caa a22 4500 463162323 CHVBK 20180406164751.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10311-007-0097-y doi (NATIONALLICENCE)springer-10.1007/s10311-007-0097-y A sensitive spectrophotometric method for the determination of arsenic in environmental samples [Elektronische Daten] [H. Revanasiddappa, B. Dayananda, T. Kumar] We developed a cost-effective and sensitive spectrophotometric method for the determination of arsenic at trace level using a new reagent, leuco malachite green. Here we show that, arsenic reacts with potassium iodate in acidic conditions to liberate iodine, and the liberated iodine selectively oxidizes leuco malachite green to malachite green dye. We studied the Beer's law at 617nm, which showed linearity over the concentration range 0.09-0.9μg ml−1 of arsenic. We show that the molar absorptivity, Sandell's sensitivity and detection limit of the method are 6.1×104 l mol−1 cm−1, 0.0012μg cm−2 and 0.025μg ml−1, respectively. We applied the developed method for the determination of arsenic in environmental samples. Springer-Verlag, 2007 Arsenic(III) nationallicence Leuco malachite green nationallicence Spectrophotometry nationallicence Determination nationallicence Revanasiddappa H. Department of Chemistry, University of Mysore, Manasagangothri, 570 006, Mysore, India aut Dayananda B. Department of Chemistry, University of Mysore, Manasagangothri, 570 006, Mysore, India aut Kumar T. Department of Chemistry, University of Mysore, Manasagangothri, 570 006, Mysore, India aut Environmental Chemistry Letters Springer-Verlag 5/3(2007-08-01), 151-155 1610-3653 5:3<151 2007 5 10311 https://doi.org/10.1007/s10311-007-0097-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10311-007-0097-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Revanasiddappa H. Department of Chemistry, University of Mysore, Manasagangothri, 570 006, Mysore, India aut NATIONALLICENCE 700 1- Dayananda B. Department of Chemistry, University of Mysore, Manasagangothri, 570 006, Mysore, India aut NATIONALLICENCE 700 1- Kumar T. Department of Chemistry, University of Mysore, Manasagangothri, 570 006, Mysore, India aut NATIONALLICENCE 773 0- Environmental Chemistry Letters Springer-Verlag 5/3(2007-08-01), 151-155 1610-3653 5:3<151 2007 5 10311 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer