A new device for formaldehyde and total aldehydes real-time monitoring

Sassine, Maria; Picquet‐Varrault, Bénédicte; Chiappini, Laura; Doussin, Jean‐François; George, Christian

doi:10.1007/s11356-013-2010-5

Cited by 6 publications

(18 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For EM of volatile solvents, such as FA, specific and dedicate equipment is also available. 98 Chromatography has significantly improved both EM and BM. Compared to classic immunometric or radiolabeling techniques, chromatography is faster and cheaper.…”

Section: Methods Of Analysismentioning

confidence: 99%

Chemical Risk in Hospital Settings: Overview on Monitoring Strategies and International Regulatory Aspects

Charlier

Coglianese

Rosa

et al. 2021

Journal of Public Health Research

View full text Add to dashboard Cite

Chemical risk in hospital settings is a growing concern that health professionals and supervisory authorities must deal with daily. Exposure to chemical risk is quite different depending on the hospital department involved and might origin from multiple sources, such as the use of sterilizing agents, disinfectants, detergents, solvents, heavy metals, dangerous drugs, and anesthetic gases. Improving prevention procedures and constantly monitoring the presence and level of potentially toxic substances, both in workers (biological monitoring) and in working environments (environmental monitoring), might significantly reduce the risk of exposure and contaminations. The purpose of this article is to present an overview on this subject, which includes the current international regulations, the chemical pollutants to which medical and paramedical personnel are mainly exposed, and the strategies developed to improve safety conditions for all healthcare workers.

show abstract

Section: Methods Of Analysismentioning

confidence: 99%

Chemical Risk in Hospital Settings: Overview on Monitoring Strategies and International Regulatory Aspects

Charlier

Coglianese

Rosa

et al. 2021

Journal of Public Health Research

View full text Add to dashboard Cite

show abstract

“…The measurements were made by automatic injection of 1 μL liquid sample. Finally, formaldehyde analysis was performed after derivatization using 2,4-dinitrophenylhydrazine in acid media and toluene 52,53 in a GC HP 7890 coupled to a mass spectrometer Saturn 2100D-Varian with column HP-5MS (0.25 mm × 30 m × 0.25 μm). The analysis was carried out in SIM mode for 79 and 210 m/z.…”

Section: Photocatalytic Reactionsmentioning

confidence: 99%

ETS‑10 Modified with CuxO Nanoparticles and Their Application for the Conversion of CO2 and Water into Oxygenates

Januario

Nogueira

Pastore

2018

J. Braz. Chem. Soc.

View full text Add to dashboard Cite

Photocatalytic reactions to convert CO 2 and H 2 O into solar fuels using only solar irradiation have been investigated in this work. For this purpose, titanosilicate ETS-10 was decorated with Cu 2 O and CuO nanoparticles and their properties were analyzed by different techniques. The final materials were applied in photoreduction of CO 2 in gas phase under 20 h of solar irradiation. In the final, the products oxygen, acetic acid, formaldehyde and methanol were detected by chromatographic techniques. Photoluminescence and electrochemical studies indicate the interaction between Cu x O nanoparticles and Ti-O-Ti-O on the surface of ETS-10, corroborating with the results obtained in the photocatalytic experiments. The best CO 2 photoconversion efficiencies into methanol were obtained when using ETS-10/Cu x O compared to pure ETS-10. Another important finding in this study is the fact that the reactions were carried out in the gas phase and no scavenge donors were employed.Keywords: CO 2 photoreduction, ETS-10 photocatalyst, oxygenated products, copper oxide, solar irradiation IntroductionIn the last 40 years, CO 2 emissions from fossil fuel combustion and industrial processes contributed with about 78% of the total greenhouse gases (GHG) emissions. 1 Different methods to consume CO 2 have been investigated, such as thermochemical conversion, 2-4 electrochemical reduction, [5][6][7] and photocatalytic reduction of CO 2 and water into hydrocarbons or solar fuels. [8][9][10] The use of solar energy has been highlighted as an alternative to obtain clean energy while simultaneously reducing the CO 2 concentration in the atmosphere. 11 Many chemicals are reported to be produced from water and CO 2 : formic acid, 12,13 acetic acid, 14,15 formaldehyde, 16 methanol [17][18][19] and methane. 20,21 Using a combination of metaloxides and co-catalysts we have already demonstrated the feasibility to produce both methane and methanol. 22 The first and principal step in CO 2 reduction is the oxidation of H 2 O molecules into oxygen and protons (equation 1), following the sequence described in equations 1-5. 23 Several works report the conversion to oxygenated chemicals by using sacrificial compounds, such as NaOH, 24 Titanosilicate ETS-10 (Engelhard titanium silicate) was first reported in the literature by Chapman and Roe 28 in 1990, however its structure was elucidated only in 1994 by Anderson et al. 29 using sophisticated techniques as highresolution transmission electron microscopy (HRTEM), nuclear magnetic resonance (NMR) and molecular simulations. The most interesting feature is that the ETS-10 contains a periodic structure of quantum semiconductor wires of [-O-Ti-O-Ti-] formed by TiO 6 octahedra isolated along the structure. The pores (ca. 0.67 nm diameter) run along [100] and [010] directions. [30][31][32][33] These properties make ETS-10 unique, because a short Ti-O bond length (1.71-2.11 Å) along the axial direction would not be possible outside of a zeolite framework. 34 This material absorbs ETS-10 Modified with Cu ...

