On-Site Speciation Analysis of Inorganic Arsenic in Groundwater by Anodic Stripping Voltammetry

Ishiyama, Takashi; Takahashi, Motoyuki

doi:10.2965/jswe.32.93

Cited by 1 publication

(1 citation statement)

References 25 publications

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“…14 For on-site analysis of arsenic, several approaches have been reported such as electrochemical micro determinations, 15,16 colorimetric assay using nanoparticle formation, 17 and selective coprecipitation with BaSO4. 18 A popular conventional field analysis kit is based on separation of arsenic from possible interferences by generation of volatile arsine by reduction using metallic zinc or sodium borohydride (NaBH4) in an acidic medium.…”

Section: Introductionmentioning

confidence: 99%

High Sensitivity Arsenic Analyzer Based on Liquid-reagent-free Hydride Generation and Chemiluminescence Detection for On-site Water Analysis

et al. 2011

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In this work, a portable and reliable instrument based on manual hydride generation and subsequent ozone induced chemiluminescence analysis was developed and optimized for measurement of aqueous arsenic in drinking water. The aim was to develop a system for use in the field in villages in developing countries where water treatment systems have been installed. Consequently, it is beneficial that the system could be operated without reagent solutions or purified water. Arsenic trihydride (arsine) was generated by reaction with solid acid and solid borohydride, and then introduced to a chemiluminescence cell where the arsine was mixed with ozone to generate chemiluminescence. The measurement could be repeated with the throughput of 60 times h -1 , and the limit of detection was 0.4 μg L -1. The measurable arsenic concentration was up to 1 mg L -1 for 2 mL samples. The system was evaluated for analysis of natural water samples, and the obtained data agreed well with those from ICP-MS and sequential hydride generation flow analysis. We expect this small and inexpensive instrument will be used in developing countries.

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