Development of a robust technique for sampling volatile metal(loid)s in wetlands

Planer-Friedrich, Britta; Matschullat, Jörg; Merkel, Broder J.; Roewer, Gerhard; Volke, P.

doi:10.1007/s00216-002-1636-9

Cited by 8 publications

(9 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[55][56][57][58][59][60][61] A quantitative method, developed by Planer-Friedrich and co-workers, was validated both for recovery (80%) and stability of the trapped As (6 weeks). 54 The authors used a PTFE membrane for sampling the soil gases and a NaOCl solution for trapping the volatile As, however, this method is only quantitative and not species-specic. More recently, a method based on AgNO 3 chemotrapping was also successfully used for total As measurements in natural gas.…”

Section: Cryotrapping and Gc-icp-ms Or Gc-afsmentioning

confidence: 99%

“…SPME: Solid Phase Micro Extraction; GC: Gas Chromatography; MS: Mass Spectrometry; CT: Cryo Trap; ICP: Inductively Coupled Plasma; AFS: Atomic Fluorescence Spectroscopy; HPLC: High Performance Liquid Chromatography Chemotrapping and total/speciation analysis by HPLC-AFS or HPLC-ICP-MS Volatile As species can react with a range of liquid or solid phase chemicals. H 2 O 2 , 53 NaOCl,54,55 Hg(NO 3 ) 2 , 56,57 activated charcoal,58,59 KI, 8,59 HNO 3 ,…”

mentioning

confidence: 99%

See 1 more Smart Citation

Biovolatilisation: a poorly studied pathway of the arsenic biogeochemical cycle

Mestrot

Planer-Friedrich

Feldmann

2013

Environ. Sci.: Processes Impacts

Self Cite

View full text Add to dashboard Cite

It has been known for over a hundred years that microorganisms can produce volatile arsenic (As) species, termed "arsines". However, this topic has received relatively little attention compared to As behaviour in soils and biotransformation through the trophic level in the marine and terrestrial environment. We believe this is due to long-standing misconceptions regarding volatile As stability and transport as well as an absence, until recently, of appropriate sampling methods. First and foremost, an attempt is made to unify arsines' designations, notations and formulas, taking into account all the different terms used in the literature. Then, the stability of As volatile species is discussed and new analytical developments are explored. Further, the special cases of diffuse low-level emissions (e.g. soil and sediment biovolatilisation), and point sources with high-level emissions (geothermal environments, landfills, and natural gas) are comprehensively reviewed. In each case, future possible areas of research and unknown mechanisms are identified and their importance towards the global As biogeochemical cycle is explored. This review gathers new information regarding mechanisms, stability, transport and sampling of the very elusive arsines and shows that more research should be conducted on this important process.

show abstract

Section: Cryotrapping and Gc-icp-ms Or Gc-afsmentioning

confidence: 99%

mentioning

confidence: 99%

Biovolatilisation: a poorly studied pathway of the arsenic biogeochemical cycle

Mestrot

Planer-Friedrich

Feldmann

2013

Environ. Sci.: Processes Impacts

Self Cite

View full text Add to dashboard Cite

show abstract

“…The deduction of the original gaseous speciation for Se and S compounds is possible via the formation of specific transformation products and the gaseous As speciation may be qualified using existing techniques [23], [39]. To circumvent potential hazards during handling (nitric acid), the used quantities of acid can be kept small (<15 mL).…”

Section: Discussionmentioning

confidence: 99%

“…For this, between 0.1 and 1 mg of educts were dissolved in 10 mL 1% HNO 3 in the reaction vessel. After dissolution, the pH was adjusted to 0>pH>3 with dilute NaOH, depending on the targeted volatile As species (the formation of volatile methylated As compounds via hydride generation is greatly pH dependent [38], [39]). The solution was subsequently purged with N 2 for >20 minutes.…”

Section: Methodsmentioning

confidence: 99%

Quantification of Methylated Selenium, Sulfur, and Arsenic in the Environment

et al. 2014

View full text Add to dashboard Cite

Biomethylation and volatilization of trace elements may contribute to their redistribution in the environment. However, quantification of volatile, methylated species in the environment is complicated by a lack of straightforward and field-deployable air sampling methods that preserve element speciation. This paper presents a robust and versatile gas trapping method for the simultaneous preconcentration of volatile selenium (Se), sulfur (S), and arsenic (As) species. Using HPLC-HR-ICP-MS and ESI-MS/MS analyses, we demonstrate that volatile Se and S species efficiently transform into specific non-volatile compounds during trapping, which enables the deduction of the original gaseous speciation. With minor adaptations, the presented HPLC-HR-ICP-MS method also allows for the quantification of 13 non-volatile methylated species and oxyanions of Se, S, and As in natural waters. Application of these methods in a peatland indicated that, at the selected sites, fluxes varied between 190–210 ng Se·m−2·d−1, 90–270 ng As·m−2·d−1, and 4–14 µg S·m−2·d−1, and contained at least 70% methylated Se and S species. In the surface water, methylated species were particularly abundant for As (>50% of total As). Our results indicate that methylation plays a significant role in the biogeochemical cycles of these elements.

show abstract

“…German workers have developed an in situ sampler to collect volatile metal(loid)s in wetlands at the surface/air interface. 8 The gas/water phase separation is achieved by the use of a porous PTFE membrane and the collected species trapped and stabilised in a liquid sorbent trap containing a NaOCl solution. The system is run under slight vacuum and they minimized breakthrough and contamination issues by isolating the phase separation unit away from the trapping unit.…”

Section: Sampling and Sample Preparationmentioning

confidence: 99%