A diffusive sampling device for the determination of formaldehyde in air using N-methyl-4-hydrazino-7-nitrobenzofurazan (MNBDH) as reagent

1999 ◽  
Vol 1 (1) ◽  
pp. 39-43 ◽  
Author(s):  
Andrea Büldt ◽  
Roger Lindahl ◽  
Olof Levin ◽  
Uwe Karst
Keyword(s):  
Diffusive Sampling ◽  
Sampling Device ◽  
Formaldehyde In Air

A diffusive sampling device for simultaneous determination of ozone and carbonyls

2011 ◽  
Vol 691 (1-2) ◽  
pp. 119-124 ◽  
Author(s):  
Shigehisa Uchiyama ◽  
Yohei Inaba ◽  
Naoki Kunugita
Keyword(s):  
Simultaneous Determination ◽  
Diffusive Sampling ◽  
Sampling Device

scholarly journals Validation and Application of a Derivatization-Free RP-HPLC-DAD Method for the Determination of Low Molecular Weight Salivary Metabolites

2020 ◽  
Vol 17 (17) ◽  
pp. 6158
Author(s):  
Beatrice Campanella ◽  
Tommaso Lomonaco ◽  
Edoardo Benedetti ◽  
Massimo Onor ◽  
Riccardo Nieri ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Low Cost ◽  
Reversed Phase ◽  
Low Molecular Weight ◽  
Single Individual ◽  
Sampling Device ◽  
Non Invasive ◽  
Minimal Sample ◽  
Whole Saliva

Saliva is an interesting, non-conventional, valuable diagnostic fluid. It can be collected using standardized sampling device; thus, its sampling is easy and non-invasive, it contains a variety of organic metabolites that reflect blood composition. The aim of this study was to validate a user-friendly method for the simultaneous determination of low molecular weight metabolites in saliva. We have optimized and validated a high throughput, direct, low-cost reversed phase liquid chromatographic method with diode array detection method without any pre- or post-column derivatization. We indexed salivary biomolecules in 35 whole non-stimulated saliva samples collected in 8 individuals in different days, including organic acids and amino acids and other carbonyl compounds. Among these, 16 whole saliva samples were collected by a single individual over three weeks before, during and after treatment with antibiotic in order to investigate the dynamics of metabolites. The concentrations of the metabolites were compared with the literature data. The multianalyte method here proposed requires a minimal sample handling and it is cost-effectiveness as it makes possible to analyze a high number of samples with basic instrumentation. The identification and quantitation of salivary metabolites may allow the definition of potential biomarkers for non-invasive “personal monitoring” during drug treatments, work out, or life habits over time.

scholarly journals Evaluation of the Diffusion Sampling Device for the Determination of Formaldehyde in Indoor Air.

2001 ◽  
Vol 11 (3) ◽  
pp. 511-516 ◽  
Author(s):  
Yoshika SEKINE ◽  
Michio BUTSUGAN ◽  
Hidetoshi USUKI ◽  
Takio KITAHARA
Keyword(s):  
Indoor Air ◽  
Sampling Device

Determination of ppb levels of formaldehyde in air

1992 ◽  
Vol 120 (3) ◽  
pp. 261-269 ◽  
Author(s):  
Åsmund Larsen ◽  
Nils Arne Jentoft ◽  
Tyge Greibrokk
Keyword(s):  
Formaldehyde In Air

Simultaneous determination of benzene and formaldehyde in air by cross cataluminescence on nano-3TiO2–2BiVO4

2014 ◽  
Vol 202 ◽  
pp. 721-726 ◽  
Author(s):  
Kaowen Zhou ◽  
Yanling Cheng ◽  
Hongwei Yang ◽  
Chunxiu Gu ◽  
Yu Xiao ◽  
...  
Keyword(s):  
Simultaneous Determination ◽  
Formaldehyde In Air

A new fluorimetric method for the determination of formaldehyde in air based on the liquid droplet sampling technique

The Analyst ◽  
2001 ◽  
Vol 126 (1) ◽  
pp. 104-108 ◽  
Author(s):  
Murad I. H. Helaleh ◽  
Momoko Kumemura ◽  
Shin-ichiro Fujii ◽  
Takashi Korenaga
Keyword(s):  
Liquid Droplet ◽  
Sampling Technique ◽  
Fluorimetric Method ◽  
Formaldehyde In Air

A Sensitive Formaldehyde Sensor Based on Cataluminescence Coupled with Thermal Desorption

2014 ◽  
Vol 670-671 ◽  
pp. 1163-1166 ◽  
Author(s):  
Hong Wei Yang ◽  
Zheng Xing ◽  
Kao Wen Zhou
Keyword(s):  
Detection Limit ◽  
Thermal Desorption ◽  
Flow Rate ◽  
Active Carbon ◽  
Room Temperature ◽  
High Selectivity ◽  
Formaldehyde In Air ◽  
Benzene Toluene ◽  
Versus Concentration

A sensitive cataluminescence-based detecting technology using nanosized Mo4V6Ti10O47 as a probe was proposed for determination of formaldehyde in air. Trace formaldehyde was firstly absorbed on active carbon at room temperature to concentrate, then desorbed at 75°C to determine. The method showed high selectivity to formaldehyde at wavelength of 575nm, satisfying activity at temperature of 260°C and good stability at carrier flow rate of 145 ml/min. The linear range of CTL intensity versus concentration of formaldehyde was 0.04~78 mg/m3, and the detection limit (3σ) was 0.02 mg/m3. The recovery of artificial sample was 96.8%-103.4% by this method. There was no response to CO, CO2, SO2, NH3, methanol, ethanol, benzene, toluene and xylenes.

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