Adsorption voltammetric determination of μg l-1 levels formaldehyde via in situ derivatization with Girard's reagent T

Wing Hong CHAN; Tian Yao Xie

doi:10.1016/S0003-2670(96)00460-6

Adsorption voltammetric determination of μg l^-1 levels formaldehyde via in situ derivatization with Girard's reagent T

Wing Hong CHAN^*, Tian Yao Xie

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

31 Citations (Scopus)

Abstract

The adsorptive voltammetric behaviour of formaldehyde (HCHO) after its in situ derivatization with trimethylaminoacetohydrazide chloride (Girard's reagent T) at a hanging mercury drop electrode (HMDE) was investigated in NH₃-NH₄Cl (pH 9.7) solution. The results showed that the adduct of HCHO with Girard's reagent T can be adsorbed on the surface of the HMDE, yielding one peak at -1280 mV (vs Ag/AgCl electrode), corresponding to the reduction of the adduct. The limit of detection was as low as 8.0 x 10^-8 mol dm^-3 (corresponding to 2.4 μg dm^-3 of HCHO). The linear range of the method was 2.0 x 10^-7 ~ 8.0 x 10^-6 mol dm^-3. The sensitivity of the method allows its application for the direct determination of HCHO in rain water samples.

Original language	English
Pages (from-to)	173-179
Number of pages	7
Journal	Analytica Chimica Acta
Volume	339
Issue number	1-2
DOIs	https://doi.org/10.1016/S0003-2670(96)00460-6
Publication status	Published - 28 Feb 1997

Scopus Subject Areas

Analytical Chemistry
Biochemistry
Environmental Chemistry
Spectroscopy

User-Defined Keywords

Formaldehyde
Girard's reagent T
Organic analysis
Voltammetry

Access to Document

10.1016/S0003-2670(96)00460-6

Cite this

@article{0b70484316584eb9af1716a8fe2b5809,

title = "Adsorption voltammetric determination of μg l-1 levels formaldehyde via in situ derivatization with Girard's reagent T",

abstract = "The adsorptive voltammetric behaviour of formaldehyde (HCHO) after its in situ derivatization with trimethylaminoacetohydrazide chloride (Girard's reagent T) at a hanging mercury drop electrode (HMDE) was investigated in NH3-NH4Cl (pH 9.7) solution. The results showed that the adduct of HCHO with Girard's reagent T can be adsorbed on the surface of the HMDE, yielding one peak at -1280 mV (vs Ag/AgCl electrode), corresponding to the reduction of the adduct. The limit of detection was as low as 8.0 x 10-8 mol dm-3 (corresponding to 2.4 μg dm-3 of HCHO). The linear range of the method was 2.0 x 10-7 ~ 8.0 x 10-6 mol dm-3. The sensitivity of the method allows its application for the direct determination of HCHO in rain water samples.",

keywords = "Formaldehyde, Girard's reagent T, Organic analysis, Voltammetry",

author = "CHAN, {Wing Hong} and Xie, {Tian Yao}",

note = "Funding Information: Financial supportf rom the ResearchG rant Council of the UGC (RGC-94/95-09) is gratefully acknowledged.",

year = "1997",

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doi = "10.1016/S0003-2670(96)00460-6",

language = "English",

volume = "339",

pages = "173--179",

journal = "Analytica Chimica Acta",

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TY - JOUR

T1 - Adsorption voltammetric determination of μg l-1 levels formaldehyde via in situ derivatization with Girard's reagent T

AU - CHAN, Wing Hong

AU - Xie, Tian Yao

N1 - Funding Information: Financial supportf rom the ResearchG rant Council of the UGC (RGC-94/95-09) is gratefully acknowledged.

PY - 1997/2/28

Y1 - 1997/2/28

N2 - The adsorptive voltammetric behaviour of formaldehyde (HCHO) after its in situ derivatization with trimethylaminoacetohydrazide chloride (Girard's reagent T) at a hanging mercury drop electrode (HMDE) was investigated in NH3-NH4Cl (pH 9.7) solution. The results showed that the adduct of HCHO with Girard's reagent T can be adsorbed on the surface of the HMDE, yielding one peak at -1280 mV (vs Ag/AgCl electrode), corresponding to the reduction of the adduct. The limit of detection was as low as 8.0 x 10-8 mol dm-3 (corresponding to 2.4 μg dm-3 of HCHO). The linear range of the method was 2.0 x 10-7 ~ 8.0 x 10-6 mol dm-3. The sensitivity of the method allows its application for the direct determination of HCHO in rain water samples.

AB - The adsorptive voltammetric behaviour of formaldehyde (HCHO) after its in situ derivatization with trimethylaminoacetohydrazide chloride (Girard's reagent T) at a hanging mercury drop electrode (HMDE) was investigated in NH3-NH4Cl (pH 9.7) solution. The results showed that the adduct of HCHO with Girard's reagent T can be adsorbed on the surface of the HMDE, yielding one peak at -1280 mV (vs Ag/AgCl electrode), corresponding to the reduction of the adduct. The limit of detection was as low as 8.0 x 10-8 mol dm-3 (corresponding to 2.4 μg dm-3 of HCHO). The linear range of the method was 2.0 x 10-7 ~ 8.0 x 10-6 mol dm-3. The sensitivity of the method allows its application for the direct determination of HCHO in rain water samples.

KW - Formaldehyde

KW - Girard's reagent T

KW - Organic analysis

KW - Voltammetry

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DO - 10.1016/S0003-2670(96)00460-6

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VL - 339

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EP - 179

JO - Analytica Chimica Acta

JF - Analytica Chimica Acta

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