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Determination of IO 3 − by flow injection analysis with 5-Br-PADAP and SCN− (1991)

Chen, Xingguo ; Zhao, Xinwei ; Kou, Zongyan ; [et al.]

Springer

Microchimica acta 103 (1991), S. 279-283

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ISSN: 1436-5073

Keywords: flow injection analysis ; 5-Br-PADAP ; iodate

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Notes: Abstract This paper reports that a red-violet triatomic ion association is formed by protonated 2-(5-bromo-2-pridylazo)-5-diethylamino-o-phenol, IO 3 − and SCN− in 1.2 mol/l H2SO4. A rapid spectrophotometric flow-injection method has been developed for the determination of IO 3 − based on the association reaction. Various parameters were optimized. The method is applied to kelp solution and satisfactory results were obtained. The limit of detection for IO 3 − is 6.0 × 10−7 mol/l with a sample throughput rate of 84 h−1.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01243264

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