Determination of vanadium, molybdenum and chromium in soils, sediments and sludges by electrothermal atomic absorption spectrometry with slurry sample introduction

Campillo, Natalia; López-Garcı́a, Ignacio; Viñas, Pilar; Arnau-Jerez, Isabel; Hernández‐Córdoba, Manuel

doi:10.1039/b205699b

Cited by 29 publications

(12 citation statements)

References 25 publications

(21 reference statements)

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“…Moreover, HF displayed no benefit in decreasing the background signals (Fig. 4) unlike those reported with soil and sediments [15][16][17][18][19]. The background absorption tended to increase with increasing HF concentration in the plankton slurries such that for 5% v/v HF the analyte signal was underneath that of the background (Fig.…”

Section: Effect Of Extraction Mediumcontrasting

confidence: 42%

“…In the former, the pyrolysis step is omitted and the drying is performed at a relatively high temperature. This approach has been applied to the analysis of siliceous samples [12,[15][16][17][18][19], coal and fly ash [14] and biological samples [24,27]. The precision and accuracy were reported to be comparable to those obtained by conventional-heating approach [14,19,25], in which high temperature ashing is performed to destroy volatile matrix components in the presence of chemical modifiers.…”

Section: Introductionmentioning

confidence: 98%

“…Hydrofluoric acid (HF) has been also used as a suspension medium for refractory and siliceous samples [15][16][17][18][19]. Depending on analyte concentration and sample type, the concentration of slurries varies between 0.5 to 5% m/v.…”

Section: Introductionmentioning

confidence: 99%

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Slurry sampling for determination of lead in marine plankton by electrothermal atomic absorption spectrometry

Arslan

Tyson

2007

Microchemical Journal

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A slurry sampling method has been developed for the determination of Pb in marine plankton by ETAAS using a freshwater plankton certified reference material (CRM 414). Slurries were prepared in 1-3% m/v range with 1% v/v HNO 3 by ultrasonic agitation for 5 min. The effects of several chemical modifiers, including Ir(NO 3 ) 2 , Mg(NO 3 ) 2 , Pd(NO 3 ) 2 , Pd(NO 3 ) 2 +Mg(NO 3 ) 2 , and Mg(NO 3 ) 2 +NH 4 H 2 PO 4 , were investigated for the stabilization of Pb during thermal pretreatment. Lead in slurries was effectively stabilized up to 1000 °C with Ir, Pd and Pd +Mg modifiers among which Pd +Mg provided the best results with complete atomization at 1850 °C. Firings in the presence of Ir were, problematic due to ash formation inside the atomizer. Water, dilute HNO 3 and HF were examined as suspension medium. Dilute HNO 3 (1-2% v/v) proved to be advantageous over water as it afforded extraction of Pb from plankton almost quantitatively in 5 min agitation. Hydrofluoric acid was the least suitable medium. Increasing HF concentration up to 5% v/v resulted in inaccuracy and substantial background absorption. Fast-heating furnace method provided comparable accuracy and precision to that of conventional-heating in slurries of CRM 414. Detection limits and characteristic masses were, respectively, 0.49 μgL − 1 and 32 pg for the conventional method and 0.62 μgL − 1 and 37 pg for the fast-heating method. However, fast-heating approach suffered from distorted peaks at high temperatures and incomplete pyrolysis of matrix at lower temperatures. Analysis of marine plankton samples for Pb was performed by using the conventional furnace program. The results showed a high correlation with those obtained by solution ICP-MS. Differences were statistically insignificant within 95% confidence interval.

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Section: Effect Of Extraction Mediumcontrasting

confidence: 42%

Section: Introductionmentioning

confidence: 98%

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Slurry sampling for determination of lead in marine plankton by electrothermal atomic absorption spectrometry

Arslan

Tyson

2007

Microchemical Journal

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“…E-mail: orhana@taek.gov.tr reproducibility and for removal of silicon during the heating cycle. 21 The Zr, Ir and Zr + Ir coatings as permanent modifiers onto platform were not used, since atomization temperatures of Cr and Cu were higher than 2200˚C and loss of modifier mass occured above this temperature. 9,15 …”

Section: 7-9mentioning

confidence: 99%

Determination of Cadmium, Chromium, Copper and Lead in Sediments and Soil Samples by Electrothermal Atomic Absorption Spectrometry Using Zirconium Containing Chemical Modifiers

Acar

2006

ANAL. SCI.

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“…especially for solid samples. Many investigations that have been dedicated to the determination of vanadium in soils were mainly concentrating on the determination of total vanadium concentration [6][7][8]. However, to assess vanadium in plants and its impact on animals that consume plants, it is important to verify vanadium valency speciation [9,10].…”

Section: Introductionmentioning

confidence: 99%

Distribution of vanadium(V) species between soil and plants in the vicinity of vanadium mine

Panichev

Mandiwana

Moema

et al. 2006

Journal of Hazardous Materials

101

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Determination of vanadium, molybdenum and chromium in soils, sediments and sludges by electrothermal atomic absorption spectrometry with slurry sample introduction

Cited by 29 publications

References 25 publications

Slurry sampling for determination of lead in marine plankton by electrothermal atomic absorption spectrometry

Slurry sampling for determination of lead in marine plankton by electrothermal atomic absorption spectrometry

Determination of Cadmium, Chromium, Copper and Lead in Sediments and Soil Samples by Electrothermal Atomic Absorption Spectrometry Using Zirconium Containing Chemical Modifiers

Distribution of vanadium(V) species between soil and plants in the vicinity of vanadium mine

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