show abstract

Section: Introductionmentioning

confidence: 99%

“…Other analytical methods listed in Table 1 are based on the transfer of gaseous formaldehyde into an aqueous solution, its almost immediate reaction with a specific derivative agent and its quantification by colorimetry [32][33][34][35] or fluorescence [13,[36][37][38][39][40]. Acetylacetone has been most often used for the quantification of formaldehyde [13,35,[37][38][39][40] because it has the least interferences, but other derivative agents have also been successfully tested [30,[32][33][34]36]. Studies carried out before 2013 used high liquid reagent flow rates, from 500 µL min −1 to 1300 µL min −1 [34,[36][37][38]41] The integration of microfluidics has enabled the flow rates involved to be reduced to 100 µL min −1 [30] or even better, i.e., down to 5-35 µL min −1 [13,35,39,40].…”

Section: Introductionmentioning

confidence: 99%

“…Acetylacetone has been most often used for the quantification of formaldehyde [13,35,[37][38][39][40] because it has the least interferences, but other derivative agents have also been successfully tested [30,[32][33][34]36]. Studies carried out before 2013 used high liquid reagent flow rates, from 500 µL min −1 to 1300 µL min −1 [34,[36][37][38]41] The integration of microfluidics has enabled the flow rates involved to be reduced to 100 µL min −1 [30] or even better, i.e., down to 5-35 µL min −1 [13,35,39,40]. The contribution of microfluidics has also made it possible to reduce very significantly the weight of the instruments from around 20 kg to only 4-6 kg.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On-Line Gaseous Formaldehyde Detection Based on a Closed-Microfluidic-Circuit Analysis

et al. 2020

View full text Add to dashboard Cite

This paper describes a compact microfluidic analytical device in a closed-circuit developed for the detection of low airborne formaldehyde levels. The detection is based on the passive trapping of gaseous formaldehyde through a microporous tube into the acetylacetone solution, the derivative reaction of formaldehyde with acetylacetone to form 3,5-Diacetyl-1,4-dihydrolutidine (DDL) and the detection of DDL by fluorescence. The recirculation mode of the analytical device means that the concentration measurement is carried out by quantification of the signal increase in the liquid mixture over time, the instantaneous signal increase rate being proportional to the surrounding gaseous formaldehyde concentration. The response of this novel microdevice is found to be linear in the range 0–278 µg m−3. The reagent volume needed is flexible and depends on the desired analytical resolution time and the concentration of gaseous formaldehyde in the environment. Indeed, if either the gaseous concentration of formaldehyde is high or the reagent volume is low, the fluorescence signal of this recirculating liquid solution will increase very rapidly. Consequently, the sensitivity simultaneously depends on both the reagent volume and the temporal resolution. Considering a reagent volume of 6 mL, the hourly and daily detection limits are 2 and 0.08 µg m−3, respectively, while the reagent autonomy is more than 4 days the airborne formaldehyde concentration does not exceed 50 µg m−3 as it is usually the case in domestic or public indoor environments.

show abstract

A new device for formaldehyde and total aldehydes real-time monitoring

Cited by 6 publications

References 66 publications

Chemical Risk in Hospital Settings: Overview on Monitoring Strategies and International Regulatory Aspects

Chemical Risk in Hospital Settings: Overview on Monitoring Strategies and International Regulatory Aspects

ETS‑10 Modified with CuxO Nanoparticles and Their Application for the Conversion of CO2 and Water into Oxygenates

On-Line Gaseous Formaldehyde Detection Based on a Closed-Microfluidic-Circuit Analysis

Contact Info

Product

Resources

About