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We describe the development, optimization, and application of a novel method for the quantification of p-arsanilic acid (p-ASA), an organoarsenical that is widely used as an animal feed additive, at μgL −1 levels in surface water samples. The method is based on sequential injection–long pathlength absorbance spectrophotometry (SI–LPAS). This method incorporates the selective reactivity of...
A method to detect the presence and determine the concentration of mercury and arsenic in extracts of ancient papers, based on an approach which allows integration of solid-phase concentration of the target analytes and their detection, is proposed. Automation of the overall process (viz. swelling and conditioning of the sorbent, sample introduction for analytes retention, drying of the sorbent by...
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