Determination of sulfur anions by ion chromatography–postcolumn derivation and UV detection

Chen, Mei Lan; Ye, Ming Li; Zeng, Xue; Fan, Yun; Zhu, Yan

doi:10.1016/j.cclet.2009.05.003

Cited by 17 publications

(6 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, a number of analytical methods to detect formaldehyde have been reported, such as spectrophotometry [1], [9], [15], gas chromatography [16], high-performance liquid chromatography [17], ion chromatography [18], polarography [19], as well as fluorescence [20], [21]. However, these approaches required rigorous conditions and bulky instrumentation, and are unable to detect formaldehyde exposure information on a real-time basis.…”

mentioning

confidence: 99%

Thin-Film Sensors for Detection of Formaldehyde: A Review

Chen

Yuan

2015

IEEE Sensors J.

View full text Add to dashboard Cite

This paper reviewed the films used in formaldehyde gas sensing recently. They can be divided into three groups: 1) metal oxide semiconductor films; 2) polymer films; and 3) carbon nanotubes (CNTs) films. Detection limits of these three groups were 1 ppb, 1 ppm, and 20 ppb, respectively. In metal-oxide-semiconductor films, the sensitivity of ZnO conductimetric type sensor was down to 1 ppb with the detectable response of 7.4. Polyethyleneimine/TiO 2 was the most sensitive film with quartz crystal microbalance sensor in polymer films, which could detect 1-ppm formaldehyde with the response ( f ) of 0.8 Hz. Either multi-wall CNTs (MWCNTs) or single-walled CNTs, forming a CNTs film, had the higher sensitivity so far, and the MWCNTs-NH 2 interdigital electrodes sensor exhibited 1.73% relative resistance change to 20 ppb of formaldehyde. The further research will be, however, needed to deal with the situation of real scenario influences, such as temperature, humidity, and interferents.

show abstract

mentioning

confidence: 99%

Thin-Film Sensors for Detection of Formaldehyde: A Review

Chen

Yuan

2015

IEEE Sensors J.

View full text Add to dashboard Cite

show abstract

“…Hence, the development of gas sensors to detect the presence of formaldehyde gas is crucial to avoid harm and reduce the risks of developing health-threatening diseases. A number of methods to detect formaldehyde gas have been reported by several researchers, including spectrophotometry (Bunkoed et al , 2010; Lipari and Swarin, 1982; Li et al , 2009), gas chromatography (Bagheri et al , 2009), polarography (Zhang et al , 2002), ion chromatography (Chen et al , 2009) high-performance liquid chromatography (Pires Penteado et al , 2008) and fluorescence (Dong et al , 2016aa, 2016b; Motyka and Mikuska, 2004). However, these methods are incapable of detecting formaldehyde gas in real-time and require strict conditions and large instrumentations.…”

Section: Introductionmentioning

confidence: 99%

Formaldehyde gas sensing using metal oxide semiconductor: a brief review

Ishak

Johari²,

Ramli³

et al. 2022

View full text Add to dashboard Cite

Purpose This review aims to give an overview about zinc oxide (ZnO) based gas sensors and the role of doping in enhancing the gas sensing properties. Gas sensors based on ZnO thin film are preferred for sensing applications because of their modifiable surface morphology, very large surface-to-volume ratio and superior stability due to better crystallinity. The gas detection mechanism involves surface reaction, in which the adsorption of gas molecules on the ZnO thin film affects its conductivity and reduces its electrical properties. One way to enhance the gas sensing properties is by doping ZnO with other elements. A few of the common and previously used dopants include tin (Sn), nickel (Ni) and gallium (Ga). Design/methodology/approach In this brief review, previous works on doped-ZnO formaldehyde sensing devices are presented and discussed. Findings Most devices provided good sensing performance with low detection limits. The reported operating temperatures were within the range of 200̊C –400̊C. The performance of the gas sensors can be improved by modifying their nanostructures and/or adding dopants. Originality/value As of yet, a specific review on formaldehyde gas sensors based on ZnO metal semiconductors has not been done.

show abstract

“…Comparing to conventional detection approach, including colormetric assays (Luo et al, 2001 ), GC analyses (Bagheri et al, 2009 ; Chen et al, 2009 ), HPLC (Nash, 1953 ; Soman et al, 2008 ), fluorescence probes are considered as one of the most powerful tools due to their simplified operation, high selectivity and sensitivity, real-time detectability, and biocompatibility (Tang et al, 2015 ; Zhou et al, 2015 ; Bruemmer et al, 2017a ; Xu et al, 2017 ). To date, a number of fluorescent probes for FA visualization have been reported based on the fluorophores of silicon rhodol, 1,8-naphthalimide, resorufin and so forth (Brewer and Chang, 2015 ; Roth et al, 2015 ; He et al, 2016 ; Bruemmer et al, 2017b ; Liu et al, 2017 ; Xie et al, 2017a , b ; Bi et al, 2018 ; Zhou et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Imaging of Formaldehyde in Live Cells and Daphnia magna via Aza-Cope Reaction Utilizing Fluorescence Probe With Large Stokes Shifts

Yang

Fan

et al. 2018

Front. Chem.

View full text Add to dashboard Cite

Formaldehyde (FA), a highly reactive carbonyl species, plays significant role in physiological and pathological functions. However, elevated FA will lead to cognitive impairments, memory loss and various neurodegenerative diseases due to its potent DNA and protein cross-linking mechanisms. In this work, a fluorescence probe, BD-CHO, based on benz-2-oxa-1, 3- diazole (BD) skeleton, was designed and synthesized for detection of FA via Aza-Cope reaction with high selectivity and large Stokes shifts (about 118 nm). BD-CHO was successfully applied to monitor the changes FA level in living cells, and kidney tissues of mice. Importantly it was the first time that BD-CHO was used for visualizing exogenous FA changes in Daphnia magna through fluorescence microscopy, demonstrating its potential application for studies of biological processes associated with FA.

show abstract

Determination of sulfur anions by ion chromatography–postcolumn derivation and UV detection

Cited by 17 publications

References 10 publications

Thin-Film Sensors for Detection of Formaldehyde: A Review

Thin-Film Sensors for Detection of Formaldehyde: A Review

Formaldehyde gas sensing using metal oxide semiconductor: a brief review

Imaging of Formaldehyde in Live Cells and Daphnia magna via Aza-Cope Reaction Utilizing Fluorescence Probe With Large Stokes Shifts

Contact Info

Product

Resources

About