A simple inexpensive gas phase chemiluminescence analyzer for measuring trace levels of arsenic in drinking water

作者：Sengupta Mrinal K; Hossain Zafreen A; Ohira Shin Ichi; Dasgupta Purnendu K^*

来源：Environmental Pollution, 2010, 158(1): 252-257.

DOI：10.1016/j.envpol.2009.07.014

• Arsenic
• Gasphase chemiluminescence
• Tap water
• ICP-MS

An inexpensive sensitive gas-phase chemiluminescence (GPCL) based analyzer for arsenic is described; this device utilizes manual fluid dispensing operations to reduce size, weight and cost. The analyzer in its present form has a limit of detection (LOD, S/N = 3) of 1.0 mu g/L total inorganic As (peak heightbased, 3 mL sample). The system was used to measure low level arsenic in tap water samples from Texas and New Mexico and compared with results obtained by inductively coupled plasma-mass spectrometry (ICP-MS) as well as those from an automated GPCL analyzer. Good correlations were observed. Higher levels of As (50-500 mu g/L, As(III), As(V) and mixtures thereof) were spiked into local tap water; the recoveries ranged from 95 +/- 2% to 101 +/- 1%. A single instrument weighs less than 3 kg, consumes <25 W in power, can be incorporated in a briefcase and constructed for <$US $1000. It is easily usable in the field.

• 出版日期2010-1