The Recent Advances and Applications of Arsenic Speciation in Water

Arsenic (As) is well known as a toxic element for human beings. The toxicity, mobility,and bioavailability of As compounds is highly dependent on its chemical forms and oxidation states. Speciation analysis of trace elements is an important issue in biomedical and environmental sciences. For the past few years many studies have been performed to determine As speciation in tap water, food chain and other environmental samples. This review provides the chemical speciation of As in water analysis in recent ten years, including the separation and preconcentration techniques, chromatographic techniques, detection techniques of inorganic As and organic As species (included As-containing chemical warfare agents). The advantages of various methods, insufficient, selectivity, sensitivity, limit of detection (DL) were reviewed.