Arsenic Speciation in Atmospheric Aerosols at The Geysers

Solomon, Paul A.; Altshuler, Samuel L.; Keller, Marilyn L.

doi:10.1080/1073161x.1993.10467159

Cited by 6 publications

(16 citation statements)

References 3 publications

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“…Again, no methylated arsenic species were considered in both studies. The authors indicated the effect of the matrix of PM on the extraction of the As species [121]. They found a recovery of 60% for As (III) and 120% for As(V).…”

Section: Sampling and Extraction For As Speciationmentioning

confidence: 99%

“…Other limited studies about inorganic As speciation were performed in the 1990's at a Geysers Geothermal area in California by Solomon et al [121], and by Talebi at the city of Isfahan (Iran) [122]. In the first case, PM was collected upon quartz filters and extracted with diluted HCl in a similar way as in [120], whereas in the second case quartz filters were employed and digested with H 2 SO 4 and HNO 3 for posterior analysis by HG-AAS.…”

Section: Sampling and Extraction For As Speciationmentioning

confidence: 99%

“…This method provided LOD of 20-25 ng for each As species, with an accuracy of 9-11% [120]. If expressed as concentration, according to [121], the LOD is 0.23 ng m -3 , with a similar accuracy of 12-13%.…”

mentioning

confidence: 97%

“…The speciation of inorganic As(III) and As(V) undertook by Rabano et al [120] and Solomon et al [121] in 1980's was based in the different response of inorganic As(III) and As(V) to HG, without chromatographic separation of the As species. As(III) can be converted into AsH 3 with a Zn slurry, and As(V) is reduced afterwards in the same sample with NaBH 4 .…”

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confidence: 99%

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Analytical approaches for arsenic determination in air: A critical review

Sánchez-Rodas

Campa

Alsioufi

2015

Analytica Chimica Acta

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This review describes the different steps involved in the determination of arsenic in air, considering the particulate matter (PM) and the gaseous phase. The review focuses on sampling, sample preparation and instrumental analytical techniques for both total arsenic determination and speciation analysis. The origin, concentration and legislation concerning arsenic in ambient air are also considered. The review intends to describe the procedures for sample collection of total suspended particles (TSP) or particles with a certain diameter expressed in microns (e.g. PM10 and PM2.5), or the collection of the gaseous phase containing gaseous arsenic species. Sample digestion of the collecting media for PM is

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Section: Sampling and Extraction For As Speciationmentioning

confidence: 99%

Section: Sampling and Extraction For As Speciationmentioning

confidence: 99%

mentioning

confidence: 97%

mentioning

confidence: 99%

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Analytical approaches for arsenic determination in air: A critical review

Sánchez-Rodas

Campa

Alsioufi

2015

Analytica Chimica Acta

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“…8,9 For the determination of the individual species of arsenic, several combinations of techniques (separation + element-selective detection) have been attempted, but high-performance liquid chromatography (HPLC) in conjunction with ICP-MS or hydride generation atomic uorescence spectrometry (HG-AFS) has emerged as one of the best combinations for monitoring purposes. [1][2][3]6,7,[10][11][12][13][14][15][16][17][18][19][20][21][22][23] Most arsenic analytical techniques require samples to be extracted or digested prior to instrumental analysis. This approach was used consistently in the majority of the literature reviewed when particulate matter was collected on lter media.…”

Section: Introductionmentioning

confidence: 99%

Speciation of inorganic arsenic in particulate matter by combining HPLC/ICP-MS and XANES analyses

Tirez

Vanhoof

Peters

et al. 2015

J. Anal. At. Spectrom.

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Inorganic arsenic species in ambient particulate matter (PM 10 and PM 2.5 ) have been determined in an urban area, in the vicinity of a metallurgical industrial plant. The developed high performance liquid chromatography inductively coupled plasma mass spectrometry (HPLC/ICP-MS) method allows monitoring of particulate As(III) and As(V)-species, with a limit of quantification of 0.34 ng m À3 As(III) and 0.23 ng m À3 As(V), respectively. Good agreement was obtained between the sum of the concentrations of As(III) and As(V) determined by HPLC/ICP-MS and the total As concentrations determined by XRF, indicating a complete extraction of the As species. During the measuring campaigns for PM 10 and PM 2.5 , a significant conversion (oxidation) up to 54% of exogenous spiked As(III) was observed. The total amount of the spiked As(III) was well-recovered (PM 10 and PM 2.5 on average 108% and 101%, respectively). The extraction of the filter in combination with the sampled air matrix is likely to induce the As(III) conversion. The average measured As concentration in PM 10 during a 40-day monitoring campaign (30 ng m À3 ) at a hot spot location is above the European target value of 6 ng m À3 . The measured As concentration in PM 2.5 was half the value of the measured concentration in PM 10 and no relative enrichment of total As was observed in either particulate matter fractions. However, in PM 10 , As(V) was the main component, while in PM 2.5 , As(III) was the dominant species. During the monitoring campaign, the fraction of particulate As(III) varied between 19 and 61% in PM 10 and a trend towards a higher fraction of As(III) with increasing concentration of total As was observed. XANES and XRD analyses were used for the identification of arsenic species in local PM sources and confirmed the presence of Ca 3 Sr 2 (AsO 4 ) 2.5 (PO 4 ) 0.5 (OH), As 2 O 3 and As 2 O 5 species.

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