acid (HNO 3 ) and KBH 4 ; flow rates of carrier gas, lengths of reaction tube and transfer tube, as well as interferences. Under optimized conditions, the detection limits (LODs) for Fe, Co and Ni were 18, 14 and 11 ng mL À1 , respectively. Relative standard deviations for five replicate determinations of the standard solution containing 500 ng mL À1 Fe, Co and Ni were 5.3%, 4.6% and 4.3%, respectively. The proposed method was successfully applied to the determination of iron, cobalt and nickel in certified environmental and biological reference materials with satisfactory results.

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“…Complexing agents such as 8-hydroxyquinoline(1-4), phenanthroline (1,5), diethyldithiocarbamate (DDTC) (6)(7)(8), thiourea (9), EDTA, ascorbic acid, ferron and L-cysteine (1) have been tested. Metals such as Pd (6,10) and also Co (2)(3)(4) and Ni (1,5,9,11) have been included as catalyzers of the reaction.…”

Section: Introductionmentioning

confidence: 99%

Influence of Surfactant and Ionic Liquid Media on Vapor Generation and Determination of Ag, Au, Cd, Cu, Ni, Sn, and Zn Using ICP-OES

et al. 2015

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Use of high resolution continuum source atomic absorption spectrometry as a detector for chemically generated noble and transition metal vapors

Cited by 23 publications

References 20 publications

Determination of Ca, Cd, Cu, Fe, K, Mg, Mn, Mo, Na, Se, and Zn in Foodstuffs by Atomic Spectrometry After Sample Preparation Using a Low-Cost Closed-Vessel Conductively Heated Digestion System

Determination of Ca, Cd, Cu, Fe, K, Mg, Mn, Mo, Na, Se, and Zn in Foodstuffs by Atomic Spectrometry After Sample Preparation Using a Low-Cost Closed-Vessel Conductively Heated Digestion System

Synergetic enhancement effect of room temperature ionic liquids and ammonium pyrrolidine dithiocarbamate on the chemical vapor generation of iron, cobalt and nickel in environmental and biological samples by atomic absorption spectrometric determination

Influence of Surfactant and Ionic Liquid Media on Vapor Generation and Determination of Ag, Au, Cd, Cu, Ni, Sn, and Zn Using ICP-OES

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