Arsenic in groundwater of the Red River Floodplain, Vietnam: Some results of the Vietas project

Diederik Jan Postma; Flemming Larsen; Søren Jessen; Nguyen Thi Minh Hue; Mai Thanh Duc; Pham Hung Viet; Pham Quy Nhan

Arsenic in groundwater of the Red River Floodplain, Vietnam: Some results of the Vietas project

Diederik Jan Postma, Flemming Larsen, Søren Jessen, Nguyen Thi Minh Hue, Mai Thanh Duc, Pham Hung Viet, Pham Quy Nhan

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

Abstract

The mobilization of arsenic (As) to the groundwater was studied in a shallow Holocene aquifer on the Red River flood plain near Hanoi, Vietnam. Results show an anoxic aquifer featuring organic carbon decomposition with redox zonation dominated by the reduction of Fe-oxides and methanogenesis. The concentration of As increases over depth to a concentration of up to 550 μg/L. Most As is present as As(III) but some As(V) is always found. Arsenic correlates well with NH4, relating its release to organic matter decomposition and the source of As appears to be the Fe-oxides being reduced.

Original language	English
Title of host publication	Arsen i grundvand og drikkevand : ATV Møde
Place of Publication	Kgs. Lyngby
Publisher	ATV Jord og Grundvand
Publication date	2007
Pages	35-44
Publication status	Published - 2007
Event	Arsenic i grundvand og drikkevand - Helnan Marselis Hotel, Århus, Denmark Duration: 3 Oct 2007 → 3 Oct 2007

Seminar

Seminar	Arsenic i grundvand og drikkevand
Location	Helnan Marselis Hotel
Country/Territory	Denmark
City	Århus
Period	03/10/2007 → 03/10/2007

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@inproceedings{675ec765509d4afabbe13980c5545d90,

title = "Arsenic in groundwater of the Red River Floodplain, Vietnam: Some results of the Vietas project",

abstract = "The mobilization of arsenic (As) to the groundwater was studied in a shallow Holocene aquifer on the Red River flood plain near Hanoi, Vietnam. Results show an anoxic aquifer featuring organic carbon decomposition with redox zonation dominated by the reduction of Fe-oxides and methanogenesis. The concentration of As increases over depth to a concentration of up to 550 μg/L. Most As is present as As(III) but some As(V) is always found. Arsenic correlates well with NH4, relating its release to organic matter decomposition and the source of As appears to be the Fe-oxides being reduced.",

author = "Postma, {Diederik Jan} and Flemming Larsen and S{\o}ren Jessen and Hue, {Nguyen Thi Minh} and Duc, {Mai Thanh} and Viet, {Pham Hung} and Nhan, {Pham Quy}",

year = "2007",

language = "English",

pages = "35--44",

booktitle = "Arsen i grundvand og drikkevand",

publisher = "ATV Jord og Grundvand",

note = "Arsenic i grundvand og drikkevand ; Conference date: 03-10-2007 Through 03-10-2007",

}

TY - GEN

T1 - Arsenic in groundwater of the Red River Floodplain, Vietnam

T2 - Arsenic i grundvand og drikkevand

AU - Postma, Diederik Jan

AU - Larsen, Flemming

AU - Jessen, Søren

AU - Hue, Nguyen Thi Minh

AU - Duc, Mai Thanh

AU - Viet, Pham Hung

AU - Nhan, Pham Quy

PY - 2007

Y1 - 2007

N2 - The mobilization of arsenic (As) to the groundwater was studied in a shallow Holocene aquifer on the Red River flood plain near Hanoi, Vietnam. Results show an anoxic aquifer featuring organic carbon decomposition with redox zonation dominated by the reduction of Fe-oxides and methanogenesis. The concentration of As increases over depth to a concentration of up to 550 μg/L. Most As is present as As(III) but some As(V) is always found. Arsenic correlates well with NH4, relating its release to organic matter decomposition and the source of As appears to be the Fe-oxides being reduced.

AB - The mobilization of arsenic (As) to the groundwater was studied in a shallow Holocene aquifer on the Red River flood plain near Hanoi, Vietnam. Results show an anoxic aquifer featuring organic carbon decomposition with redox zonation dominated by the reduction of Fe-oxides and methanogenesis. The concentration of As increases over depth to a concentration of up to 550 μg/L. Most As is present as As(III) but some As(V) is always found. Arsenic correlates well with NH4, relating its release to organic matter decomposition and the source of As appears to be the Fe-oxides being reduced.

M3 - Article in proceedings

SP - 35

EP - 44

BT - Arsen i grundvand og drikkevand

PB - ATV Jord og Grundvand

CY - Kgs. Lyngby

Y2 - 3 October 2007 through 3 October 2007

ER -

Arsenic in groundwater of the Red River Floodplain, Vietnam: Some results of the Vietas project

Abstract

Seminar

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